Sidius Nova vs Attack Of The Circle
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Sidius Nova
Lead your species to survival after a homeworld destruction. Collect resources, build ships, and engage in epic space battles. Choose to play as humans or an alien armada, unlocking new ships and strategies as you conquer galaxies.
- Resource collection
- Ship building
- Epic space battles
- Playable factions (humans/aliens)
- Unlockable ships
- Galactic conquest
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by Stefan Schmitt and Ben Jelter -YOUR HOMEWORLD HAS BEEN DESTROYED- Your remaining motherships are the only way to guarantee the survival of your species. Collect resources to build ships for epic space battles. "has the same 'one more turn oh god one more turn' hook that its grander siblings on the PC have" -KOTAKU Also featured on Space Sector! HOURS OF STRATEGIC DEEP SPACE GAMEPLAY Sidius Nova is a strategy game designed from the ground up to provide a deep and satisfying experience on your iOS device. PICK A SIDE Play as the last humans alive or an alien armada. UNLOCKABLE SHIPS Earn new ships as you play! Conquer entire galaxies and expand your fleet by researching new units. New units dramatically expand the gameplay by offering new defensive and offensive strategies. Follow @sidiusnova on twitter to find out more and give us feedback!
Attack Of The Circle
Guide Mr. Bird through a constantly changing, shape-shifting circle. Tap the screen to make him fly and avoid deadly walls. See how long you can survive in this endless runner.
- Endless gameplay
- Shape-shifting circle
- Tap-to-fly controls
- Avoid deadly walls
- High score challenge
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Can you keep Mr. Bird alive? Guide Mr. Bird through an endless, shape-shifting circle that never stops changing. Tap the screen to make Mr. Bird fly—but be careful! The circle generates deadly walls, and one wrong move ends the run. How long can you survive?
Screenshots
Verdict
The clearest difference is rating: Attack Of The Circle at 5.0 against Sidius Nova's 4.4. Attack Of The Circle also leads on review sentiment (100% vs 84%). Sidius Nova's advantage is ads (none vs shown) and ratings volume (49 vs 2). On price, update cadence, 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. Sidius Nova sells 3 one-off in-app purchases and Attack Of The Circle sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Attack Of The Circle holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Sidius Nova has 49 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 84% of Sidius Nova's written reviews are positive against 100% of Attack Of The Circle's.
Sidius Nova ships an update every 3 months, Attack Of The Circle every 2 months. The most recent releases landed on November 1, 2026 and November 4, 2026 respectively.
| Parameter | Sidius Nova | Attack Of The Circle |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (49 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 84.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 49 — better | 2 |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 14.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 190 MB | 6 MB |
| Age rating | 9+ | 4+ |
| Developer | Stefan Schmitt | THE RISE COLLECTION |
Customer experience
Sidius Nova
Attack Of The Circle
Bugs and requests
Sidius Nova
Reported bugs
5 issues- Occasional crashing
- Repeated crashing during combat
- Crashing when fighting mothership
- Game progress not syncing between devices
- App leaves residual files after uninstallation
Requested features
16 requests- Add multiplayer/hot seat/skirmish
- Add longer single player campaign
- Add more frequent dialogue
- Add meaningful player-driven plot choices
- Add 'back' button for dialogue
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- Option to skip mothership death animation
- Rework research point system
- Add bonus for multiple fleets
- Improve mothership strength/abilities
- Add iPad version/support
- Add iPhone 5 screen support
- Add Game Center support
- Add cloud saving system
- Add endless mode
- Add asynchronous multiplayer
- Add fast forward button
Attack Of The Circle
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Sidius Nova
- Genius (RP earned x2)$0.99
- Laboratory (8,000 RP)$1.99
- Singularity (Unlock Everything)$3.99
Attack Of The Circle
- Support A.O.T.C$0.99
- Remove Ads$0.99
Questions
Is Sidius Nova free?
Is Attack Of The Circle free?
Which has better reviews, Sidius Nova or Attack Of The Circle?
Do Sidius Nova or Attack Of The Circle have ads?
Which is updated more often, Sidius Nova or Attack Of The Circle?
Other comparisons
