# PiCalculator! vs HP16C

The clearest difference is device support: HP16C at 2 against PiCalculator!'s —. HP16C also leads on iOS requirement (17.0 vs 26.0). On price and in-app purchases there is nothing between them.

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

## The numbers

| Metric | PiCalculator! | HP16C |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (3 ratings)](https://appshunter.io/ios/app/hp16c/id6761774728/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | — | Weekly |
| Monetization | — | Free |
| Size | 1 MB | 1 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | — | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Nicolo Campari](https://appshunter.io/developer/1692038826) | [Michael Doornbos](https://appshunter.io/developer/1891405652) |

## What reviewers say

### PiCalculator!

[App page](https://appshunter.io/ios/app/picalculator/id6450142995)

**In-app purchases:** none


### HP16C

[App page](https://appshunter.io/ios/app/hp16c/id6761774728)

This app faithfully recreates the legendary HP 16C Computer Scientist calculator, offering advanced hex arithmetic, bit manipulation, and base conversion. It features RPN, keystroke programming, and modern enhancements like a two-line display and haptic feedback.

**Highlights:** Full RPN calculator, Integer arithmetic (HEX, DEC, OCT, BIN), Configurable word size (1-64 bits), Complete bit operations, Keystroke programming, Two-line display, Haptic feedback

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

**In-app purchases:** none


## Frequently asked questions

### Is PiCalculator! free?

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

### Is HP16C free?

HP16C is free to download, with no in-app purchases.

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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.*