One Brain vs DEFINED.
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?
DEFINED.
This game challenges you to find the correct word based on its definition from a list of options. Points decrease over time, and incorrect choices disappear, adding a strategic element to guessing. It offers multiple game modes to test your vocabulary and quick thinking.
- Guess words from definitions
- Timed scoring
- Disappearing incorrect options
- Daily Challenge mode
- Classic and Hardcore modes
- Head-to-Head challenges
- Personal dictionary building
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You know the word. It's right there. On the tip of your tongue. DEFINED flips the dictionary. You see the definition ... now find the word hiding in a wall of 15 options. But here's the catch: points tick down every second, and words start disappearing. Do you guess early for maximum points? Or wait until the choices narrow and take the safe bet? HOW IT WORKS -See a definition, scan 15 words -Points count down from 100 to 0 -Incorrect words vanish at intervals -Tap to guess. Right or wrong, you'll learn something new! SIX WAYS TO PLAY -Daily Challenge - 7 words, one shot, global leaderboard -Classic - Endless rounds to sharpen your vocabulary -Hardcore - One wrong guess and it's game over! -Speed - 5 seconds! 10 words! Roll up your sleeves. -Revenge - Replay words you've missed -Head-to-Head Challenges - Create a 7-word set and challenge your friends! -Theme mode - Curated word lists for fun themes! THE DETAILS -5,600+ words from diverse categories -Clean typewriter aesthetic -Hear word pronunciations with text-to-speech -Track your stats and build your profile -Build your personal dictionary as you play -No ads. No subscriptions. Pay once and play forever! Built for word lovers and trivia nerds! Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://pokeitforward.com/privacy/defined
Screenshots
Verdict
The clearest difference is price: One Brain at Free against DEFINED.'s $1.99. One Brain also leads on ratings volume (297 vs 6). DEFINED.'s advantage is rating (5.0 vs 4.4) and review sentiment (100% vs 59%). On update cadence, device support and iOS requirement 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
One Brain is free to download; DEFINED. costs $1.99 up front. One Brain sells 1 one-off in-app purchase. DEFINED. asks for nothing beyond the download.
DEFINED. 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 6, so its average is the more settled of the two. Written reviews point the same way: 59% of One Brain's written reviews are positive against 100% of DEFINED.'s.
One Brain ships an update weekly, DEFINED. every 8 days. Both last shipped on October 13, 2026.
| Parameter | One Brain | DEFINED. |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 4.4 (297 ratings) | 5.0 (6 ratings) — better |
| Positive reviews | 58.6% of reviews | 100.0% of reviews — better |
| Number of ratings | 297 — better | 6 |
| Update frequency | Weekly — better | Every 8 days |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Best chart rank | — | #77 — better |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad, iPod |
| Requires iOS | 15 — better | 15.1 |
| Further details — not scored | ||
| Size | 10 MB | 27 MB |
| Age rating | +4 | 4+ |
| Developer | Erik Wegener | Doug Hicks |
Customer experience
One Brain
DEFINED.
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
DEFINED.
Not enough reviews yet to summarise bugs or requests.
In-app purchases
One Brain
- Remove Ads$0.99
DEFINED.
No in-app purchases
