# Serious Scramblers vs UFO99

The clearest difference is update cadence: UFO99 at every 2 days against Serious Scramblers's every 3 months. Serious Scramblers's advantage is rating (4.5 vs 4.2) and ratings volume (224 vs 41). On price, review sentiment, ads and in-app purchases there is nothing between them.

Both are free to download. Serious Scramblers sells 2 one-off in-app purchases and UFO99 sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Serious Scramblers holds the better App Store score, 4.5 against 4.2. That said, the two scores are not equally well evidenced: Serious Scramblers has 224 ratings behind it against 41, so its average is the more settled of the two. Written reviews point the same way: 70% of Serious Scramblers's written reviews are positive against 69% of UFO99's.

Serious Scramblers ships an update every 3 months, UFO99 every 2 days. Both last shipped on November 3, 2026.

## The numbers

| Metric | Serious Scramblers | UFO99 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (224 ratings)](https://appshunter.io/ios/app/serious-scramblers/id1289369947/reviews)** | [4.2 (41 ratings)](https://appshunter.io/ios/app/ufo99/id1549816260/reviews) |
| Number of ratings | **224** | 41 |
| Positive reviews | **70.4% of reviews** | 69.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 3 months | **Every 2 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 21 MB | 43 MB |
| Requires iOS | **11.0** | 12 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yong Kian Chin](https://appshunter.io/developer/1159442635) | [I Chen Sheng](https://appshunter.io/developer/536427960) |

## What reviewers say

### Serious Scramblers

[App page](https://appshunter.io/ios/app/serious-scramblers/id1289369947)

Dive into a challenging arcade experience where you fall through a bottomless pit, overcoming obstacles and leveling up. Unlock new characters and face massive boss fights in this intense, jumpless platformer.

**Highlights:** Intense arcade action, Level up with obstacles, Unlock new characters, Massive boss fights, Leaderboard rankings, Chip-tune music

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Forced Ads + 200 Coins | $1.99 | one-time |
| Support the dev: play as Chiny | $2.99 | one-time |

**What reviewers like**

- 🎮 Engaging retro 8-bit aesthetic and music
- 👍 Intuitive and easy-to-learn controls
- 🎯 Well-designed level progression and difficulty scaling
- 💡 Innovative ad system that doesn't interrupt gameplay
- 🎨 Polished graphics and visual design

**What reviewers complain about**

- 🐛 Frequent unexpected crashes and game closures
- 🎮 Imprecise and unresponsive controls on some devices
- 💸 Escalating revival costs that drain coin reserves
- 📺 Long ad durations (30+ seconds) between attempts
- 🎯 Unfair boss difficulty spikes

**Reported bugs**

- Game crashes unexpectedly during gameplay
- Game crashes at critical moments near victory
- Controls fail to register player input
- Character moves opposite to intended direction
- Hearts mechanic doesn't function properly

**Requested features**

- Jump button or additional movement mechanics
- Power-ups and special abilities system
- More levels and content variety
- Character upgrades and progression system
- Versus/multiplayer mode


### UFO99

[App page](https://appshunter.io/ios/app/ufo99/id1549816260)

Engage in a vibrant arcade experience, smashing block monsters with hammers and collecting gems. Challenge increasingly difficult levels, battle giant bosses, and enjoy cooperative play with friends. Discover unique characters and power-ups in this fast-paced, visually appealing game.

**Highlights:** Easy flying and combat controls, 1-4 player local co-op multiplayer, Collect over 60 unique characters, Short, quick gameplay sessions (1-3 minutes), Battle giant bosses with power-ups, Colorful and cute graphics

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Alpaca | $0.99 | one-time |
| Hippo | $0.99 | one-time |
| Rabbit | $0.99 | one-time |
| Frog | $0.99 | one-time |
| Snail | $0.99 | one-time |
| Big White Goose | $0.99 | one-time |
| Orange Cat | $0.99 | one-time |
| Summer Octopus | $0.99 | one-time |
| Ad Removal | $1.99 | one-time |
| Ad Removal | $3.99 | one-time |


## Frequently asked questions

### Is Serious Scramblers free?

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

### Is UFO99 free?

UFO99 is free to download, with in-app purchases available.

### Which has better reviews, Serious Scramblers or UFO99?

Serious Scramblers is rated higher. Serious Scramblers averages 4.5 out of 5 from 224 ratings, while UFO99 averages 4.2 from 41 ratings.

### Do Serious Scramblers or UFO99 have ads?

Both Serious Scramblers and UFO99 show ads.

### Which is updated more often, Serious Scramblers or UFO99?

Serious Scramblers ships an update every 3 months, and UFO99 every 2 days. Most recently, Serious Scramblers was updated on November 3, 2026 and UFO99 on November 3, 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.*