Fluency Gym FAQ: Pricing, Languages, Method and Data
Updated 2026-11-03 · Ellen Zhang Yarong
Everything below is answered in plain language. If something is missing, the fastest route is the in-app feedback box — replies come from the people who build it.
Product and method
What does the app do?
A sentence-level recall trainer for Spanish, German, French and English. You paste a text, it is parsed against CEFR levels, and you practise producing the sentences you could not say.
Is the app free?
There is a free tier that covers daily workouts. Paid plans add unlimited parsing and longer sessions.
How is this different from a flashcard app?
Flashcards test a word or fact. The app tests whole sentences, which is the unit conversation actually demands.
Does it teach grammar?
Indirectly. Every sentence you practise carries a structure, and the app shows which ones you keep failing, so grammar gaps surface from production rather than from a rule list.
Which languages are supported?
Spanish, German, French and English at launch. English is aimed at non-native professionals.
How much time per day do I need?
There is no required daily duration or guaranteed timeline. A short, repeatable practice session may be easier to sustain than one long weekly session; adjust it to your schedule and goals.
How long until I can hold a conversation?
There is no reliable universal timeline. It depends on your starting point, the language, prior experience, the amount and kind of practice, and opportunities to use the language with others.
Why can I understand but not speak?
Recognition and production are separate memory tasks. Comprehension trains one; speaking requires retrieving with no prompt.
Do I need a conversation partner?
Not at the start. Self-recording and cued production build the base. A partner is most useful once you can produce a sentence on demand.
What is active recall?
Producing an answer from memory before looking at it. The retrieval effort is what strengthens the memory.
What is the CEFR?
A six-level scale from the Council of Europe describing what a learner can do, from A1 to C2.
How many words do I need per CEFR level?
The CEFR does not set word counts. One study of English learners mapped approximate ranges to exam levels using a test capped at the 5,000 most frequent words; those figures are study-specific estimates, not required vocabulary quotas (Milton, 2010).
Is my text uploaded and stored?
Text is parsed to build your workout. Account holders can delete their history at any time from settings.
Can I use it on my phone?
Yes. The workouts are designed for short mobile sessions, and progress syncs across devices.
Does it replace a course or a tutor?
No. It replaces the rereading you do between sessions, which is where most learners lose the most time.
What if I already use Anki?
Keep it for vocabulary volume, and use the app for sentence production. They train different things.
How do you decide what is B1 versus B2?
Word frequency, sentence structure and grammatical complexity are scored against published CEFR descriptors and frequency lists. The classification is a guide, not an official placement test.
Can I paste my own articles?
Yes — any text in a supported language. That is the intended workflow: whatever you were going to read anyway becomes a workout.
Do you offer refunds?
Yes, within 14 days of a paid subscription, no questions asked.
How do I cancel?
From account settings in one click. Access continues until the end of the paid period.
Still deciding?
The honest test is one session: paste a paragraph you found hard, do the workout, and see whether you can produce the sentences afterwards. Start here.
The recommendations here are starting points, not promises of a particular level or result. Progress depends on your starting point, the language, how consistently you practise, and whether you also use the language with other people. The CEFR describes what learners can do; it does not prescribe one schedule that works for everyone.
If that workflow does not match your current goal, use a different tool for that goal. A flashcard deck can be a better fit for a large vocabulary list; a course can provide a structured introduction; a tutor or conversation partner can give you interactive feedback. A recall workout is most useful when you have material you understand at least partly but cannot yet produce reliably.
Related reading
- What Is Active Recall (and Why It Beats Rereading) — A plain definition, the evidence behind it, three ways to do it properly, and the mistakes that turn it back into passive study.
- How Many Words Do You Need for Each CEFR Level? — The honest numbers: what vocabulary size research actually maps to A1–C2, why the ranges are wide, and how to estimate your own.
Sources
- Council of Europe. Common European Framework of Reference for Languages: Learning, teaching, assessment.
- Milton, J. (2010). The measurement of vocabulary size to differentiate learners' CEFR levels. EUROSLA Monographs, 211–232.
- Dunlosky, J., et al. (2013). Improving students' learning with effective learning techniques. Psychological Science in the Public Interest, 14(1), 4–58.