# Memory training vs SudokuSum

The clearest difference is ads: SudokuSum at none against Memory training's shown. SudokuSum also leads on update cadence (every 3 months vs every 60 months). Memory training's advantage is iOS requirement (13.0 vs 17.0). On price, 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.

Memory training ships an update every 60 months, SudokuSum every 3 months. The most recent releases landed on October 16, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Memory training | SudokuSum |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/memory-training-numbers/id1452564353/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 76.9% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 60 months | **Every 3 months** |
| Monetization | Ad-supported | — |
| Size | 19 MB | 1 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Dmitry Belyaev](https://appshunter.io/developer/1452564352) | [AirStair Technology LLC](https://appshunter.io/developer/1570024685) |

## What reviewers say

### Memory training

[App page](https://appshunter.io/ios/app/memory-training-numbers/id1452564353)

This game challenges you to memorize number sequences and then recall them in ascending order. Each level presents more numbers to remember, increasing the difficulty. succeed by opening all numbers correctly within the time limit.

**Highlights:** Memorize number sequences, Recall numbers in ascending order, Increasing difficulty per level, Timed gameplay, Mistake-free level completion

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

**In-app purchases:** none


### SudokuSum

[App page](https://appshunter.io/ios/app/sudokusum/id6736671831)

**In-app purchases:** none


## Frequently asked questions

### Is Memory training free?

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

### Is SudokuSum free?

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

### Do Memory training or SudokuSum have ads?

Memory training shows ads; SudokuSum does not.

### Which is updated more often, Memory training or SudokuSum?

Memory training ships an update every 60 months, and SudokuSum every 3 months. Most recently, Memory training was updated on October 16, 2026 and SudokuSum on October 7, 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.*