# Flash Anzan vs Abacus Slash

The clearest difference is update cadence: Abacus Slash at every 2 days against Flash Anzan's every 3 months. Flash Anzan's advantage is iOS requirement (15.0 vs 17.4). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Flash Anzan sells 1 one-off in-app purchase and Abacus Slash sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Flash Anzan ships an update every 3 months, Abacus Slash every 2 days. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Flash Anzan | Abacus Slash |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/abacus-slash/id6770142318/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 3 months | **Every 2 days** |
| Monetization | — | Free with in-app purchases |
| Size | 50 MB | 13 MB |
| Requires iOS | **15.0** | 17.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [tomople](https://appshunter.io/developer/1384257281) | [POPPO STUDIO](https://appshunter.io/developer/304529440) |

## What reviewers say

### Flash Anzan

[App page](https://appshunter.io/ios/app/flash-anzan-soroban-math/id6477599363)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


### 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 Flash Anzan free?

Flash Anzan is free to download, with in-app purchases available.

### Is Abacus Slash free?

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

### Do Flash Anzan or Abacus Slash have ads?

Both Flash Anzan and Abacus Slash show ads.

### Which is updated more often, Flash Anzan or Abacus Slash?

Flash Anzan ships an update every 3 months, and Abacus Slash every 2 days. Most recently, Flash Anzan was updated on November 4, 2026 and Abacus Slash on October 31, 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.*