# MemTrainer vs SHI

The clearest difference is price: MemTrainer at Free against SHI's $2.99. SHI's advantage is ads (none vs shown) and update cadence (every 2 months vs every 57 months). On in-app purchases, device support and iOS requirement there is nothing between them.

MemTrainer is free to download; SHI costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

MemTrainer ships an update every 57 months, SHI every 2 months. The most recent releases landed on October 4, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | MemTrainer | SHI |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | — | **[4.6 (215 ratings)](https://appshunter.io/ios/app/shiro/id1398905123/reviews)** |
| Number of ratings | — | **215** |
| Positive reviews | — | 68.3% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 57 months | **Every 2 months** |
| Monetization | — | Paid |
| Size | 8 MB | 181 MB |
| Requires iOS | 11.0 | **10.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [POK](https://appshunter.io/developer/357275870) | [the brothers grimm](https://appshunter.io/developer/1398905122) |

## What reviewers say

### MemTrainer

[App page](https://appshunter.io/ios/app/memtrainer/id506423958)

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

**In-app purchases:** none


### SHI

[App page](https://appshunter.io/ios/app/shiro/id1398905123)

Engage with stories from early Japan by solving intricate puzzles on a beautifully designed lacquer box. Journey through ancient tales, uncover hidden meanings, and experience the art of Japanese lacquerware.

**Highlights:** Challenging lacquer box puzzles, Engaging ancient Japanese stories, Beautiful Japanese lacquerware design, Japanese language learning elements, Taiko drum soundscapes

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

**In-app purchases:** none

**What reviewers like**

- ✨ Beautiful graphics and art
- 🎧 Soothing sound design
- 🧠 Engaging and challenging puzzles
- 📚 Interesting story and lore
- 🇯🇵 Japanese mythology and language integration

**What reviewers complain about**

- 😩 Puzzles become frustrating
- ❓ Lack of clear instructions
- 😴 Gameplay can be boring
- 📉 Too simple and limited
- ⏳ Not enough content

**Reported bugs**

- Cannot find a way to reset the game
- Error with game purchase
- Parts don't seem to work
- Game enforces arbitrary move order
- Confusing UI, need clearer restart/reset options

**Requested features**

- More levels/stories
- Ability to reset the game
- Landscape view option for iPad
- Daily puzzles
- More instructions/tutorial


## Frequently asked questions

### Is MemTrainer free?

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

### Is SHI free?

SHI costs $2.99, with no in-app purchases.

### Do MemTrainer or SHI have ads?

MemTrainer shows ads; SHI does not.

### Which is updated more often, MemTrainer or SHI?

MemTrainer ships an update every 57 months, and SHI every 2 months. Most recently, MemTrainer was updated on October 4, 2026 and SHI on October 9, 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.*