# Ultra N Back vs NBackCalc

The clearest difference is ads: NBackCalc at none against Ultra N Back's shown. NBackCalc also leads on update cadence (every 2 days vs every 4 days). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Ultra N Back sells 2 in-app purchases, starting at $0.99 per month and NBackCalc sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Ultra N Back ships an update every 4 days, NBackCalc every 2 days. The most recent releases landed on October 10, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Ultra N Back | NBackCalc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 days | **Every 2 days** |
| Size | 57 MB | 1 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ayumu Kawahara](https://appshunter.io/developer/1835186601) | [YOSHINORI KONNO](https://appshunter.io/developer/1883074860) |

## What reviewers say

### Ultra N Back

[App page](https://appshunter.io/ios/app/ultra-n-back-brain-training/id6751448185)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Plan | $0.99 | per month |
| Unlimited Plan | $1.99 | per month |


### NBackCalc

[App page](https://appshunter.io/ios/app/nbackcalc-working-memory/id6760832395)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 開発者を応援する | $0.99 | one-time |


## Frequently asked questions

### Is Ultra N Back free?

Ultra N Back is free to download, with in-app purchases available.

### Is NBackCalc free?

NBackCalc is free to download, with in-app purchases available.

### Do Ultra N Back or NBackCalc have ads?

Ultra N Back shows ads; NBackCalc does not.

### Which is updated more often, Ultra N Back or NBackCalc?

Ultra N Back ships an update every 4 days, and NBackCalc every 2 days. Most recently, Ultra N Back was updated on October 10, 2026 and NBackCalc on October 28, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*