# Number Chain by SZY vs Brain training. Remember seq

The clearest difference is update cadence: Number Chain by SZY at every 4 months against Brain training. Remember seq's every 17 months. Brain training. Remember seq's advantage is iOS requirement (8.1 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Number Chain by SZY ships an update every 4 months, Brain training. Remember seq every 17 months. The most recent releases landed on October 23, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Number Chain by SZY | Brain training. Remember seq |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/number-chain-by-szy/id490969339/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 4 months** | Every 17 months |
| Monetization | Ad-supported | — |
| Size | 66 MB | 64 MB |
| Requires iOS | 15.0 | **8.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shen Zhongyuan](https://appshunter.io/developer/385090494) | [Ruslan Goncharenko](https://appshunter.io/developer/934710362) |

## What reviewers say

### Number Chain by SZY

[App page](https://appshunter.io/ios/app/number-chain-by-szy/id490969339)

A puzzle game where you create chains of three or more matching or consecutive numbers to clear them and earn points. Achieve high scores by forming longer chains and triggering "Rensa" combos.

**Highlights:** Build removable chains of numbers, Score points based on chain length, Trigger automatic chain reactions (Rensa), Utilize a 'Final Number of 0' for clearing, Support for leaderboards and achievements, Automatic game saving

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

**In-app purchases:** none


### Brain training. Remember seq

[App page](https://appshunter.io/ios/app/brain-training-remember-seq/id1033117188)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Number Chain by SZY free?

Number Chain by SZY is free to download, with no in-app purchases.

### Is Brain training. Remember seq free?

Brain training. Remember seq is free to download, with no in-app purchases.

### Do Number Chain by SZY or Brain training. Remember seq have ads?

Both Number Chain by SZY and Brain training. Remember seq show ads.

### Which is updated more often, Number Chain by SZY or Brain training. Remember seq?

Number Chain by SZY ships an update every 4 months, and Brain training. Remember seq every 17 months. Most recently, Number Chain by SZY was updated on October 23, 2026 and Brain training. Remember seq on October 4, 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.*