Fluentico
Full offline language app | No internet required | Translator & conversation | Cloud AI when online
Fluentico is a production mobile language app whose main advantage is running everyday features without internet: phrases, flashcards, translator, two-language conversation, native TTS, tags, and starter packs — all on your phone in encrypted storage. Cloud AI optionally enhances translation and phrase generation when you connect; daily study never depends on a signal.
Learn more at fluentico.appThe Problem We Solve
Streaming-only language apps stop working the moment you lose signal. Fluentico keeps the full workflow on your device: not just a cached subset of phrases, but translator, simultaneous conversation, flashcards, TTS, and starter packs — with SQLCipher encryption and no plain-text cloud copies of your library.
How it works?
- Set up languages — choose your native and learning languages and sign in with your email to sync account entitlements and online features.
- Fill your library — import starter packs, translate on the fly, save lines from the translator and conversation screens, or generate phrases with Cloud AI when online.
- Organize & listen — use tags, favorites, phrase of the day, and native TTS to hear how lines sound before you drill them.
- Review on schedule — run flashcard sessions, mark OK/NOK, and track streak and plant progress on Home.
- Phrases live in a SQLCipher-encrypted local database. Cloud AI and phrase generation use the API only when you are connected — every other feature works fully offline.
Benefits for Mobile Learners
Fully offline — no internet
Translator, two-language conversation, flashcards, phrases, native TTS, tags, and starter packs all run on your phone without a connection.
Phrase-centric learning
Build collections for real situations instead of isolated vocabulary lists.
Smart review loops
OK/NOK flashcards, favorites, tag filters, and FSRS-style scheduling aimed at long-term retention.
Cloud AI when online
Cloud AI enhances translation and AI-assisted phrase generation when connected — optional extras, not required for daily use.
Translator & simultaneous two-language conversation
Unlike streaming-only apps, Fluentico keeps translator and conversation on your phone — fully offline. Type or dictate, translate between your native language and the language you are learning, and hear results with TTS.
Translator
Enter or dictate text in one language and get an immediate translation in the other. Hear the result with native TTS, copy or save useful lines into your phrase library — all without internet.
Simultaneous conversation
A two-way screen (native language ↔ learning language): each side speaks in their own language while the app recognizes speech (STT), translates, and reads the reply aloud (TTS). Fully offline on your device — ideal for travel, meetings, or practice with a partner.
Cloud AI
When you go online, Cloud AI enriches what already works offline. Signed-in users can request AI-generated phrase sets from the API — with JSON validation, server-side moderation, and monthly limits. Private generation prompts are not stored on the server; only metadata and a prompt hash are kept for audit and cache keys. Cloud AI translation is an optional upgrade over the built-in offline translator — daily study never depends on a connection.
Benefits for Privacy-Conscious Study
Fluentico is built for learners who want control over their content. Your phrase library stays encrypted on the phone; cloud phrase sync is planned as end-to-end encrypted blobs, not plain-text copies.
Encrypted local library
SQLCipher-backed storage for phrases you save, import from starter packs, or capture from translator and conversation.
Guarded Cloud AI generation
AI phrase sets via API with validation, moderation, and usage limits — prompts themselves are not stored on the server.
Multilingual UI
App interface in English, Polish, Spanish (including Latin American), German, French, and Dutch.
Production app on Android & iOS
Download Fluentico from Google Play and the App Store via fluentico.app.