Circle Stop vs Nukleus
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Circle Stop
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.
- One-button gameplay
- Tap to stop spinner
- Score points on target
- Bullseye bonus points
- Strike system
- Colorful explosions
- Leaderboards
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"Get it." — Stephen Totilo, Kotaku "CIRCLE STOP IS COLORFUL AND EVASIVE LIGHTNING IN AN IOS BOTTLE" — Jamin Warren, Killscreen “I just made cool noises happen!” — Peter Berkman, Anamanaguchi “This game is addictive as hell.” — Eric Blattberg, VentureBeat Circle Stop is an addictingly simple one-button game for touch devices, from New York City's newest two person indie game studio Up at Night. As the spinner goes round and round, tap anywhere to stop it. Hit anywhere on the target to score points. Hit the bullseye for even more points. Miss the target and get a strike; three strikes and you're out! But no matter what happens, there will be explosions of colors! Complete with leaderboards so you can challenge your friends! Featuring original audio by NICHOLÀS BENEDEK & FRIENDLY GHOST.
Nukleus
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.
- Single tap gameplay
- Color matching mechanic
- Requires quick reflexes
- Full concentration needed
- Game Center leaderboard
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Nukleus is an addictive single tap game that requires quick reflexes and full concentration. Tap to change color of the core to match the incoming objects. How long you can stay alive? Challenge your friends with Game Center leaderboard.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Circle Stop | Nukleus |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (6 ratings) — better | 4.1 (28 ratings) |
| Positive reviews | 85.9% of reviews — better | 67.3% of reviews |
| Number of ratings | 6 | 28 — better |
| Update frequency | Every 10 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 8.0 — better |
| Further details — not scored | ||
| Size | 79 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | Twenty Percent | Umbrella Games LLC |
Customer experience
Circle Stop
Nukleus
Bugs and requests
Circle Stop
Reported bugs
3 issues- App continuously crashes
- App cannot download completely and cannot be deleted
- Graphics overflow the screen on iPad
Requested features
5 requests- Multiplayer mode with score keeping
- Ability to earn extra lives
- Save color preferences
- Dark mode option
- More visual effects
Nukleus
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Circle Stop
- Turn Off Ads FOREVER$1.99
Nukleus
- Remove Ads$0.99
- 3000 Orbs$0.99
- 10,000 Orbs$1.99
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- 30,000 Orbs$2.99
