# All Units vs Nautical Calculator.

The clearest difference is in-app purchases: All Units at none against Nautical Calculator.'s 1. All Units also leads on update cadence (every 3 days vs every 5 months). Nautical Calculator.'s advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Nautical Calculator. sells 1 one-off in-app purchase. All Units asks for nothing beyond the download.

All Units ships an update every 3 days, Nautical Calculator. every 5 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | All Units | Nautical Calculator. |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/all-units/id1663552827/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 3 days** | Every 5 months |
| Monetization | Ad-supported | — |
| Size | 7 MB | 43 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Vladyslav Yarmak](https://appshunter.io/developer/1456545549) | [Nanjibhai Gorasiya](https://appshunter.io/developer/1834066312) |

## What reviewers say

### All Units

[App page](https://appshunter.io/ios/app/all-units/id1663552827)

This free utility app simplifies unit conversions for various measurements, saving time for technicians, students, and everyday users. It offers a wide range of conversion categories to make calculations easy and accurate.

**Highlights:** Unit conversion, Volume, Length, Mass, Temperature, Velocity, Time

**Features:** Vision Pro support

**In-app purchases:** none


### Nautical Calculator.

[App page](https://appshunter.io/ios/app/nautical-calculator/id6755711720)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime premium | $12.99 | one-time |


## Frequently asked questions

### Is All Units free?

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

### Is Nautical Calculator. free?

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

### Do All Units or Nautical Calculator. have ads?

All Units shows ads; Nautical Calculator. does not.

### Which is updated more often, All Units or Nautical Calculator.?

All Units ships an update every 3 days, and Nautical Calculator. every 5 months. Most recently, All Units was updated on November 3, 2026 and Nautical Calculator. on October 30, 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.*