# Flap Happy vs Stack Jump

Flap Happy and Stack Jump both sit at 4.4 stars, but that hides the real split: 85% of Flap Happy's written reviews are positive against 48% of Stack Jump's. Flap Happy also leads on ads (none vs shown) and iOS requirement (8.0 vs 13.0). Stack Jump's advantage is update cadence (every 4 weeks vs every 28 months) and ratings volume (299K vs 19). On price, rating, in-app purchases and monetization model there is nothing between them.

Both are free to download. Flap Happy sells 4 one-off in-app purchases and Stack Jump sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Stack Jump holds the better App Store score, 4.6 against 4.4. That said, the two scores are not equally well evidenced: Stack Jump has 299K ratings behind it against 19, so its average is the more settled of the two. Written reviews complicate that: 85% of Flap Happy's written reviews are positive against 48% of Stack Jump's, so the app with the better star average is not the one people write more warmly about.

Flap Happy ships an update every 28 months, Stack Jump every 4 weeks. The most recent releases landed on August 18, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Flap Happy | Stack Jump |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (19 ratings)](https://appshunter.io/ios/app/flap-happy/id820898817/reviews) | **[4.6 (299K ratings)](https://appshunter.io/ios/app/stack-jump/id1263426717/reviews)** |
| Number of ratings | 19 | **299K** |
| Positive reviews | **84.6% of reviews** | 47.6% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 28 months | **Every 4 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 12 MB | 155 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | +12 |
| Developer | [Funnerware](https://appshunter.io/developer/674121296) | [Voodoo](https://appshunter.io/developer/714804730) |

## What reviewers say

### Flap Happy

[App page](https://appshunter.io/ios/app/flap-happy/id820898817)

Guide a determined bird through challenging obstacles with unique power-ups and hazards. Enjoy a visually engaging experience with entertaining sound effects and special death animations. Choose from six distinct birds to embark on this fun yet demanding adventure.

**Highlights:** Progressive and Classic difficulty modes, Crash Helmets and Jet Boosts, Head starts and unique hazards, Special death effects, 6 playable birds, Distinctive art and animation

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Permanent Ad Removal | $0.99 | one-time |
| Unlock for All Bird Awards | $0.99 | one-time |
| Pile of 1,000 Coins | $0.99 | one-time |
| Full Unlock (The Tweet Deal) | $2.99 | one-time |


### Stack Jump

[App page](https://appshunter.io/ios/app/stack-jump/id1263426717)

Build the tallest tower by stacking blocks as high as you can. Compete for your highscore in an endless mode, conquer 36 challenges, and unlock 20 unique characters.

**Highlights:** Stack blocks to build towers, Endless mode for highscores, 36 challenges to complete, Unlock 20 characters, Improve highscore

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |

**What reviewers like**

- 🤩 Addictive and fun gameplay
- 😍 Cute and charming characters
- 🎨 Variety of themes and backgrounds
- 🎉 Rewarding to unlock new content

**What reviewers complain about**

- 🤬 Excessive and intrusive ads
- 🐛 Frequent crashes and glitches
- 🤯 Laggy performance and freezing issues
- 😕 Inconsistent scoring/mechanics

**Reported bugs**

- Game crashes on launch
- Blocks not registering perfect jumps
- Second chance feature not working as expected
- Inconsistent performance across devices

**Requested features**

- Reduce ads or offer paid ad-free version
- Improve stability and fix bugs
- Add more challenge modes and levels
- Introduce leaderboards and social features


## Frequently asked questions

### Is Flap Happy free?

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

### Is Stack Jump free?

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

### Which has better reviews, Flap Happy or Stack Jump?

Stack Jump is rated higher. Flap Happy averages 4.4 out of 5 from 19 ratings, while Stack Jump averages 4.6 from 299K ratings.

### Do Flap Happy or Stack Jump have ads?

Stack Jump shows ads; Flap Happy does not.

### Which is updated more often, Flap Happy or Stack Jump?

Flap Happy ships an update every 28 months, and Stack Jump every 4 weeks. Most recently, Flap Happy was updated on August 18, 2026 and Stack Jump on October 1, 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.*