# Okinawa Map Puzzle vs Engram

The clearest difference is in-app purchases: Okinawa Map Puzzle at none against Engram's 2. Okinawa Map Puzzle also leads on device support (3 vs 1) and iOS requirement (13.0 vs 17.0). Engram's advantage is ads (none vs shown) and update cadence (weekly vs every 6 months). On price there is nothing between them.

Both are free to download. Engram sells 2 in-app purchases, starting at $3.99 per month. Okinawa Map Puzzle asks for nothing beyond the download.

Okinawa Map Puzzle ships an update every 6 months, Engram weekly. The most recent releases landed on October 9, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Okinawa Map Puzzle | Engram |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 6 months | **Weekly** |
| Size | 88 MB | 4 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Plus Inc. (Japan)](https://appshunter.io/developer/445792061) | [Hirosuke Yonekubo](https://appshunter.io/developer/1625472869) |

## What reviewers say

### Okinawa Map Puzzle

[App page](https://appshunter.io/ios/app/okinawa-map-puzzle/id1667222537)

**Features:** macOS Compatibility

**In-app purchases:** none


### Engram

[App page](https://appshunter.io/ios/app/engram-memory-training/id6784637263)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Engram Pro (Monthly) | $3.99 | per month |
| Engram Pro (Yearly) | $24.99 | per year |


## Frequently asked questions

### Is Okinawa Map Puzzle free?

Okinawa Map Puzzle is free to download, with no in-app purchases.

### Is Engram free?

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

### Do Okinawa Map Puzzle or Engram have ads?

Okinawa Map Puzzle shows ads; Engram does not.

### Which is updated more often, Okinawa Map Puzzle or Engram?

Okinawa Map Puzzle ships an update every 6 months, and Engram weekly. Most recently, Okinawa Map Puzzle was updated on October 9, 2026 and Engram on October 24, 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.*