# TinyWatchCalc vs Calc Pro

The clearest difference is ads: TinyWatchCalc at none against Calc Pro's shown. TinyWatchCalc also leads on iOS requirement (12.0 vs 18.0). Calc Pro's advantage is update cadence (monthly vs every 16 months). On price, 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.

TinyWatchCalc ships an update every 16 months, Calc Pro monthly. The most recent releases landed on October 14, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | TinyWatchCalc | Calc Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (5 ratings)](https://appshunter.io/ios/app/calc-pro-simple-and-useful/id1444681142/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 16 months | **Monthly** |
| Monetization | — | Ad-supported |
| Size | 9 MB | 8 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Peter Entwistle](https://appshunter.io/developer/955246260) | [Keita Nonaka](https://appshunter.io/developer/1252557006) |

## What reviewers say

### TinyWatchCalc

[App page](https://appshunter.io/ios/app/tinywatchcalc/id1030102319)

**Features:** macOS Compatibility

**In-app purchases:** none


### Calc Pro

[App page](https://appshunter.io/ios/app/calc-pro-simple-and-useful/id1444681142)

This powerful calculator handles complex equations and huge numbers with up to 15 digits of precision. It saves your calculation history, allowing you to reuse previous equations and answers. Access scientific functions like square root and logarithms easily with a swipe.

**Highlights:** Complex calculations, Huge number handling, Calculation history, Scientific functions, Dark Mode, Copy answer

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is TinyWatchCalc free?

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

### Is Calc Pro free?

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

### Do TinyWatchCalc or Calc Pro have ads?

Calc Pro shows ads; TinyWatchCalc does not.

### Which is updated more often, TinyWatchCalc or Calc Pro?

TinyWatchCalc ships an update every 16 months, and Calc Pro monthly. Most recently, TinyWatchCalc was updated on October 14, 2026 and Calc Pro on October 8, 2026.

---

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