# Amp Calculator vs Sally POS

The clearest difference is update cadence: Sally POS at every 6 weeks against Amp Calculator's every 11 months. Amp Calculator's advantage is iOS requirement (11.0 vs 16.4). 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.

Amp Calculator ships an update every 11 months, Sally POS every 6 weeks. The most recent releases landed on October 25, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Amp Calculator | Sally POS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 6 weeks** |
| Size | 12 MB | 123 MB |
| Requires iOS | **11.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [iLeaseWorks, LLC](https://appshunter.io/developer/719765837) | [Sally LTD](https://appshunter.io/developer/1531501412) |

## What reviewers say

### Amp Calculator

[App page](https://appshunter.io/ios/app/amp-calculator/id1500809162)

**Features:** macOS Compatibility

**In-app purchases:** none


### Sally POS

[App page](https://appshunter.io/ios/app/sally-pos/id6446204909)

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

**In-app purchases:** none


## Frequently asked questions

### Is Amp Calculator free?

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

### Is Sally POS free?

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

### Do Amp Calculator or Sally POS have ads?

Neither Amp Calculator nor Sally POS shows ads.

### Which is updated more often, Amp Calculator or Sally POS?

Amp Calculator ships an update every 11 months, and Sally POS every 6 weeks. Most recently, Amp Calculator was updated on October 25, 2026 and Sally POS 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.*