🇮🇩 Indonesian for intermediate learners: the best resources

Free on desktop, Android and web; the iOS app is a one-off paid purchase that funds the project. The interface is dated and the options are overwhelming at first, but nothing beats it for retaining vocabulary over years. Most effective when you stop grinding premade decks and start mining sentences from things you actually read or watch.

Windah Anastasia has built the deepest free listening archive for intermediate Indonesian: over 230 episodes delivered 99% in Indonesian, on culture, daily life and language questions, and still running in 2026. The host tells you to start from episode one, and that is good advice — the early episodes are noticeably slower and more scaffolded. There are no transcripts, so it is a stretch below roughly B1.

BBC's Indonesian service writes in careful standard Indonesian and keeps articles short, which makes it the gentlest on-ramp to reading real news — easier than the domestic press while still fully authentic. Most stories carry a subtitled video, so you get reading and listening from the same item. The register is formal journalistic Indonesian, quite far from how people speak, so pair it with conversational material.

The Indonesian entry in the Easy Languages network: unscripted interviews filmed on the street, subtitled in Indonesian and English at the same time so you can follow speech far above your reading level. It was posting several times a week as of August 2026, which makes it the most active free source of natural Indonesian on video. The channel is still small, and the whole point is unedited fast speech — genuine beginners should treat it as listening exposure rather than a lesson.

Foreign Service Institute, Peace Corps and DLI materials — full textbooks plus hundreds of hours of audio — are public domain and hosted here for free across dozens of languages. The depth is extraordinary and the FSI Basic courses take diplomats to professional working proficiency, which no consumer app attempts. The recordings are from the 1960s–80s, the drills are relentless, and some vocabulary is dated (Cold War era), so they suit disciplined self-studiers, not casual learners.

Ghozali Saputro's series is explicitly for foreigners learning or maintaining Indonesian, with short episodes that stay comprehensible while still sounding like a native speaker talking. It sits nicely between beginner course audio and full-speed native podcasts. The feed stopped in early 2025, so treat it as a finished archive of about 70 episodes rather than an ongoing show.

An is a working conversational Indonesian tutor and her channel focuses on the phrases and sentence patterns that actually come up when you talk to people, delivered in slow, clear Indonesian with English support. It is a good bridge between scripted course audio and the real thing. The channel is small and posts irregularly (last uploads a few weeks apart in 2026), so it complements a structured course rather than replacing one.

Suci posts short, frequent videos built around ordinary situations — shopping, food, small talk — in simplified but natural Indonesian, and she was still uploading in August 2026. The steady drip of short clips suits daily listening practice better than hour-long lessons. It is a very small channel with no structured curriculum and fairly basic production, so use it for exposure alongside a proper course.

KBBI is the authoritative dictionary of Indonesian, maintained by the government language agency, and the online sixth edition is the reference to settle what a word really means, which register it belongs to, and whether it is standard at all. Because it is monolingual it only becomes usable around B1, but from there it beats every bilingual option. You need a free account to search the web version; offline mobile apps exist if you would rather not register.

Hani Calista is a certified teacher of Indonesian as a foreign language, and her 200-plus videos are the clearest free grammar explanations available for the language — prefixes and suffixes, me-/di- verbs, and the formal/informal split all get proper treatment. Explanations are in English, so it works from day one. Uploads have slowed to every couple of months, so treat it as a reference library rather than a series to follow.

The go-to place to ask why a sentence uses di- instead of me-, whether a phrase sounds natural, or which textbook is worth buying, with answers from native speakers and long-term learners. Search before posting — most beginner grammar questions have been answered several times already. Traffic is modest compared with the big language subreddits, so replies can take a day.

The default place to ask 'is X app worth it' or 'what should I do at B1' and get answers from people who have actually done it, plus per-language subreddits (r/Spanish, r/LearnJapanese, r/French) with far better resource lists. The wiki and FAQ head off most beginner questions. Expect strong ideological camps — comprehensible-input purists versus textbook people — so read a few threads before taking any single answer as settled.

SEAlang is a university-built lexicography project that pairs a serious Indonesian dictionary with a bitext corpus you can search for how a word is actually used in published writing. For anyone reading real Indonesian — news, literature, official documents — the corpus search answers questions no learner dictionary can. The interface is uncompromisingly academic and looks two decades old, and there is no audio or beginner material.

Sederet is the workhorse English–Indonesian dictionary most learners in Indonesia end up using: fast lookups in both directions, root-word handling that copes with Indonesian's affixes, and example sentences for common words. It is free and needs no account. The site is built for Indonesians learning English, so the surrounding tutorials point the other way and the page is cluttered with ads and unrelated tools.

A collaborative, Creative Commons-licensed corpus you can search for real usage of a word or download in bulk to build your own decks. It is the raw material behind Clozemaster and countless Anki decks rather than a study tool in itself. Sentences are contributed by volunteers, so quality and naturalness vary — prefer sentences from native contributors and cross-check anything surprising.

Over 100 language editions; the English edition alone has millions of entries covering hundreds of languages, with IPA, declension and conjugation tables, etymologies and usage notes that commercial apps usually paywall. The etymology sections are quietly one of the best vocabulary-retention tools available. Being crowd-sourced, coverage is uneven and rare entries can be wrong — cross-check anything unusual against a native-language dictionary.

Type a word or phrase and it plays back real YouTube clips of people saying it in context, across 25 languages plus sign languages, so you get natural intonation and regional variation rather than an isolated dictionary recording. Free, donation-supported, no account needed. Complements Forvo: Forvo for single words, YouGlish for phrases and prosody.

Modern assistants (ChatGPT, Claude, Gemini) will roleplay a scenario at your level, correct your writing with explanations, generate graded reading, and hold voice conversations — endlessly patient and available at 2am, which no tutor is. Free tiers are enough for text practice; voice modes generally need a subscription. The caveats are real: models are noticeably weaker and more error-prone in lower-resource languages, they tend to produce bland textbook register rather than how people actually speak, and they will not correct you unless you explicitly ask them to.

Covers 14 languages along an explicit CEFR path, and its best feature is the community exchange: you submit short writing or speaking exercises and real native speakers correct them, free of charge, in exchange for you correcting theirs. The free tier is limited to core lessons; Premium unlocks grammar, offline and the full path. A solid Babbel alternative if you specifically want writing practice with human feedback.

Built on Tatoeba sentences, it drills words in context by frequency band across 50+ languages and 170+ language pairings, with a genuinely generous free tier. It explicitly starts where beginner apps end, so it is the natural 'what now?' answer for someone who finished a Duolingo tree. Sentences are crowd-sourced and occasionally awkward or oddly specific, and it teaches nothing about grammar explicitly.

Mark Pentleton teaches a genuine student while you listen in, across French, Spanish, German, Italian, Chinese, Swedish, Portuguese, Japanese and Gaelic. The podcast seasons are free on any podcast app and are structured as a real curriculum rather than scattered episodes; the Academy sells premium lesson notes, video and bonus audio. Ideal commuting material for beginners through B1, and the Spanish and French series are the strongest.

A franchise of local producers filming unscripted street interviews, each episode subtitled in the target language and English, which is the closest free thing to hearing how people genuinely speak. All YouTube episodes are free; membership adds transcripts, vocabulary lists and exercises. Real-speed unscripted speech is hard early on — start with the slower 'Super Easy' episodes if you are below B1.

Around 6 million words recorded by native speakers across 400+ languages, usually with several accents per word so you can hear regional variation. Free to search on the site; the paid tiers are aimed at API users and bulk audio downloads. Indispensable for names, place names and anything a TTS voice would mangle — many learners wire it directly into Anki for card audio.

Built-in correction tools let partners fix your messages inline, and the social 'moments' feed gets you corrections from strangers without arranging a call. Free for the core exchange; VIP adds more translations and simultaneous target languages. The persistent caveat is that a fair share of users treat it as a dating app, and exchange partners are unreliable — it works best once you already have some output to correct.

Innovative Language's Indonesian arm is the largest organised body of dialogue-based audio lessons for the language, each with a line-by-line transcript, vocabulary list and cultural note. It is the most reliable way to get from zero to comfortable listening, and the free account plus the YouTube channel already cover a lot of ground. Caveats: the site pushes subscriptions hard, the lesson navigation is genuinely confusing, and the upper levels thin out fast — expect to leave it around B1/B2.

A Chrome extension that shows target-language and native subtitles simultaneously, lets you click any word for a definition, replay a line, and save phrases for review. The free tier already covers dual subs, dictionary lookups and the CEFR-graded video catalogue; Pro (about $6/month) adds machine translation, speech recognition and better AI lookups. It transforms passive Netflix time into study time, but you need enough of a base — roughly B1 — for subtitle mining to beat just watching.

Import podcasts, articles or ebooks, tap unknown words for definitions, and LingQ tracks your known-word count over time. The free tier caps how many saved words you can keep, so serious use means paying (~$13/month or less annually). The interface is clunky and the built-in SRS is weaker than Anki, but the reading-plus-audio workflow with 50+ languages is hard to replicate elsewhere.

The 'learn with locals' video clips are the distinguishing feature — you hear real people at real speed rather than TTS. Be aware that Memrise moved user-created community courses off the main app in 2024 onto a separate site, which gutted what many long-time users valued most, and the app has leaned hard into AI chat features since. Fine as a phrase-and-vocabulary app for major languages; if you came for the community decks, use Anki instead.

A browser extension plus web reader covering 100+ languages: click a word or drag across a phrase, get an inline translation, and it becomes a flashcard automatically. The free tier gives unlimited single-word translations but caps phrases and AI explanations at 10 a day; Premium is $6/month. Simpler and cheaper than LingQ or Migaku if all you want is frictionless reading of articles and ebooks.

A detailed staged roadmap for acquiring a language through massive comprehensible input — what to do at each stage, when to start output, how to mine sentences — with a free tracker, starter courses and an active Discord. The roadmap and community are free; vocabulary decks, advanced courses and coaching are paid. It is opinionated to the point of dogma about avoiding early output and translation, so take the framework and ignore the purity rules if they do not fit your goals.

A 501(c)(3) nonprofit: you shadow native audio, record your own version, and a real human coach returns feedback — 10 free submissions a month, unlimited for about $20/month, with full scholarships for anyone who needs one. Covers French, Spanish, Chinese, Japanese, Korean, German, Italian, Portuguese, Russian and English. It only fixes pronunciation and delivery, so it complements rather than replaces conversation practice.

Same idea as HelloTalk but with vetted profiles and a cleaner focus on actual voice and video calls, which makes it noticeably less spammy in practice. Free to use; Pro adds unlimited partner search and extra languages, and the app also sells paid tutors. Both apps live or die on finding one or two committed partners, so expect to message a lot of people before anything sticks.

Each course is ~100 short bilingual dialogues with native audio: you passively absorb for months, then start an 'active wave' translating back into the target language. Books run around €30 (e-courses ~€50) across 70+ languages, and the method is a long-standing favourite among polyglots for reaching real reading fluency. Caveats: many courses are only published from French, the humour is dated, and it demands daily discipline with no gamification to carry you.

Subscription-only after a handful of free intro lessons, typically $10–15/month with big discounts on annual plans. Lessons are short, dialogue-first and explain grammar properly, which makes it a much more serious beginner course than Duolingo. It covers only 13 languages and effectively stops around B1, so it is a stepping stone rather than a destination.

One of the first officially accredited Indonesian language schools in Bali, running since 2011 with campuses in Ubud and Sanur plus private online classes that follow the same syllabus. For expats and long-stay visitors it is the standard recommendation, and the teachers are trained in BIPA methodology rather than improvising. It is real tuition at real prices, and the fee chart is only visible after you dig into the site.

Over 70 languages, each a step-by-step beginner course written by an experienced teacher, and crucially all the audio is free to download from the companion site even if you find the book secondhand. Slightly more academic and grammar-forward than Teach Yourself, which some learners prefer. Like any book series the individual titles differ in quality; the less common languages are often the only decent course in existence.

You listen to and repeat thousands of native-recorded sentences on a spaced schedule, which builds fluent output patterns without explicit grammar study. It covers 60+ languages and keeps nine minority languages (Catalan, Welsh, Taiwanese, Kurdish and others) permanently free as a preservation effort. It is expensive at roughly $20–40/month, and the repetition is monotonous — most reviewers call it effective but overpriced, so try the 7-day trial first.

This is the reference grammar serious learners and linguists reach for: exhaustive treatment of the affix system, voice, and the differences between formal written Indonesian and everyday colloquial speech, with thousands of real examples. Nothing else explains me-/di-/ter- or the -kan/-i distinction with this much precision. It is a reference book, not a course — dry, expensive, and useless as a starting point, but the last word once you are past the basics.

One-on-one video lessons from roughly $5–30/hr depending on the language and the teacher's credentials. It is the single fastest way to get real speaking practice, and the reason most self-study plans stall is that they skip this step. Community tutors are cheap conversation partners; professional teachers are worth it if you want structure, homework and error correction.

A long-established school that maps its Indonesian programs to CEFR levels and issues progress reports, which matters if you need documented proficiency for a job or a visa rather than just conversational ability. Classes run one-to-one or in small groups, in Jakarta or online. Pricing is corporate-training territory, so it is overkill for a casual learner — the appeal is structure and accountability.

A streaming service where every show has clickable dual subtitles and saved words become flashcards, covering 15 languages with apps on phone, Roku and TV. It solves the 'what do I watch' problem for languages where Netflix's catalogue is thin. The library is much smaller than a mainstream streamer and it is subscription-only — if you already pay for Netflix, Language Reactor's free tier does most of the same job.

Lessons build outward from real conversations with colour-coded literal translations and cultural notes, and the catalogue includes endangered and indigenous languages nobody else covers. Retail pricing starts around $10/month, but a very large number of public libraries and universities give patrons free access — check yours before paying. Content depth per language is modest, so it suits travellers and early learners more than people pushing toward B2.

The heavyweight immersion toolkit: one-click sentence mining with audio, screenshot and definitions, plus its own SRS and known-word tracking, for 11 languages including Japanese, Korean, Mandarin and the major European ones. A 10-day free trial then a subscription (roughly $10/month). Overkill unless you are committed to a sentence-mining routine — if that describes you it saves hours a week, otherwise Language Reactor's free tier is enough.

Thirty-minute audio lessons force you to produce sentences out loud before you see anything written, which builds unusually good accent and recall. Subscriptions run about $15–21/month (all-access covers 50+ languages), and older courses are often available through public libraries. It is slow and vocabulary-light by design, so pair it with reading — but for commute or walking time it is the best use of otherwise dead hours.

100,000+ tutors across 120+ subjects, with a free replacement if your first tutor is a bad fit. The main structural difference from italki is that Preply pushes weekly lesson subscriptions and takes a large commission from tutors, which some learners consider a reason to prefer italki. Worth comparing side by side for your language — prices, availability and tutor quality differ per market rather than per platform.

Unlike most apps it is built around producing speech: you repeat, roleplay and converse with an AI tutor that gives pronunciation and phrasing feedback in real time. Covers Spanish, French, Korean, Japanese, Italian and Chinese for English speakers, with a 7-day trial then a subscription (roughly $20/month or $99/yr). Good for overcoming the fear of speaking before your first human lesson, but an AI will not push back or drift off-script the way a real conversation partner does.

A self-study course of dialogue lessons recorded with speakers from Jakarta, Yogyakarta, Bali and Surabaya, deliberately teaching the colloquial Indonesian people actually use rather than the formal register textbooks lead with. The $97 lifetime price with no subscription is unusual and fair if you finish it. Be aware that most of the glowing reviews online come from sites affiliated with the product, and there is little free sample material, so judge it from the demo lessons before paying.

The 'Complete' books are proper structured courses with dialogues, graded exercises and downloadable audio, and the range covers languages no app touches. Quality varies noticeably by title and author, so check reviews for your specific language before buying rather than trusting the series name. Their graded readers and 'Script Hacking' alphabet guides are also worth knowing about for non-Latin scripts.