# Num25 vs Abacus Slash

The clearest difference is rating: Abacus Slash at 5.0 against Num25's 4.4. Abacus Slash also leads on update cadence (every 2 days vs every 6 weeks). Num25's advantage is in-app purchases (none vs 1) and ratings volume (5 vs 1). On price, ads and device support there is nothing between them.

Both are free to download. Abacus Slash sells 1 one-off in-app purchase. Num25 asks for nothing beyond the download.

Abacus Slash holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Num25 has 5 ratings behind it against 1, so its average is the more settled of the two.

Num25 ships an update every 6 weeks, Abacus Slash every 2 days. The most recent releases landed on October 12, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Num25 | Abacus Slash |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (5 ratings)](https://appshunter.io/ios/app/num25/id860993241/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/abacus-slash/id6770142318/reviews)** |
| Number of ratings | **5** | 1 |
| Positive reviews | 88.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 6 weeks | **Every 2 days** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 5 MB | 13 MB |
| Requires iOS | **11.0** | 17.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [QQ TSUBASA](https://appshunter.io/developer/568750169) | [POPPO STUDIO](https://appshunter.io/developer/304529440) |

## What reviewers say

### Num25

[App page](https://appshunter.io/ios/app/num25/id860993241)

Engage in a classic numbers game with a competitive twist. Challenge friends in battle mode for enhanced enjoyment and strategic play.

**Highlights:** Classic numbers game gameplay, Competitive battle mode, Play with friends, Enhanced enjoyment, Strategic play

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

**In-app purchases:** none


### Abacus Slash

[App page](https://appshunter.io/ios/app/abacus-slash/id6770142318)

A fast-paced game where you quickly input numbers on a virtual abacus to match on-screen prompts before your health depletes. Progress through 30 stages and 10 chapters, improving your mental math speed and abacus skills.

**Highlights:** Lightning-fast abacus calculation, 30 stages with increasing difficulty, Chapter-based story progression, Best time and star ratings, Multiple player profiles, Practice stages for basics

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Stages & Remove Ads | $3.99 | one-time |


## Frequently asked questions

### Is Num25 free?

Num25 is free to download, with no in-app purchases.

### Is Abacus Slash free?

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

### Which has better reviews, Num25 or Abacus Slash?

Abacus Slash is rated higher. Num25 averages 4.4 out of 5 from 5 ratings, while Abacus Slash averages 5.0 from 1 ratings.

### Do Num25 or Abacus Slash have ads?

Both Num25 and Abacus Slash show ads.

### Which is updated more often, Num25 or Abacus Slash?

Num25 ships an update every 6 weeks, and Abacus Slash every 2 days. Most recently, Num25 was updated on October 12, 2026 and Abacus Slash on September 29, 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.*