# Calcsharp Pro vs PFD Calc

The clearest difference is price: PFD Calc at Free against Calcsharp Pro's $1.99. Calcsharp Pro's advantage is ads (none vs shown) and update cadence (every 2 days vs every 5 weeks). On in-app purchases, device support and iOS requirement there is nothing between them.

PFD Calc is free to download; Calcsharp Pro costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Calcsharp Pro ships an update every 2 days, PFD Calc every 5 weeks. The most recent releases landed on September 22, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Calcsharp Pro | PFD Calc |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 2 days** | Every 5 weeks |
| Size | 4 MB | 14 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nikola Stepan](https://appshunter.io/developer/398370680) | [Kazuhisa Kobayashi](https://appshunter.io/developer/1580882000) |

## What reviewers say

### Calcsharp Pro

[App page](https://appshunter.io/ios/app/calcsharp-pro/id1644401194)

**Features:** Vision Pro support

**In-app purchases:** none


### PFD Calc

[App page](https://appshunter.io/ios/app/pfd-calc-prime-factorization/id6737405828)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Calcsharp Pro free?

Calcsharp Pro costs $1.99, with no in-app purchases.

### Is PFD Calc free?

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

### Do Calcsharp Pro or PFD Calc have ads?

PFD Calc shows ads; Calcsharp Pro does not.

### Which is updated more often, Calcsharp Pro or PFD Calc?

Calcsharp Pro ships an update every 2 days, and PFD Calc every 5 weeks. Most recently, Calcsharp Pro was updated on September 22, 2026 and PFD Calc on October 5, 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.*