Size test vs Exponential Growth Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Size test
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This app is designed to assess how quickly the user reacts to changes in the size of an object. Users can select one of the test modes: 'Increasing the object', 'Decreasing the object', 'Decreasing or increasing the object'. When the user observes a change in the size of an object, the user must break contact with the device screen. The recorded test time reflects the user's ability to perceive the change in object size. Once the test is completed, the results are tested for normality of distribution (Shapiro-Wilk test). If the values deviate from the law of normal distribution, the program analyzes the data sets, removes the worst value and adds an additional attempt. In the program settings you can select the number of attempts - from 10 to 30. The choice of the number of attempts depends on the performer's age and professional activity. In addition, in the program settings the user can save a backup copy of his measurements in JSON format anywhere (Save backup), add measurements from another device (Add backup), replace already saved measurements with new ones (Replace backup) or delete all data (Delete all data). This application is intended to be used by athletes and teachers in specialized educational institutions for scientific research.
Exponential Growth Calculator
Instantly solve math problems and prepare for exams with step-by-step solutions. Visualize your function's development graphically by entering initial values, growth rates, or time. Access curated learning videos and manage your solutions.
- Instant step-by-step solutions
- Graphical function development
- Curated learning videos
- Input feedback
- Solution management
- Anonymized data collection
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Get homework done instantly. Prepare for exams stress-free. Free, complete step-by-step solutions. Enter initial value, growth rate, factor or time and see how your function develops graphically. HOW IT WORKS Enter your values in the appropriate fields and get started. You’ll receive the solution instantly and can share it with friends or classmates. YOUR PERSONAL DATA We don’t need it. Only anonymized data is collected, for example: - which features are used - how many solutions are generated This helps us improve. No conclusions can be drawn about you. COSTS Everything is free to use. 24/7 access to your solutions. All steps remain fully available. If you need many solutions in a short time, various purchase options are available. EXTRAS - Overview of how your inputs affect growth and decay - curated learning videos - feedback for incorrect inputs - manage your own solutions - introduction to the app CONTACT Questions and feedback via Discord or directly in the app review.
Screenshots
Verdict
The clearest difference is price: Exponential Growth Calculator at Free against Size test's $0.99. Exponential Growth Calculator also leads on update cadence (fortnightly vs every 10 months) and device support (3 vs 1). Size test's advantage is in-app purchases (none vs 8). On ads and iOS requirement 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
Exponential Growth Calculator is free to download; Size test costs $0.99 up front. Exponential Growth Calculator sells 8 one-off in-app purchases. Size test asks for nothing beyond the download.
Size test ships an update every 10 months, Exponential Growth Calculator fortnightly. The most recent releases landed on May 19, 2026 and August 16, 2026 respectively.
| Parameter | Size test | Exponential Growth Calculator |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | — | 5.0 (2 ratings) — better |
| Number of ratings | — | 2 — better |
| Update frequency | Every 10 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 14.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 1 MB | 180 MB |
| Age rating | 4+ | 4+ |
| Developer | Viacheslav Romanenko | Glindemann, Sennoun, Langer GbR |
In-app purchases
Size test
No in-app purchases
Exponential Growth Calculator
- +30 User Tokens$0.29
- +1 Convenience Token / 6h, max. +2$0.59
- +2 Convenience Tokens / 6h, max. +4$0.99
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- +150 User Tokens$0.99
- +300 User Tokens$1.49
- +4 Convenience Tokens / 6h, max. +8$1.59
- Remove Ads$1.99
- Lifetime Access$1.99
Questions
Is Size test free?
Is Exponential Growth Calculator free?
Do Size test or Exponential Growth Calculator have ads?
Which is updated more often, Size test or Exponential Growth Calculator?
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