# Choco abacus vs Number Sums

The clearest difference is review sentiment: Choco abacus at 88% against Number Sums's 25%. Choco abacus also leads on in-app purchases (none vs 1) and iOS requirement (9.0 vs 15.0). Number Sums's advantage is rating (4.6 vs 3.2) and ratings volume (31K vs 5). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Number Sums sells 1 one-off in-app purchase. Choco abacus asks for nothing beyond the download.

Number Sums holds the better App Store score, 4.6 against 3.2. That said, the two scores are not equally well evidenced: Number Sums has 31K ratings behind it against 5, so its average is the more settled of the two. Written reviews complicate that: 88% of Choco abacus's written reviews are positive against 25% of Number Sums's, so the app with the better star average is not the one people write more warmly about.

Choco abacus ships an update monthly, Number Sums every 2 months. The most recent releases landed on November 2, 2026 and November 11, 2026 respectively.

## The numbers

| Metric | Choco abacus | Number Sums |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.2 (5 ratings)](https://appshunter.io/ios/app/choco-abacus/id1104805279/reviews) | **[4.6 (31K ratings)](https://appshunter.io/ios/app/number-sums-numbers-game/id6449427809/reviews)** |
| Number of ratings | 5 | **31K** |
| Positive reviews | **87.5% of reviews** | 25.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Best chart rank | — | **#202** |
| Size | 107 MB | 227 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Park Jisang](https://appshunter.io/developer/995438886) | [Easybrain Ltd](https://appshunter.io/developer/1190815537) |

## What reviewers say

### Choco abacus

[App page](https://appshunter.io/ios/app/choco-abacus/id1104805279)

Learn and master mental calculation with an engaging abacus game. Features a friendly tutorial and a simple, fun game system that allows you to unlock new stages as you play.

**Highlights:** Easy to learn abacus mechanics, Friendly tutorial for beginners, Simple and fun game system, Unlock new stages through gameplay, Mental calculation practice

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

**In-app purchases:** none


### Number Sums

[App page](https://appshunter.io/ios/app/number-sums-numbers-game/id6449427809)

**Currently charting:** #202 Top Free · Board (US App Store)

This app offers a challenging number puzzle designed to enhance mental math skills. Players must make the sum of numbers in rows, columns, and colored regions match given clues by circling correct numbers and erasing extras. It provides a fun way to practice arithmetic and logic with various difficulty levels.

**Highlights:** Summing numbers in rows and columns, Matching sums to clues, Circling and erasing numbers, Multiple difficulty levels, Board sizes from 3x3 to 10x10, Hint system

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Number Sums No Ads | $14.99 | one-time |

**What reviewers like**

- 🧠 Challenging brain exercise
- 🔢 Enjoyable number-based gameplay
- 👍 Well-designed interface
- 🕰️ No time pressure

**What reviewers complain about**

- 💢 Excessive mid-game ads
- 🤔 Toggle button issues
- 🔍 Small text/numbers
- 🔋 Game drains battery

**Reported bugs**

- Incorrect number removal function removed
- Ads randomly opening browser pages

**Requested features**

- Dark mode option
- Separate buttons for circle/erase
- Auto-erase incorrect numbers
- Difficulty/grid size selection


## Frequently asked questions

### Is Choco abacus free?

Choco abacus is free to download, with no in-app purchases.

### Is Number Sums free?

Number Sums is free to download, with in-app purchases available.

### Which has better reviews, Choco abacus or Number Sums?

Number Sums is rated higher. Choco abacus averages 3.2 out of 5 from 5 ratings, while Number Sums averages 4.6 from 31K ratings.

### Do Choco abacus or Number Sums have ads?

Both Choco abacus and Number Sums show ads.

### Which is updated more often, Choco abacus or Number Sums?

Choco abacus ships an update monthly, and Number Sums every 2 months. Most recently, Choco abacus was updated on November 2, 2026 and Number Sums on November 11, 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.*