Keenly: Spot the Color
How sharp is your eye?
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
The stage went dark. Color is the only lit thing in the room - and a voice calls your rank.
One of these tiles is not the same color. Can you see which?
Keenly is a daily test of perception. Every day the whole world gets the same
puzzle: a grid of color tiles where exactly one is a slightly different shade.
Seven rounds, and the difference shrinks every time — down to the edge of human
vision (ΔE 1.2, near the just-noticeable-difference).
One mistake ends the run — that is what makes each find worth something. But a
lost run no longer costs you the day: every past puzzle is one tap away in the
archive.
WHAT YOU ACTUALLY LEARN
Not an invented percentile — your own data. The finest difference you have ever
resolved, your clear rate at each step of the ladder, and the exact point where
your eye starts to lose the thread.
• One run a day — the same puzzle worldwide, played on a dark stage where color is the only lit thing
• 7 rounds, sudden death, scored on how deep you get and how fast
• An announcer calls your rank out loud at the end — play itself stays silent
• Every share carries a challenge: same puzzle, beat this score
• An archive of every past puzzle — replays never touch your streak
• Daily streak with a freeze, so one busy day doesn't erase a month
• A shareable result card — spoiler-free, never shows a color
• Color-blind (CVD) mode — leans on lightness, and the answer stays in the same
place for every player, so the test is identical for everyone
• Quiet editorial design. No clutter, no candy.
Keenly+ unlocks Hard & Master practice, four color themes (including dark),
full history, and removes all ads — one payment, forever.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Keenly 1.2.0 - The Darkroom
- The stage went dark: game and result now sit on a neutral dark surround, so color is the only lit thing in the room.
- A voice calls your result: your rank announced, perfect and new-best celebrated. Play stays silent.
- The share card is now an identity card - each rank has its own color and line.
- Shares carry a challenge: "same puzzle, beat this score."
- Every sound re-cut with real attack, and it no longer pauses your music.
The developer, Hasegi Inc., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Location
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Location
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Hasegi Inc.
- Size
- 31.8 MB
- Category
- Puzzle
- Compatibility
Requires iOS 13.0 or later.
- iPhone
Requires iOS 13.0 or later. - iPad
Requires iPadOS 13.0 or later. - iPod touch
Requires iOS 13.0 or later. - Mac
Requires macOS 11.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English and Korean
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
- Keenly Pro $3.99
- Copyright
- © 2026 Hasegi Inc.