# Boop vs Mochi Stack

The clearest difference is in-app purchases: Boop at none against Mochi Stack's 10. Boop also leads on iOS requirement (15.0 vs 17.0). Mochi Stack's advantage is update cadence (every 2 days vs fortnightly). On price, ads and device support there is nothing between them.

Both are free to download. Mochi Stack sells 10 one-off in-app purchases. Boop asks for nothing beyond the download.

Boop ships an update fortnightly, Mochi Stack every 2 days. The most recent releases landed on October 3, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Boop | Mochi Stack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (10 ratings)](https://appshunter.io/ios/app/mochi-stack/id6782417720/reviews)** |
| Number of ratings | — | **10** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Fortnightly | **Every 2 days** |
| Monetization | — | Free with in-app purchases |
| Size | 160 MB | 68 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Evgenii Nikolskii](https://appshunter.io/developer/1163688564) | [Kimberly Almonte](https://appshunter.io/developer/6782417722) |

## What reviewers say

### Boop

[App page](https://appshunter.io/ios/app/boop-a-cat/id6763578554)

**Features:** macOS Compatibility

**In-app purchases:** none


### Mochi Stack

[App page](https://appshunter.io/ios/app/mochi-stack/id6782417720)

A relaxing tile-sorting puzzle game featuring cute mochi characters. Stack matching tiles to clear the board and enjoy a stress-free problem-solving experience with daily challenges and unlockable themes.

**Highlights:** Hundreds of levels, Daily puzzles, Spin the wheel for prizes, Power-ups (Undo, Swap, Magnet), Unlockable mochi themes, Win streak rewards, Game Center achievements and leaderboard

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kitty Theme | $0.99 | one-time |
| Small Coin Pack | $0.99 | one-time |
| Skip Pass Single | $0.99 | one-time |
| Puppy Theme | $0.99 | one-time |
| Stamp Theme | $0.99 | one-time |
| Piggy Bank Break | $1.99 | one-time |
| Medium Coin Pack | $1.99 | one-time |
| Skip Pass Triple | $1.99 | one-time |
| Large Coin Pack | $4.99 | one-time |
| Mega Bundle | $9.99 | one-time |


## Frequently asked questions

### Is Boop free?

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

### Is Mochi Stack free?

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

### Do Boop or Mochi Stack have ads?

Both Boop and Mochi Stack show ads.

### Which is updated more often, Boop or Mochi Stack?

Boop ships an update fortnightly, and Mochi Stack every 2 days. Most recently, Boop was updated on October 3, 2026 and Mochi Stack on September 30, 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.*