Comparison

色差测试 vs WhenRedTap

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

色差测试

Features
Read full description

对自己的眼睛很自信? 快来挑战自己的视觉极限吧! 你要做的就是不断找出那个不同的颜色,不断闯关,突破自我!

About

WhenRedTap

Test your reaction time with engaging stopwatch and agility games. Compete on leaderboards and enjoy classic arcade fun. Perfect for quick challenges and improving reflexes.

Highlights
  • Reaction speed testing
  • Agility games
  • Leaderboard competition
  • Whack-a-Mole mini-game
  • Milliseconds precision tracking
Features
Read full description

Remember racing friends on a digital watch? Red Light Reflex turns that into a set of reaction games: tap the instant the screen turns green and find out how fast your nerves really are. SEVEN MODES, UNDER A MINUTE EACH • Green Light — wait on red, tap on green. Average of 5 rounds. • Stop or Go — tap on green, hold back on red and yellow. • Bubble Pop — the whole grid lights up. Pop every light. • Lights Out — five red lights go out. Launch like an F1 driver. • Stopwatch · Quick Split — start, stop, as fast as you can. • Stopwatch · Exactly 1.00 — stop at exactly one second. The digits vanish after half a second. • Stopwatch · Tap Burst — how many taps in 5 seconds? DAILY CHALLENGE One mode a day, the same random sequence for everyone in the world, first try only. Keep your streak and see where you rank. HONEST TIMING Measured from the frame the light actually appears to the moment your finger touches down, with 120 Hz ProMotion support. Waits are truly random — no rhythm to guess — and anything under 100 ms is a false start. LEADERBOARDS AND BADGES • Game Center leaderboards plus a daily board; weekly and monthly boards in the app • 20 badges to collect • Challenge friends directly on iOS 26 • React to other players’ scores with an emoji AND MORE • Six tiers: Overclocked, Lightning, Cheetah, Sharp, Human, Sloth • Skins: classic traffic lights or a retro seven-segment LCD • Light and dark mode • Share cards for your best results Green Light, Stop or Go and the Daily Challenge are free forever. Other modes can be bought one by one, or played free for 30 minutes after watching an ad. Pro unlocks every mode and skin — including future ones — with no ads. Terms of Use: https://redstop.netlify.app/terms Privacy Policy: https://redstop.netlify.app/privacy

Screenshots

色差测试2 screens
WhenRedTap4 screens

Verdict

The call

The clearest difference is in-app purchases: 色差测试 at none against WhenRedTap's 2. 色差测试 also leads on ads (none vs shown) and device support (3 vs 1). On price 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. WhenRedTap sells 2 one-off in-app purchases. 色差测试 asks for nothing beyond the download.

Scorecard4 real differences · 5 level
色差测试 versus WhenRedTap: the parameters behind the verdict, then further details
Parameter色差测试WhenRedTap
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequency—Every 4 days
AdsNo — betterYes
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS10.0 — better17.0
Further details — not scored
Size10 MB6 MB
Age rating4+4+
Developer华生 黄泽 王

In-app purchases

None

色差测试

No in-app purchases

2 purchases

WhenRedTap

One-time2
  • Remove Ads$0.99
  • Paid Unlock$0.99

Questions

Is 色差测试 free?
色差测试 is free to download, with no in-app purchases.
Is WhenRedTap free?
WhenRedTap is free to download, with in-app purchases available.
Do 色差测试 or WhenRedTap have ads?
WhenRedTap shows ads; 色差测试 does not.

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