# Abacus 2.0 — user reviews

> 10 indexed App Store user reviews of Abacus 2.0 by Kenji Yamamoto, rated 3.70/5 from 6 ratings.

- Source: https://appshunter.io/ios/app/abacus-20/id993078416/reviews
- App overview in markdown: https://appshunter.io/ios/app/abacus-20/id993078416.md
- Rating breakdown: 5★ 3 · 4★ 1 · 3★ 0 · 2★ 1 · 1★ 1

## Most critical reviews (10 lowest-rated)

### 1/5 — 缺點

*2024-10-31, version 1.3.1*

如果有定位點會更好

### 1/5 — I don't like it

*2024-10-22, version 1.3.1*

It doesn't even teach you how to use it

### 1/5 — 滿版廣告

*2022-10-14, version 1.3.1*

找不到關閉= =

### 1/5 — Terrible

*2021-03-23*

I have an iPhone 8. The app doesn’t open properly, and stalls on a screen with the company logo. I tried to install it twice, and same problem. Had to delete it as it is completely nonfunctional.

### 1/5 — そろばん2.0 課金について

*2017-12-25, version 1.1.0*

そろばん2.0を起動したら、宣伝が表示され「今後表示しないようにする」にクリックしたら、いきなり2000円取られた。
非常に悪質です。
返金してもうにはどうしたらいいでしょうか！

### 4/5 — Please add more

*2022-02-03, version 1.3.1*

This app is truly amazing and I appreciate it for letting me use abacus anytime anywhere, but the way to divide that I learnt was only applicable on a 2:5 abacus (an abacus with 2 heaven beads and 5 earth beads). Please make this change as well because then what we can do on a 1:4 abacus (the app currently) can still be done while we can also do what can be done with a 2:5 abacus. It would really be appreciable if you would make this modification.

### 4/5 — コンセプトは良いと思いますが

*2021-06-08, version 1.3.1*

どうして定位点がないのでしょうか？
とても使いにくいです。
定位点を表示するかどうかなど選べるようにして欲しいです。
アプリの動きは軽快で良いと思います。

### 5/5 — EXCELENTE!!

*2026-02-15, version 1.3.1*

Muito bom, dá para escolher o tamanho e até uma opção para mostrar qual o valor que está sendo representado, o que facilita para iniciantes. Esse app é só do soroban, mas não diz que é pra APRENDER, ent nao tem tutorial, mas serve muito para quem acompanha aulas, por exemplo, no youtube e nao tem o soroban

### 5/5 — Please add more

*2020-09-14, version 1.3.1*

Hi !Please add a tutorial for how to calculate. I truly hope you read this.

### 5/5 — A useable abacus

*2019-10-19*

Looks.like one I wanted to buy in Tokyo. I already know how to use it. This gives me a useable abacus on my phone.

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*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 2026-06-18.*