FluencyTool
FluencyTool reviews
What learners say about the Japanese speaking practice app in their Google Play and App Store reviews. Quotes are copied from the stores with the reviewer's first name and initial, the stars they gave, and the month.
The store rating today
Written reviews: 31 on Google Play (Play Console review export, newest 30 October 2026) and 2 on the App Store, one in Vietnamese and one in French.
On the shadowing loop
Within about 10 minutes of using this and I'm convinced it's the best app for shadowing Japanese to improve your speaking ability. Haven't found anything that is remotely close.
Developer was super helpful and quick to respond to my email requesting support. Best app I've found for shadowing Japanese.
If you are trying to build pronunciation fluency but don't want to have to mine sentences forever, this app is perfect. Real feedback on pronunciation errors, ability to shadow and listen back, built in SRS, now I'm able to spend more time actually practicing instead of looking up things to shadow.
Great and simple app for practising Japanese speaking. Listen to each phrase and repeat it, and thanks to the text-to-speech function, the app checks that the pronunciation is correct.
Two reviewers above describe the score as pronunciation feedback. Strictly, it is a speech-to-text check of the words you said; what the score measures, and what it does not explains the difference.
On kanji and vocabulary
I really enjoy this app a lot and I cannot believe it is free. TIP: If you hold your finger down on the Kanji, it will explain each one to you individually.
The app is great fun to play. And it helps me a lot in Japanese learning. Especially recommended for word memory.
On support and fixes
Developer quickly responded and worked on fixing an issue, I appreciate the effort and changed to 5 stars. There are other minor issues but I will keep using the app, it's decent speech practice for someone like myself that doesn't have any real native speakers to practice with.
The app is still rough around the edges with many features in beta, but overall the core tool works well to help practice your speaking fluency while self-studying.
What reviewers asked for, and what changed
- A way to pay to remove ads (Brandon W., February 2025; Bensterz D., August 2025). FluencyTool now has a single one-time purchase that removes the ads. There is no subscription.
- More help with kanji (Tommy L., November 2025, on the long-press lookup). Kanji writing arrived in 3.0.104, and the Kanji Tower writing course for the 1,026 school kanji left beta in 3.0.105; see the FluencyTool updates.
- Practice without a connection (Trent, October 2024). Still partly open: flashcard reviews and the vocabulary games work offline, but Echo Fluency needs a connection for the sentence audio and the speech-to-text check.
- Using your own sentences (a June 2024 review). You can build custom flashcard decks with your own words, readings, definitions and examples; shadowing still uses the app's graded sentences.
How to leave a review
On Android, open FluencyTool on Google Play, scroll to Rate this app and choose your stars. On iPhone, open FluencyTool on the App Store, go to Ratings and Reviews and tap Write a Review. In the app, Settings has a Leave a review row. If something is broken, an email to fluencytool@my-senpai.com reaches the developer directly, and several reviewers above were answered that way.
Try it and judge for yourself
Free on Android and iPhone, with one optional purchase to remove ads. No account needed.