# RPNu vs Smart Calc+

The clearest difference is update cadence: Smart Calc+ at every 3 days against RPNu's every 2 months. Smart Calc+ also leads on iOS requirement (13.4 vs 15.0). 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.

RPNu ships an update every 2 months, Smart Calc+ every 3 days. The most recent releases landed on November 11, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | RPNu | Smart Calc+ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 days** |
| Size | 49 MB | 22 MB |
| Requires iOS | 15.0 | **13.4** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Scott Johnson](https://appshunter.io/developer/580251998) | [Rahman Usta](https://appshunter.io/developer/1750311538) |

## What reviewers say

### RPNu

[App page](https://appshunter.io/ios/app/rpnu/id1195709318)

**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 RPNu free?

RPNu 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 RPNu or Smart Calc+ have ads?

Neither RPNu nor Smart Calc+ shows ads.

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

RPNu ships an update every 2 months, and Smart Calc+ every 3 days. Most recently, RPNu was updated on November 11, 2026 and Smart Calc+ on November 8, 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.*