Size test vs NeuroNudge
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.
NeuroNudge
Enhance your memory and focus with a collection of engaging puzzles and challenges. This app adapts to your skill level, offering daily tasks and detailed progress tracking to keep your mind sharp. Compete with others on public leaderboards and unlock achievements for continuous improvement.
- Multiple cognitive skill games
- Progress tracking with statistics
- Daily brain challenges
- Adaptive difficulty
- Achievement system
- Public leaderboards
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NeuroNudge is a brain training app designed to improve your cognitive abilities through engaging puzzles and challenges. FEATURES: • Multiple brain training games targeting different cognitive skills. • Track your progress with detailed statistics. • Daily challenges to keep your mind sharp. • Adaptive Difficulty: Games adjust to your skill level for optimal challenge. • Achievement system to motivate continuous improvement. • Beautiful, user-friendly interface designed for all ages. • Public leaderboards so you can compete with friends and fellow brain trainers. Exercise your brain with fun mini-games that target memory, attention, problem-solving, and more. NeuroNudge adapts to your skill level, providing the perfect challenge to help you improve. Track your progress over time with detailed statistics and watch as your cognitive abilities improve. Complete achievements to unlock rewards and stay motivated on your brain training journey. Start your brain training routine today with NeuroNudge! Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is price: NeuroNudge at Free against Size test's $0.99. NeuroNudge also leads on update cadence (every 4 days vs every 10 months). Size test's advantage is in-app purchases (none vs 2) and ads (none vs shown). On 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
NeuroNudge is free to download; Size test costs $0.99 up front. NeuroNudge sells 1 in-app purchase, starting at $5.99 per month. Size test asks for nothing beyond the download.
Size test ships an update every 10 months, NeuroNudge every 4 days. The most recent releases landed on October 15, 2026 and October 7, 2026 respectively.
| Parameter | Size test | NeuroNudge |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | — | 4.8 (4 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 4 — better |
| Update frequency | Every 10 months | Every 4 days — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPad | iPhone, iPad — better |
| Requires iOS | 14.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 1 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Viacheslav Romanenko | Benjamin Kvello-Hansen |
In-app purchases
Size test
No in-app purchases
NeuroNudge
- Ad‑Free NeuroNudge - Monthly2 variants$5.991 Month









