Comparison

StroopTest vs Phaze

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

Head to head
About

StroopTest

This app presents a classic psychology test where you identify the color of a word, measuring your reaction time. It offers multilingual support and visualizes your performance over time with graphs.

Highlights
  • Color-word association test
  • Reaction time measurement
  • Performance graphing
  • Multilingual support
  • Classic psychology experiment
Features
Read full description

When you read a word about a color your brain immediately things of the meaning. In this test it asks to select the color of the word. The time of your reaction will be measured and shown in the graph. Available in English, French, Spanish, German and Dutch.

About

Phaze

Features
Read full description

Unlock Peak Performance While Travelling with Phaze Phaze is your ultimate travel performance coach, designed to help you stay at your best, no matter where in the world you go. Created by leading chronobiologists and sleep experts, Phaze optimises your schedule, minimises jet lag, and ensures you’re mentally and physically prepared for the moments that matter. Key Features: - Personalised Activity Schedule - Phaze customises your daily itinerary based on your physiology and travel needs. By aligning your schedule with your body’s circadian rhythms, it optimises when to sleep, eat, and engage in activities- so you feel and perform your best in your new destination. - Jet Lag Management - Beat jet lag with science-backed strategies. Phaze’s proprietary algorithm, developed by chronobiologists, helps reset your internal clock. With an integrated light scanner, it guides your light exposure to accelerate your body’s adjustment, reducing fatigue and enhancing recovery. - Performance Planning - Have a big event, business meeting, or competition while travelling? Enter key dates, and Phaze will create a customised plan to ensure you’re at peak performance exactly when you need to be- whether it’s a presentation, race, or once-in-a-lifetime sightseeing experience. - User-Friendly Interface - Navigate your personalised schedule with ease. Make real-time adjustments, set reminders for crucial activities, and stay on top of your travel itinerary - all in one intuitive app. - Expert Travel Insights - Access science-backed tips on optimising energy levels, hydration, and recovery, so you can make the most of every trip. - Global Time Zone Support - Seamlessly manage your schedule across multiple time zones, ensuring you’re always prepared, no matter where you land. Download Phaze today and travel smarter. Minimise jet lag, maximise performance, and arrive ready to take on the world! This app integrates with Apple HealthKit.

Screenshots

StroopTest4 screens
Phaze4 screens

Verdict

The call

The clearest difference is price: Phaze at Free against StroopTest's $1.99. Phaze also leads on update cadence (every 6 weeks vs every 8 months). StroopTest's advantage is device support (4 vs 2) and iOS requirement (11.0 vs 16.2). On ads and in-app purchases 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

Phaze is free to download; StroopTest costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

StroopTest ships an update every 8 months, Phaze every 6 weeks. The most recent releases landed on August 1, 2026 and September 9, 2026 respectively.

Scorecard4 real differences · 5 level
StroopTest versus Phaze: the parameters behind the verdict, then further details
ParameterStroopTestPhaze
Price$1.99Free — better
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 8 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod, Apple TV — betteriPhone, iPad
Requires iOS11.0 — better16.2
Further details — not scored
Size36 MB60 MB
Age rating4+17+
DeveloperYellow RidersPhaze Shift Ltd

In-app purchases

None

StroopTest

No in-app purchases

None

Phaze

No in-app purchases

Questions

Is StroopTest free?
StroopTest costs $1.99, with no in-app purchases.
Is Phaze free?
Phaze is free to download, with no in-app purchases.
Do StroopTest or Phaze have ads?
Neither StroopTest nor Phaze shows ads.
Which is updated more often, StroopTest or Phaze?
StroopTest ships an update every 8 months, and Phaze every 6 weeks. Most recently, StroopTest was updated on August 1, 2026 and Phaze on September 9, 2026.

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