# Function Calc vs Units

The clearest difference is ratings volume: Units at 9 against Function Calc's 3. Units also leads on iOS requirement (15.1 vs 18.6). On price, rating, ads 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.

On the App Store both sit at effectively the same score — 5.0 for Function Calc against 4.9 for Units. Both are backed by a comparable volume of ratings — 3 and 9 respectively.

## The numbers

| Metric | Function Calc | Units |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/function-calc/id1188227053/reviews)** | [4.9 (9 ratings)](https://appshunter.io/ios/app/units-conversion-calculator/id6761082020/reviews) |
| Number of ratings | 3 | **9** |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | — |
| Monetization | Free | Free |
| Size | 5 MB | 33 MB |
| Requires iOS | 18.6 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hugh Pelham](https://appshunter.io/developer/1188227052) | [Matys Bouziane](https://appshunter.io/developer/1785637310) |

## What reviewers say

### Function Calc

[App page](https://appshunter.io/ios/app/function-calc/id1188227053)

This app offers a powerful, programmable scientific calculator with graphing capabilities. It allows users to create custom functions, store equations, and perform complex calculations with ease. The interface features a visible tape display and supports dictation for statistical analysis.

**Highlights:** Programmable custom functions, Graphing capabilities, Tape display with edit/undo, Unit conversions (120+), Dictate calculations, Export graphs (PDF, PNG)

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

**In-app purchases:** none


### Units

[App page](https://appshunter.io/ios/app/units-conversion-calculator/id6761082020)

Instantly convert any unit with this comprehensive tool. It offers 57 categories, built-in calculators for finance and health, and size lookup tables for clothing and hardware. Enjoy offline functionality and a clean, ad-free experience.

**Highlights:** 57 conversion categories, Built-in calculators (currency, finance, health), Size lookup tables, Offline functionality, Conversion history, Favorites, Multi-language support

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

**In-app purchases:** none


## Frequently asked questions

### Is Function Calc free?

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

### Is Units free?

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

### Which has better reviews, Function Calc or Units?

Function Calc is rated higher. Function Calc averages 5.0 out of 5 from 3 ratings, while Units averages 4.9 from 9 ratings.

### Do Function Calc or Units have ads?

Neither Function Calc nor Units shows ads.

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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.*