# Calculator vs Unit Converter

The clearest difference is review sentiment: Unit Converter at 100% against Calculator's 70%. Unit Converter also leads on update cadence (weekly vs every 2 months) and rating (5.0 vs 4.6). Calculator's advantage is ratings volume (200 vs 42) and device support (3 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Calculator sells 4 in-app purchases, starting at $2.49 per month and Unit Converter sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Unit Converter holds the better App Store score, 5.0 against 4.6. Both are backed by a comparable volume of ratings — 200 and 42 respectively. Written reviews point the same way: 70% of Calculator's written reviews are positive against 100% of Unit Converter's.

Calculator ships an update every 2 months, Unit Converter weekly. The most recent releases landed on October 16, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Calculator | Unit Converter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (200 ratings)](https://appshunter.io/ios/app/calculator-basic-and-scientific/id1521827072/reviews) | **[5.0 (42 ratings)](https://appshunter.io/ios/app/unit-converter-omniconvert/id1602930764/reviews)** |
| Number of ratings | **200** | 42 |
| Positive reviews | 70.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Freemium | Free with in-app purchases |
| Size | 36 MB | 35 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Wuhan Ananta Technology Co., Ltd.](https://appshunter.io/developer/1508854889) | [Jonathan Chen](https://appshunter.io/developer/1602930766) |

## What reviewers say

### Calculator

[App page](https://appshunter.io/ios/app/calculator-basic-and-scientific/id1521827072)

This app combines basic, scientific, currency, and unit conversion tools into a single, powerful calculator. It offers features like history records, number speech, and seamless result inheritance across different calculator types for an efficient workflow.

**Highlights:** Basic and scientific calculations, Currency converter with 150+ currencies, Units converter for various measurements, History records with save, copy, and paste, Number speech for input accuracy, Seamless result inheritance across calculators, Offline usage and customizable themes

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Membership - 1 Month | $2.49 | per month |
| Premium Monthly Pro | $2.49 | per month |
| Premium Membership - 1 Week | $2.49 | per 7 days |
| Premium Membership - 1 Year | $26.99 | per year |


### Unit Converter

[App page](https://appshunter.io/ios/app/unit-converter-omniconvert/id1602930764)

This app provides a comprehensive suite of tools for unit and currency conversions, along with various calculators and scientific constants. It offers real-time exchange rates, works offline, and supports a wide range of categories. Enjoy a user-friendly experience with features like dark mode and no conversion limits.

**Highlights:** Unit conversions, Currency conversions, Real-time exchange rates, Offline functionality, Variety of calculators, Scientific constants, Dark mode

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OmniConvert Pro | $2.99 | one-time |


## Frequently asked questions

### Is Calculator free?

Calculator is free to download, with in-app purchases available.

### Is Unit Converter free?

Unit Converter is free to download, with in-app purchases available.

### Which has better reviews, Calculator or Unit Converter?

Unit Converter is rated higher. Calculator averages 4.6 out of 5 from 200 ratings, while Unit Converter averages 5.0 from 42 ratings.

### Do Calculator or Unit Converter have ads?

Both Calculator and Unit Converter show ads.

### Which is updated more often, Calculator or Unit Converter?

Calculator ships an update every 2 months, and Unit Converter weekly. Most recently, Calculator was updated on October 16, 2026 and Unit Converter on October 15, 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.*