# Calc Pro vs DozClock

The clearest difference is ads: DozClock at none against Calc Pro's shown. DozClock also leads on update cadence (every 2 weeks vs monthly). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

Calc Pro ships an update monthly, DozClock every 2 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Calc Pro | DozClock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (6 ratings)](https://appshunter.io/ios/app/calc-pro-simple-and-useful/id1444681142/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 2 weeks** |
| Monetization | Ad-supported | — |
| Size | 8 MB | 1 MB |
| Requires iOS | 18.0 | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Keita Nonaka](https://appshunter.io/developer/1252557006) | [Paul Rapoport](https://appshunter.io/developer/1892500767) |

## What reviewers say

### 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


### DozClock

[App page](https://appshunter.io/ios/app/dozclock/id6762022445)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Calc Pro free?

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

### Is DozClock free?

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

### Do Calc Pro or DozClock have ads?

Calc Pro shows ads; DozClock does not.

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

Calc Pro ships an update monthly, and DozClock every 2 weeks. Most recently, Calc Pro was updated on October 24, 2026 and DozClock on October 25, 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.*