Comparison

AtopOf vs Driver Reaction Timer

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

Head to head
About

AtopOf

Features
Read full description

How high can you go? When it comes to altitude it is always just numbers. Wouldn't it be much nicer to compare your sealevel with mountain-peaks? Finally thats possible with AtopOf.

About

Driver Reaction Timer

Features
Read full description

Train like a real driver and test your reaction time! Do you have what it takes to react instantly to start lights? With Driver Reaction Timer, challenge your reflexes just like real racing drivers — from the moment the lights go out, every millisecond counts. This game simulates a realistic race start sequence with a visual light system. Tap the screen as soon as the lights turn off, and see how fast you are! Whether you're just curious or want to improve your mental response time, this app is both fun and addictive. How it works: - Watch the start lights turn on one by one… - Wait for them to go out. - Tap as quickly as possible when the lights disappear. - Your reaction time is instantly displayed — try to beat your record! Features: - Simple and intuitive gameplay - Realistic race start sequence - Instant reaction time feedback - Great for racing fans, athletes, gamers, and reflex training Why use this app? Whether you're a casual gamer, a racing enthusiast, or someone who just wants to train their brain, Driver Reaction Timer is a quick and fun way to test and improve your reflexes. Share your times with friends and challenge them to beat you! Perfect for: - Motorsport fans - Gamers who want better reflexes - Anyone preparing for reaction-based challenges - People curious about their reaction speed Download now and see if you can match the reflexes of real drivers!

Screenshots

AtopOf4 screens
Driver Reaction Timer3 screens

Verdict

The call

The clearest difference is price: Driver Reaction Timer at Free against AtopOf's $0.99. Driver Reaction Timer also leads on update cadence (every 4 months vs every 93 months) and iOS requirement (13.0 vs 17.2). On ads, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Driver Reaction Timer is free to download; AtopOf costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

AtopOf ships an update every 93 months, Driver Reaction Timer every 4 months. The most recent releases landed on October 26, 2026 and October 9, 2026 respectively.

Scorecard3 real differences · 3 level
AtopOf versus Driver Reaction Timer: the parameters behind the verdict, then further details
ParameterAtopOfDriver Reaction Timer
Price$0.99Free — better
Update frequencyEvery 93 monthsEvery 4 months — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.213.0 — better
Further details — not scored
Size13 MB19 MB
Age rating4+4+
DeveloperZoliTechHugo De Beys

In-app purchases

None

AtopOf

No in-app purchases

None

Driver Reaction Timer

No in-app purchases

Questions

Is AtopOf free?
AtopOf costs $0.99, with no in-app purchases.
Is Driver Reaction Timer free?
Driver Reaction Timer is free to download, with no in-app purchases.
Do AtopOf or Driver Reaction Timer have ads?
Neither AtopOf nor Driver Reaction Timer shows ads.
Which is updated more often, AtopOf or Driver Reaction Timer?
AtopOf ships an update every 93 months, and Driver Reaction Timer every 4 months. Most recently, AtopOf was updated on October 26, 2026 and Driver Reaction Timer on October 9, 2026.

Other comparisons