Free to learn. Subscribe for the advanced features.
There is no cap on how many words you learn and no trial countdown. A subscription unlocks the advanced features and lifts the usage limits a free account has. Start free in your browser, and upgrade inside the web app whenever you're ready.
Start free in your browser →Works on iPhone, iPad, Android, and desktop. Nothing to download.
Learn as many words as you want, for as long as you want.
Anyone building vocabulary who is not ready to pay.
Start freeEverything in Free, plus the advanced features. Cancel anytime.
Short test-prep windows (TOEFL, IELTS, GRE, SAT cycles).
Subscribe in the web appEverything in Free, plus the advanced features. Best per-month value.
Long-term language learners.
Subscribe in the web appEverything in Free, plus the advanced features. No renewals.
Learners who would rather not manage a subscription.
Get Lifetime in the web appThe exact price is shown in the web app before you pay. Using the Android app? Get it on Google Play and subscribe there instead.
Free vs. subscription
Learn as many words as you want, for as long as you want. There is no cap on how many words you study and no trial countdown that locks the app. Some features carry a usage limit.
Everything in Free, plus the advanced features unlocked and the free-account usage limits lifted. Which features need a subscription is marked in the app.
What Rhythm Word does
- A word plan built around your goal: IELTS, TOEFL, an English interview, or one you write
- Production checks every session: speaking, writing, and scenario dialogue
- AI-generated context sentences, never repeated
- FSRS-4.5 spaced repetition with 90% target retention
- All 12 preset learning goals + custom goals
- All 6 review engines: card swipe, spelling, pronunciation, fill-in-the-blank, matching, rapid fire
- Article generation from your reviewed words
- Chrome extension for desktop
- All 6 target languages: English, Spanish, French, German, Japanese, Korean
- All 11 UI languages
Billing
- Where you pay
- Inside the web app, through Stripe's secure checkout. If you use the Android app from Google Play, you can subscribe through Google Play instead.
- Payment methods
- Credit and debit cards. Alipay and WeChat Pay work too; paid that way, Monthly and Yearly are one-time passes that don't renew.
- Price
- Shown in the web app and on the checkout page before you pay. Google Play shows its own price in your local currency.
- Renewal
- Monthly and Yearly card subscriptions renew automatically. Cancel anytime before the renewal date from your profile in the web app, or from your Google Play subscriptions if you subscribed there. Lifetime is a single payment.
- Refunds
- For web purchases, email support@rhythmword.com. Google Play purchases follow Google Play's refund policy.
- Free tier
- Permanent. Learning words is free with no cap and no expiry; a subscription is only needed for the advanced features.
For AI agents
A machine-readable pricing manifest lives at /pricing.md. Full product documentation: /llms-full.txt.