NBack for iPad Lite vs Size test
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NBack for iPad Lite
This application helps improve mental acuity by training working memory through a sequence-matching game. Users are presented with stimuli and must recall the item from a specified number of steps prior in the sequence. It offers a simplified version of a more comprehensive training tool.
- Working memory training
- Sequence matching game
- Adjustable difficulty (1-2 back)
- Improves mental ability
- Lite version of full app
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Stimulus => Sensory Memory => Working Memory => Long-Term Memory If you want to sharpen your mental ability, you should train your working memory. Train your working memory with 'NBack'. *NBack:The current answer matches the one from N steps earlier in the sequence. 'NBack for iPad Lite' is Lite Version of 'NBack for iPad'. Full Version: 1'Back --- 10'Back Lite Version: 1'Back --- 2'Back
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.
Verdict
The clearest difference is price: NBack for iPad Lite at Free against Size test's $0.99. Size test's advantage is ads (none vs shown) and iOS requirement (14.0 vs 18.2). On update cadence, in-app purchases and 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
NBack for iPad Lite is free to download; Size test costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
NBack for iPad Lite ships an update every 12 months, Size test every 10 months. The most recent releases landed on October 6, 2026 and September 30, 2026 respectively.
| Parameter | NBack for iPad Lite | Size test |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 4.3 (3 ratings) — better | — |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 12 months | Every 10 months — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPad | iPad |
| Requires iOS | 18.2 | 14.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Yasuyoshi Ota | Viacheslav Romanenko |
In-app purchases
NBack for iPad Lite
No in-app purchases
Size test
No in-app purchases
Questions
Is NBack for iPad Lite free?
Is Size test free?
Do NBack for iPad Lite or Size test have ads?
Which is updated more often, NBack for iPad Lite or Size test?
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