# x36 vs HP16C

The clearest difference is price: HP16C at Free against x36's $0.99. HP16C also leads on update cadence (weekly vs every 2 months). x36's advantage is rating (5.0 vs 4.3) and iOS requirement (12.0 vs 17.0). On ratings volume, ads, in-app purchases and device support there is nothing between them.

HP16C is free to download; x36 costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

x36 holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 2 and 4 respectively.

x36 ships an update every 2 months, HP16C weekly. Both last shipped on October 24, 2026.

## The numbers

| Metric | x36 | HP16C |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/x36/id1443849416/reviews)** | [4.3 (4 ratings)](https://appshunter.io/ios/app/hp16c/id6761774728/reviews) |
| Number of ratings | 2 | **4** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Paid | **Free** |
| Size | 1 MB | 1 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Carl Cook](https://appshunter.io/developer/897666025) | [Michael Doornbos](https://appshunter.io/developer/1891405652) |

## What reviewers say

### x36

[App page](https://appshunter.io/ios/app/x36/id1443849416)

This app offers a powerful scientific and engineering calculator with advanced features like programmability, multiple number bases, and statistical functions. It emulates the functionality of calculators from the 70s and 80s, providing over 100 functions for complex calculations.

**Highlights:** Programmability with 1000 steps, Trigonometric functions with selectable units, Statistical functions and linear regression, Four number bases (Decimal, Hex, Octal, Binary), Metric-English conversions, Fraction operations, Over 100 functions

**Features:** macOS Compatibility

**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 x36 free?

x36 costs $0.99, with no in-app purchases.

### Is HP16C free?

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

### Which has better reviews, x36 or HP16C?

x36 is rated higher. x36 averages 5.0 out of 5 from 2 ratings, while HP16C averages 4.3 from 4 ratings.

### Do x36 or HP16C have ads?

Neither x36 nor HP16C shows ads.

### Which is updated more often, x36 or HP16C?

x36 ships an update every 2 months, and HP16C weekly. Most recently, x36 was updated on October 24, 2026 and HP16C on October 24, 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.*