# Calculator & abacus training vs Abacus Lesson

The clearest difference is rating: Abacus Lesson at 4.8 against Calculator & abacus training's 1.0. Abacus Lesson also leads on ads (none vs shown) and update cadence (every 2 days vs every 2 months). Calculator & abacus training's advantage is review sentiment (86% vs 75%). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Calculator & abacus training sells 1 one-off in-app purchase and Abacus Lesson sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Abacus Lesson holds the better App Store score, 4.8 against 1.0. That said, the two scores are not equally well evidenced: Abacus Lesson has 99 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 86% of Calculator & abacus training's written reviews are positive against 75% of Abacus Lesson's, so the app with the better star average is not the one people write more warmly about.

Calculator & abacus training ships an update every 2 months, Abacus Lesson every 2 days. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Calculator & abacus training | Abacus Lesson |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/calculator-and-abacus-training/id1092519812/reviews) | **[4.8 (99 ratings)](https://appshunter.io/ios/app/abacus-lesson/id1596053232/reviews)** |
| Number of ratings | 1 | **99** |
| Positive reviews | **85.7% of reviews** | 75.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 2 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 20 MB | 153 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [kenji kiuchi](https://appshunter.io/developer/553473005) | [Hirokazu Komatsu](https://appshunter.io/developer/1523833531) |

## What reviewers say

### Calculator & abacus training

[App page](https://appshunter.io/ios/app/calculator-and-abacus-training/id1092519812)

Enhance your math skills with calculation drills for abacus and calculator. Customize training sessions for addition, subtraction, multiplication, and division, with advanced options available after purchase. Challenge yourself in a mode where problems increase in difficulty.

**Highlights:** Abacus and calculator training, Customizable training modes, Addition, subtraction, multiplication, division, Progress tracking, Challenge mode with increasing difficulty, Up to 5-digit calculations

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ad & All function release | $9.99 | one-time |


### Abacus Lesson

[App page](https://appshunter.io/ios/app/abacus-lesson/id1596053232)

Master mental arithmetic and abacus calculation with this comprehensive app. Learn efficient finger movements and mental math techniques to solve complex problems quickly. Enjoy a customizable and ad-free learning experience with progress tracking.

**Highlights:** Abacus lessons, Mental arithmetic training, Finger movement focus, Customizable abacus color, Screen orientation options, Trophy system for goals

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock all contents | $5.99 | one-time |


## Frequently asked questions

### Is Calculator & abacus training free?

Calculator & abacus training is free to download, with in-app purchases available.

### Is Abacus Lesson free?

Abacus Lesson is free to download, with in-app purchases available.

### Which has better reviews, Calculator & abacus training or Abacus Lesson?

Abacus Lesson is rated higher. Calculator & abacus training averages 1.0 out of 5 from 1 ratings, while Abacus Lesson averages 4.8 from 99 ratings.

### Do Calculator & abacus training or Abacus Lesson have ads?

Calculator & abacus training shows ads; Abacus Lesson does not.

### Which is updated more often, Calculator & abacus training or Abacus Lesson?

Calculator & abacus training ships an update every 2 months, and Abacus Lesson every 2 days. Most recently, Calculator & abacus training was updated on November 6, 2026 and Abacus Lesson on November 3, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*