# N2x3x5x7x vs Smart Calc+

The clearest difference is update cadence: Smart Calc+ at every 3 days against N2x3x5x7x's every 23 months. N2x3x5x7x's advantage is iOS requirement (9.0 vs 13.4). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

N2x3x5x7x ships an update every 23 months, Smart Calc+ every 3 days. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | N2x3x5x7x | Smart Calc+ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 23 months | **Every 3 days** |
| Size | 15 MB | 22 MB |
| Requires iOS | **9.0** | 13.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DaliFermat Ltd](https://appshunter.io/developer/1131359876) | [Rahman Usta](https://appshunter.io/developer/1750311538) |

## What reviewers say

### N2x3x5x7x

[App page](https://appshunter.io/ios/app/n2x3x5x7x/id1396016488)

**Features:** macOS Compatibility

**In-app purchases:** none


### Smart Calc+

[App page](https://appshunter.io/ios/app/smart-calc-plus/id6504203262)

**In-app purchases:** none


## Frequently asked questions

### Is N2x3x5x7x free?

N2x3x5x7x is free to download, with no in-app purchases.

### Is Smart Calc+ free?

Smart Calc+ is free to download, with no in-app purchases.

### Do N2x3x5x7x or Smart Calc+ have ads?

Neither N2x3x5x7x nor Smart Calc+ shows ads.

### Which is updated more often, N2x3x5x7x or Smart Calc+?

N2x3x5x7x ships an update every 23 months, and Smart Calc+ every 3 days. Most recently, N2x3x5x7x was updated on October 26, 2026 and Smart Calc+ on October 27, 2026.

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