NBack for iPad vs Callan App
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NBack for iPad
This application offers a cognitive training tool designed to enhance working memory and mental acuity. It utilizes the N-Back task, a scientifically recognized method for improving cognitive abilities. Users can train their memory through various levels of difficulty.
- Working memory training
- N-Back task implementation
- Multiple difficulty levels (1'Back to 10'Back)
- Cognitive ability enhancement
- iPad optimized
Read full descriptionHide full description
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. 1'Back --- 10'Back
Callan App
This app provides audiobooks and eBooks for students enrolled in Callan Accredited Schools. It offers practice areas for recording answers, dictations, and exercises to enhance language skills. Courses are available for General English, Business English, Children's English, and General Spanish.
- Audiobook and eBook access
- Question and Answer recording
- Dictation practice
- Exercise testing
- Multiple language courses
Read full descriptionHide full description
The Callan App is only available to students at Callan Accredited Schools. The App lets you listen to the audio books and read the eBooks you have bought at your school. You can also easily practise your skills wherever you are with the "Callan Student Practice Area": - record yourself in the "Question and Answer" section - practise your writing in the "Dictations" section - test yourself in the "Exercises" section Please contact the Reception at your school and ask them to register you. The Callan Method publishes courses for General English, Business English, Children's English and also General Spanish.
Screenshots
Verdict
The clearest difference is review sentiment: NBack for iPad at 50% against Callan App's 0%. NBack for iPad also leads on rating (5.0 vs 1.0). Callan App's advantage is price (Free vs $2.99) and update cadence (every 6 weeks vs every 12 months). On ratings volume, 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
Callan App is free to download; NBack for iPad costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
NBack for iPad holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews point the same way: 50% of NBack for iPad's written reviews are positive against 0% of Callan App's.
NBack for iPad ships an update every 12 months, Callan App every 6 weeks. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.
| Parameter | NBack for iPad | Callan App |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 5.0 (1 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 50.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 1 | 1 |
| Update frequency | Every 12 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.2 | 14.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Yasuyoshi Ota | Callan Online Ltd |
Customer experience
NBack for iPad
Callan App
In-app purchases
NBack for iPad
No in-app purchases
Callan App
No in-app purchases
Questions
Is NBack for iPad free?
Is Callan App free?
Which has better reviews, NBack for iPad or Callan App?
Do NBack for iPad or Callan App have ads?
Which is updated more often, NBack for iPad or Callan App?
Other comparisons
