# ルチルアプリ vs 間違い探し 海の生き物

The clearest difference is update cadence: 間違い探し 海の生き物 at every 2 weeks against ルチルアプリ's every 5 months. ルチルアプリ's advantage is iOS requirement (12.0 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.

ルチルアプリ ships an update every 5 months, 間違い探し 海の生き物 every 2 weeks. The most recent releases landed on November 7, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | ルチルアプリ | 間違い探し 海の生き物 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 5 months | **Every 2 weeks** |
| Monetization | — | Ad-supported |
| Size | 35 MB | 273 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Motoki Endo](https://appshunter.io/developer/1209051574) | [Yuki Kodama](https://appshunter.io/developer/981364994) |

## What reviewers say

### ルチルアプリ

[App page](https://appshunter.io/ios/app/id1535762939)

**Features:** macOS Compatibility

**In-app purchases:** none


### 間違い探し 海の生き物

[App page](https://appshunter.io/ios/app/id6805425937)

Explore Japan's marine life through engaging spot-the-difference puzzles and an interactive creature encyclopedia. Discover colorful fish, deep-sea dwellers, and coral reef inhabitants while learning their names and characteristics. Perfect for all ages who love the ocean and its fascinating creatures.

**Highlights:** Spot the difference puzzles, Marine creature encyclopedia, Learn about Japanese sea life, Cute and friendly illustrations, Suitable for all ages, Aquarium and ocean theme

**In-app purchases:** none


## Frequently asked questions

### Is ルチルアプリ free?

ルチルアプリ is free to download, with no in-app purchases.

### Is 間違い探し 海の生き物 free?

間違い探し 海の生き物 is free to download, with no in-app purchases.

### Do ルチルアプリ or 間違い探し 海の生き物 have ads?

Both ルチルアプリ and 間違い探し 海の生き物 show ads.

### Which is updated more often, ルチルアプリ or 間違い探し 海の生き物?

ルチルアプリ ships an update every 5 months, and 間違い探し 海の生き物 every 2 weeks. Most recently, ルチルアプリ was updated on November 7, 2026 and 間違い探し 海の生き物 on November 10, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*