# Abacus Lesson -ADD and SUB- — user reviews > 56 indexed App Store user reviews of Abacus Lesson by Hirokazu Komatsu, rated 4.90/5 from 780 ratings. - Source: https://appshunter.io/ios/app/abacus-lesson-add-and-sub/id1526785916/reviews - App overview in markdown: https://appshunter.io/ios/app/abacus-lesson-add-and-sub/id1526785916.md - Rating breakdown: 5★ 712 · 4★ 50 · 3★ 11 · 2★ 1 · 1★ 6 ## What do users think of Abacus Lesson? Overall sentiment: positive **Pros** - 👍 Beginner-friendly and easy to use - 🚀 Quick to learn basic concepts - 📚 Clear and simple explanations - 🎯 Effective teaching methodology - 💰 Free with no ads - 🎮 Fun and engaging learning experience - 🔊 Good audio/visual feedback - 📱 Works well on mobile devices - ✨ Helps with arithmetic skills **Cons** - 🌐 Poor English translation quality - 📖 Lessons sometimes hard to read - ❌ Cannot skip levels - ⚡ Difficulty progression too steep - 🐛 App closes accidentally on iPhone when swiping - 📝 Confusing problem presentation format - 🔤 Misspelled words in instructions - 🎓 Limited long-term learning value **Commonly reported bugs** - Accidental app closure on iPhone during bead swiping - Error in lesson 3 addition summary - Sloppy English translation causing confusion - Lessons difficult to read visually **Most requested features** - Add Chinese Abacus (Suanpan) option - Landscape view support - Level skip functionality - Better English translation/editing - Clearer problem presentation with equation format - Improved lesson readability ## Newest reviews (16 of 56) ### 5/5 — Easy to use! *2025-12-04, version 3.1.9* It is beginner friendly. Hopefully I’ll be able to compete in mental math like those kids you see on TikTok doing abacus with their hands! Haha ### 5/5 — わかりやすい *2025-11-10* そろばんに触れず大人になりました。読み方もわからなかったので、レッスンごとに読み方、計算の仕方を教えてくれ、演習や昇級テストがありやり方を覚えていけそうです。 小学生の頃にも周りの経験者の人から教えてもらおうとしましたが、当時自分の理解力がなかったのもあり全く身に付かなかったので今から足し算引き算だけでも暗算できるようになりたいと思います ### 5/5 — Perfectaaaaa *2025-10-30, version 3.1.9* Esta app es hermosa. Sin anuncios molestos y bien práctica para aprender. Es preciosaaaaa. La recomiendo 100%. ### 5/5 — so very helpful!!! *2025-10-11, version 3.1.9* made learning the abacus very easy :-) ### 5/5 — Learning a new skill *2025-09-30, version 3.1.9* Pretty good app. I have a book that came with the Abacus but it doesn’t help a much as the app so I’m loving the app. ### 5/5 — So far so good *2025-08-21, version 3.1.9* Just getting started, but already understanding the basic concept of the abacus. Really fun to learn! ### 5/5 — 初めてでも。 *2025-06-25* 分かりやすくてすぐにマスターできました❗️ ### 5/5 — Good *2025-06-19, version 3.1.9* It's a good app underrated helps a lot ### 5/5 — Memories *2025-04-03, version 3.1.9* Nostalgia. I used to think this was a game. ### 5/5 — Wonderful *2025-02-17* Just started. Wonderful. ### 5/5 — Loving the app so far! *2025-01-26, version 3.1.9* I honestly think this is such a great app. I’ve always wanted to be quick in arithmetic and one day I saw a video of kids being able to add/subtract large number within seconds and immediately knew that I wanted to learn this method. When I stumbled across this app I thought it was the perfect opportunity and I’m really enjoy it so far. Thank you to the creator of this app!!!! ### 5/5 — Awesome *2025-01-09, version 3.1.9* Teaches well, thank you ### 5/5 — Suanpan *2025-01-09* Great app! Please add the Chinese Abacus 🙏 ### 5/5 — 楽しい *2024-12-26* よく学べるから良いね ### 5/5 — 使いやすい‼︎このアプリ‼︎‼︎ *2024-12-21* 今ちょうど学校でそろばんをやっているからすごくありがたいです！ ### 5/5 — Easy to use *2024-12-10, version 3.1.9* Great app for beginners. Break own how to use an abacus quite nicely. ## Most critical reviews (10 lowest-rated) ### 3/5 — Pretty decent for learning quickly *2026-01-24, version 3.1.9* I learned how to represent numbers on the soroban, add, subtract, 5 complements, and 10 complements very quickly. That was fun! But this app has a lot of issues. 1. The lessons are somewhat hard to read. 2. The English translation is really sloppy and confusing at times. 3. When teaching a new concept (e.g., double digit addition), instead of starting with a simple problem with two numbers, they immediately start you with adding 5 two digit numbers together at once. It's harder to learn from your mistakes this way bc a single mistake will mess up the entire calculation. 4. On iphone, I accidentally close the app when swiping the beads. This is more of an annoyance than anything. Overall, a great app to get started, but I wouldn't recommend it long term. ### 3/5 — amazing *2025-10-02, version 3.1.9* this is the first app that is clear with lessons and i recommend this to all my friends who struggle with addition and subtraction. i love the girl who recommended this on tiktok. anyways this is a REAL review #noclickbait. this is amazing thanks ### 3/5 — 楽しいが… *2024-08-04* iPhoneでやっていると、ホーム画面に戻されてしまうことが多々あり、それがストレスです。指2本使いたくてもアプリが閉じてしまう。 ### 3/5 — たのしいけど *2024-05-25* たのしいけど、、iPhoneは下から上にスライドするとホーム画面に戻ってしまうから、何度も誤作動する。もうちょっとそろばんを上にしてほしい。 ### 4/5 — Decent *2026-07-03, version 3.1.9* In the lessons, the explanations don’t fully make sense, causing me to have to review it multiple times before fully understanding ### 4/5 — Taught me things *2025-06-06, version 3.1.9* Pretty good! I’d rather have an upsell than ads though ### 4/5 — 答え合わせを随時して欲しい *2024-09-12* 最後にまとめて答え合わせではなくて、そ問題を解く度に答えがわかりたい。 最後に間違えていたことがわかるよりも、その時に直したい。 ### 4/5 — 超初心者です *2024-09-09* 大昔、NHKラジオ講座でそろばんがあったので、桁の少ない足し算と引き算までやりました。あまりにも算数が苦手で再チャレンジです。そろばんにも流派があるんでしょうか？なんか指が勝手に動くのですが、説明文の順番と違ってて混乱してます。今はレッスン6ですが、説明では10が出てくるのですが10は使わずに頭では5までしか使わず計算できてる気がしてます。？なぜでしょう？ ### 4/5 — I found 1 error *2024-04-06* Statement you put in lesson 3: “When you can not add a number, subtract a 5 bead and add it’s friend.” Correct statement: “When you can not add a number, add 5 bead and subtract it’s friend.” ### 4/5 — Great learning tool *2023-01-10, version 3.1.0* Just needs a good English editor. ## Most praised reviews (10 highest-rated) ### 5/5 — Abacus lesson is the best for learning Abacus *2026-07-10, version 3.1.9* Thanks to this game I’m now into abacus! ### 5/5 — Amazing *2026-06-30, version 3.1.9* I never thought I’d learn how to do this! This is awesome ### 5/5 — そろばんすぎる *2026-04-01* だめなところがない。そろばんについて何も知らなくても出来るようになった！ ### 5/5 — めっちゃ楽しい！ *2026-03-04* 広告もなくて、とっても快適です！徐々に慣れて､クラスではもうほぼそろばんの先生になっちゃいました笑笑しかも、たくさん練習ができて､とっても楽しいです！ ### 5/5 — 妹の宿題でそろばんが必要だったので急遽このアプリを入れました。 *2026-02-20* 簡単にできるし、説明があってわかりやすいです。小学生のころの懐かしさを思い出します。 順番に教えてくれるので、初めてそろばんをした人は理解しやすいのではないかと思います。ただ、昇級テストに受からないと次の段階に進めないので、飛び級ができません。さっさと進めたい人はめんどくさいと思うかも。 問題を選ぶ画面（ホーム画面）では自由にそろばんをいじれるので、自分の解きたい問題を計算できます。妹の宿題はホーム画面で解きました。 ### 5/5 — Not so bad *2026-02-09, version 3.1.9* I’m not sure it’s pretty a great app sometimes it would give hard explaining it but it says after every lesson the app has a lesson for the website but Japanese only why don’t the app has the explaining IN the app but it’s quiet fine I’ll just translate it BUT GUYS the EXPLANATION IS REALLY HELPFUL IF YALL TRANSLATE IT I ….RECOMMEND IT even though the donating deals are GOOD with a special no add offer the app doesn’t even has A-LOT OF ADS ### 5/5 — 😋 *2026-02-01, version 3.1.9* I like it a lot it makes it easy to learn how to use the abacus. The only thing I would complain about is not being able to skip levels. ### 5/5 — Recommend! *2026-01-29, version 3.1.9* This is really good if you wanna learn abacus math and you don’t have to pay for anything and there’s no ads! I definitely recommend for beginners! ### 5/5 — Abacus *2026-01-14, version 3.1.9* I like abacus ### 5/5 — Nice☺️ *2025-12-24, version 3.1.9* Helped me get the basic concept in less than an hour. I think it’s pretty straight forward and the practice is decent. --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-05.*