One Brain vs ImagineThat!
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
One Brain
Test your cognitive abilities with a game inspired by the Stroop effect. Quickly identify matching colors, arrow directions, or true/false math equations under time pressure. Challenge your brain to process conflicting information and achieve high scores.
- Stroop effect inspired gameplay
- Color matching challenges
- Arrow direction tests
- Math equation verification
- Timed gameplay
- Score tracking
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One Brain is inspired by the Stroop effect, a famous psychological test that measures how well you handle conflicting information. For example, it's harder to name the color of a word when the word itself spells a different color. This game challenges your whole brain as you fight to process the mixed signals and make the right call before time runs out. Game modes: • Colors: Does the word match the color it's written in? • Arrows: Is the arrow actually pointing the way it says it is? • Numbers: Is the math equation true or false? • Words: Which word matches the definition? How high can you score under pressure?
ImagineThat!
An interactive game where players use AI to generate images and challenge friends to guess them. It's designed for connection, laughter, and creating memories together, regardless of distance.
- AI-generated images
- Interactive gameplay
- Multiplayer challenges
- Creativity testing
- Connect with friends
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Welcome to ImagineThat! - the interactive game that tests your creativity and immerses you and your friends in the fascinating world of AI-generated images! Team up, challenge each other and see who can guess the images correctly. It’s the perfect way to connect, laugh, and create unforgettable memories with friends no matter where you are.
Screenshots
Verdict
The clearest difference is rating: ImagineThat! at 5.0 against One Brain's 4.4. ImagineThat! also leads on in-app purchases (none vs 1) and iOS requirement (12.0 vs 15). One Brain's advantage is ratings volume (297 vs 2). On price, update cadence, ads and device support 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. One Brain sells 1 one-off in-app purchase. ImagineThat! asks for nothing beyond the download.
ImagineThat! holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: One Brain has 297 ratings behind it against 2, so its average is the more settled of the two.
Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.
| Parameter | One Brain | ImagineThat! |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (297 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 58.6% of reviews | — |
| Number of ratings | 297 — better | 2 |
| Update frequency | Weekly | Weekly |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Ad-supported — better |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad, iPod |
| Requires iOS | 15 | 12.0 — better |
| Further details — not scored | ||
| Size | 10 MB | 44 MB |
| Age rating | +4 | 12+ |
| Developer | Erik Wegener | Marvin Marz |
Customer experience
One Brain
ImagineThat!
Bugs and requests
One Brain
Reported bugs
3 issues- Incorrect registering of correct answers
- Crashes and freezes on certain devices
- Keyboard controls not working as expected
Requested features
3 requests- Adjustable difficulty levels
- More game modes and variations
- Option to disable ads or pay for ad-free version
ImagineThat!
Not enough reviews yet to summarise bugs or requests.
In-app purchases
One Brain
- Remove Ads$0.99
ImagineThat!
No in-app purchases
