# Quick Math for Watch vs A544DSP

The clearest difference is price: A544DSP at Free against Quick Math for Watch's $5.99. A544DSP also leads on update cadence (every 5 weeks vs every 41 months) and iOS requirement (9.0 vs 15.0). On ads, in-app purchases and device support there is nothing between them.

A544DSP is free to download; Quick Math for Watch costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Quick Math for Watch ships an update every 41 months, A544DSP every 5 weeks. The most recent releases landed on October 1, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Quick Math for Watch | A544DSP |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 41 months | **Every 5 weeks** |
| Size | 2 MB | 21 MB |
| Requires iOS | 15.0 | **9.0** |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Khuong Pham](https://appshunter.io/developer/1593197909) | [杏生 卢](https://appshunter.io/developer/1094592555) |

## What reviewers say

### Quick Math for Watch

[App page](https://appshunter.io/ios/app/quick-math-for-watch/id1485794967)

**In-app purchases:** none


### A544DSP

[App page](https://appshunter.io/ios/app/a544dsp/id1670363148)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Quick Math for Watch free?

Quick Math for Watch costs $5.99, with no in-app purchases.

### Is A544DSP free?

A544DSP is free to download, with no in-app purchases.

### Do Quick Math for Watch or A544DSP have ads?

Neither Quick Math for Watch nor A544DSP shows ads.

### Which is updated more often, Quick Math for Watch or A544DSP?

Quick Math for Watch ships an update every 41 months, and A544DSP every 5 weeks. Most recently, Quick Math for Watch was updated on October 1, 2026 and A544DSP on September 30, 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.*