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70
BU Score
Strong

renshuu - Japanese learning

4.9 ✍️ Editor
✍️ BU Analytics Review

renshuu - Japanese learning is an iOS app from Michael Hominick in the News category, currently rated 4.9★ across 1,245 ratings. Initial signal reads as largely positive sentiment, users highlighting consistency and feature depth.

Our BU Score puts it at 70Strong (healthy traction). For a News app, that means healthy traction.

Track changes month-over-month in the Performance section below — live snapshot history and revenue forecast included.

📊 Performance Tracking LIVE

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idle
0%
Rating
Reviews
Forecast Revenue / mo
Snapshots tracked
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since first record
Range:

💰 Forecast Revenue / mo

MODEL
Revenue forecast computed from BU's 234 trigger model on each snapshot. Calibrated against ground-truth from 58 verified-revenue apps.
🔬Forecast Breakdown — Why This Estimate?Top 11 of 11 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
Excellent rating (4.9★)METRIC
+$2,200
bugsREVIEW
−$1,800
5 starREVIEW
+$1,800
excellent appREVIEW
+$1,500
Low install base (1,245 ratings)METRIC
+$1,500
highly recommendREVIEW
+$1,400
slowREVIEW
−$1,200
annoying adsREVIEW
−$1,100
Established app (5y old)METRIC
+$800
Ad-supported / freemiumMETRIC
+$600
Single-language (English only)METRIC
−$400
METRIC = structural app data · REVIEW = mined from user reviews · ✓ VERIFIED = Stripe-verified anchor (TrustMRR)

📈 Reviews Growth

LIVE
Cumulative review count from first BU snapshot. Each point = a tracked update.
💚Sentiment Over Time↑ green = positive · ↓ red = negative
Jun 25
Jul 25
Aug 25
Sep 25
Oct 25
Nov 25
Dec 25
Jan 26
Feb 26
Mar 26
Apr 26
May 26

⭐ Rating Trend

LIVE
Average rating evolution. Updates with each new review batch.

🗓️ Snapshot Timeline

HISTORY
Each bar shows a tracked update and the metric delta from the previous snapshot.
App Specs
🔐 Own this app? Claim & verify MRR →
💾 64 MB🔞 4+📱 iOS 13.0+🔖 v1.15.22🔄 updated 2mo ago🌐 EN📂 News💰 Paid🚀 Launched 2021 (5y old)

📝 About this app

A cute, ad-free, and enjoyable learning experience is waiting for you in the Renshuu community! The free version is unlimited: there’s no timer before you are forced to pay!

- A path for every learning style and every goal -
Whether you are getting started with the alphabets or have been studying for years, jump in exactly where you belong! Don’t waste time going through what you already know.

Renshuu maintains learning paths for most textbooks, the JLPT, Kanji Kentei, and for those who just want to learn. You can also carve out your own path! Our community has over 10,000 user-made lessons for even more focused learning.

- Cute, relaxing, and fun -
Our mascot Kao-chan is here to let you enjoy learning Japanese, whether it’s through collectible coins every time you quiz, a character that evolves as you learn, manga pages that you unlock, or hundreds of hand-made illustrations.

Additionally, we have both single and multiplayer games to help you keep your learning and reviewing fresh!

- Personal service -
We are just a two-person company - and we don’t use chat bots. That means that every question you have gets an answer directly from us.

- Rich, in-depth materials -
> Vocabulary: over 15,000 native-recorded audio files, 17,000 hand-picked images, and 160,000 example sentences make understanding vocabulary a breeze. Our growing library of accent/pitch data can even help you with accent reduction.
> Kanji: 12,000+ kanji, with no limits on what you can study! Over 2,000 colorful mnemonics help you to understand and retain the meanings.
> Grammar: Over 800 different expressions, each complete with native-written model sentences, construction diagrams, audio, and over 7,500 hand-made quiz questions.
> Sentences: Thousands of sentences complete with audio, divided by theme and difficulty levels.

- A superior quiz system designed around Japanese -
Our SRS-for-Japanese system doesn’t treat Japanese materials like flashcards to be memorized, and breaks every item down into individual components so you can understand, and not just memorize. Mastery schedules keep you studying only what you need to, pushing weaker materials to the front for you to focus on.

Dozens of different question styles keep things fresh, while a flexible input system (multiple choice, typing, or writing) lets you answer the way that you want to.

- Customizable down to the last character -
Renshuu doesn’t believe that there is a single way of studying that everyone should adhere to. Our expansive settings and customizations let you adjust the learning environment to what works best for you.



End user license agreement can be viewed here: https://www.renshuu.org/eula

🆕 What's New · v1.15.22

Fixes the page going to the previous page when opening the menu.
Unfortunately, the tap-through issue (when tapping an item in the menu) is still present, and I am waiting for a fix from a library that renshuu uses. This only affects iOS 26.x users.

Profile & Insights

Everything we know — and don't — about this app and its company.

Identification

App name
renshuu - Japanese learning
Developer
Michael Hominick
Bundle ID
org.renshuu.renshuu
App Store URL
Open in App Store
Category
News
Content rating
4+
Languages
EN

Company

Website
Not found
Tagline
Today
Description
Find apps and games for iPhone, iPad, Mac, and more on the App Store.
Founded
Not found
HQ / Address
Not found
Employees
Not found
Logo
OG image

Revenue

Verified revenue / mo
Not found
AI revenue estimate / mo
Not found
AI annual estimate
Not found
ML model estimate / mo
$3.5K/mo
Top-grossing rank
Outside top 100 in US News
All-time revenue
Not found
Pricing
Not found

Founder

Name
Not found
X / Twitter
Not found
LinkedIn
Not found
GitHub
Not found
X followers
Not found
Public statements
Not found

Funding

Total raised
Not found
Last round
Not found
Investors
Not found
Crunchbase
Not found
AngelList
Not found

Press & Links

Articles found
Not found
Listed on
Not found
Blog
https://apps.apple.com/us/app/letterloop-group-newsletters/id6468623700
Press / News
Not found

Contacts & Socials

Socials
Not found
Email
Not found
Phone
Not found
Contact page
Not found
About page
https://apps.apple.com/us/iphone/story/id1759426883
📈Ratings growth1,245 ratings+125% lifetimeShow 3-year history estimate ▾May 2023Jan 2026May 2026
Tracked (37 weeks) Pre-tracking estimate (36 weeks) · model-based, ±5% noise · anchored to release date and current value
🌍Geographic ReachNot ranked
This app is currently outside the top 100 grossing in all 9 countries we monitor (US, UK, DE, FR, JP, CA, AU, BR, IN). Niche or new apps often launch this way — popularity rankings appear once daily revenue clears the regional threshold.
Profile is built from iTunes Lookup + developer site scrape + ML revenue model. Empty fields show "Not found" — additional sources (Crunchbase, X, IndieHackers, Acquire.com) coming.
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