# Circle Stop vs Nukleus

The clearest difference is rating: Circle Stop at 4.7 against Nukleus's 4.1. Circle Stop also leads on review sentiment (86% vs 67%). Nukleus's advantage is update cadence (every 5 days vs every 10 months) and ratings volume (28 vs 6). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Circle Stop holds the better App Store score, 4.7 against 4.1. Both are backed by a comparable volume of ratings — 6 and 28 respectively. Written reviews point the same way: 86% of Circle Stop's written reviews are positive against 67% of Nukleus's.

Circle Stop ships an update every 10 months, Nukleus every 5 days. The most recent releases landed on October 8, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Circle Stop | Nukleus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (6 ratings)](https://appshunter.io/ios/app/circle-stop/id728614805/reviews)** | [4.1 (28 ratings)](https://appshunter.io/ios/app/nukleus/id1124324199/reviews) |
| Number of ratings | 6 | **28** |
| Positive reviews | **85.9% of reviews** | 67.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 5 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 79 MB | 29 MB |
| Requires iOS | 13.0 | **8.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Twenty Percent](https://appshunter.io/developer/728614808) | [Umbrella Games LLC](https://appshunter.io/developer/1059299541) |

## What reviewers say

### Circle Stop

[App page](https://appshunter.io/ios/app/circle-stop/id728614805)

A simple one-button game where you tap to stop a spinning target. Aim for the bullseye to score points, but miss and you'll get a strike. Enjoy colorful explosions and compete with friends on leaderboards.

**Highlights:** One-button gameplay, Tap to stop spinner, Score points on target, Bullseye bonus points, Strike system, Colorful explosions, Leaderboards

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Turn Off Ads FOREVER | $1.99 | one-time |

**What reviewers like**

- 👍 Simple and fun gameplay
- 🎨 Attractive color schemes/themes
- 🎵 Great music/soundtracks
- 🧘 Relaxing and meditative experience
- ⏱️ Good time killer/short breaks

**What reviewers complain about**

- 🐛 App crashes frequently
- 📺 Too much advertising
- 😴 Gets monotonous/boring over time
- ⚙️ Color preferences not saved
- 📱 Graphics overflow on iPad

**Reported bugs**

- App continuously crashes
- App cannot download completely and cannot be deleted
- Graphics overflow the screen on iPad

**Requested features**

- Multiplayer mode with score keeping
- Ability to earn extra lives
- Save color preferences
- Dark mode option
- More visual effects


### Nukleus

[App page](https://appshunter.io/ios/app/nukleus/id1124324199)

Test your reflexes in this addictive single-tap game. Match the core's color to incoming objects to survive as long as possible. Compete with friends on the Game Center leaderboard.

**Highlights:** Single tap gameplay, Color matching mechanic, Requires quick reflexes, Full concentration needed, Game Center leaderboard

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |
| 3000 Orbs | $0.99 | one-time |
| 10,000 Orbs | $1.99 | one-time |
| 30,000 Orbs | $2.99 | one-time |


## Frequently asked questions

### Is Circle Stop free?

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

### Is Nukleus free?

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

### Which has better reviews, Circle Stop or Nukleus?

Circle Stop is rated higher. Circle Stop averages 4.7 out of 5 from 6 ratings, while Nukleus averages 4.1 from 28 ratings.

### Do Circle Stop or Nukleus have ads?

Neither Circle Stop nor Nukleus shows ads.

### Which is updated more often, Circle Stop or Nukleus?

Circle Stop ships an update every 10 months, and Nukleus every 5 days. Most recently, Circle Stop was updated on October 8, 2026 and Nukleus on October 7, 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.*