Reaction Speed Test Pro vs White Nightmare
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Reaction Speed Test Pro
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The task is pretty simple. You will see a gray button on a screen. In a few seconds, it will become green. Try to press it as fast as you can and, we will collect information about your reaction. Four different game modes that definitely will improve your reaction time speed. This is the most advanced reaction test in App Store. Compare your results with other player and see worldwide average reaction speed value.
White Nightmare
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Simple! Find the pure white color blocks. It is very hard, you hard to see which one is true white color.
Screenshots
Verdict
The clearest difference is ads: Reaction Speed Test Pro at none against White Nightmare's shown. Reaction Speed Test Pro also leads on update cadence (every 2 days vs every 16 months) and price ($0.99 vs $1.99). On in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Reaction Speed Test Pro costs $0.99 and White Nightmare $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Reaction Speed Test Pro ships an update every 2 days, White Nightmare every 16 months. The most recent releases landed on October 11, 2026 and October 21, 2026 respectively.
| Parameter | Reaction Speed Test Pro | White Nightmare |
|---|---|---|
| Price | $0.99 β better | $1.99 |
| Update frequency | Every 2 days β better | Every 16 months |
| Ads | No β better | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 β better | 15.6 |
| Further details β not scored | ||
| Size | 6 MB | 90 MB |
| Age rating | 4+ | 4+ |
| Developer | Anatoliy Voropay | Oscar Tsang |
In-app purchases
Reaction Speed Test Pro
No in-app purchases
White Nightmare
No in-app purchases
Questions
Is Reaction Speed Test Pro free?
Is White Nightmare free?
Do Reaction Speed Test Pro or White Nightmare have ads?
Which is updated more often, Reaction Speed Test Pro or White Nightmare?
Other comparisons
