Comparison

Size test vs Memory Test & Brain Training

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

Head to head
About

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.

About

Memory Test & Brain Training

This app offers 10 scientific memory tests and brain training exercises to help you understand and improve your cognitive abilities. Track your progress with detailed scores, profiles, and trend charts. Learn effective memory techniques and unlock achievements.

Highlights
  • 10 scientific memory test modes
  • Digit span and spatial memory tests
  • Progress tracking and memory profile
  • Science-backed memory technique articles
  • Offline functionality
  • Privacy-focused, local data storage
Features
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Memorix is a complete memory testing and brain training app with 10 scientific test modes. Measure your digit span, spatial memory, working memory, and more — then track your improvement over time. Built on real cognitive science assessments (WAIS Digit Span, Corsi Block, N-Back), Memorix gives you the tools to understand and improve your memory capacity — completely free. 10 MEMORY TEST MODES - Digit Span Forward — memorize and recall number sequences - Digit Span Backward — recall digits in reverse order (working memory) - Digit Span Sequencing — sort digits in ascending order from memory - Visual Spatial (Corsi Block) — tap grid blocks in the correct sequence - Color Sequence (Simon) — remember growing color patterns - Word Memory — memorize and recall word lists - Image Memory — match pairs from memory - Pattern Recall — recreate grid patterns from memory - Number Chain (N-Back) — running memory stream challenge - Face & Name — associate faces with names TRACK YOUR PROGRESS - Overall Memory Score (0-1000) with rank system - 5-axis Memory Profile radar chart - Personal bests for every mode - 30-day trend charts - Practice streak with calendar heatmap LEARN & IMPROVE - 7 science-backed articles on memory techniques - Chunking, Method of Loci, Spaced Repetition, and more - 12 achievements to unlock PRIVACY FIRST All data stored locally on your device. No account required, no personal data collected. Works 100% offline. This is a screening and educational tool, not a medical device and not a diagnosis. Download Memorix today and discover your true memory span!

Screenshots

Memory Test & Brain Training4 screens

Verdict

The call

The clearest difference is price: Memory Test & Brain Training at Free against Size test's $0.99. Memory Test & Brain Training also leads on update cadence (every 2 months vs every 10 months) and device support (3 vs 1). On ads, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Memory Test & Brain Training is free to download; Size test costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Size test ships an update every 10 months, Memory Test & Brain Training every 2 months. The most recent releases landed on September 30, 2026 and September 25, 2026 respectively.

Scorecard3 real differences · 7 level
Size test versus Memory Test & Brain Training: the parameters behind the verdict, then further details
ParameterSize testMemory Test & Brain Training
Price$0.99Free — better
Rating—3.3 (3 ratings) — better
Positive reviews—0.0% of reviews
Number of ratings—3 — better
Update frequencyEvery 10 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPadiPhone, iPad, iPod — better
Requires iOS14.0 — better15.0
Further details — not scored
Size1 MB50 MB
Age rating4+4+
DeveloperViacheslav RomanenkoGunawan Santoso

In-app purchases

None

Size test

No in-app purchases

None

Memory Test & Brain Training

No in-app purchases

Questions

Is Size test free?
Size test costs $0.99, with no in-app purchases.
Is Memory Test & Brain Training free?
Memory Test & Brain Training is free to download, with no in-app purchases.
Do Size test or Memory Test & Brain Training have ads?
Neither Size test nor Memory Test & Brain Training shows ads.
Which is updated more often, Size test or Memory Test & Brain Training?
Size test ships an update every 10 months, and Memory Test & Brain Training every 2 months. Most recently, Size test was updated on September 30, 2026 and Memory Test & Brain Training on September 25, 2026.

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