# Units vs Pilot ToolBox

The clearest difference is review sentiment: Pilot ToolBox at 100% against Units's 45%. Units's advantage is price (Free vs $2.99) and rating (4.9 vs 3.0). On update cadence and in-app purchases there is nothing between them.

Units is free to download; Pilot ToolBox costs $2.99 up front. Units sells 3 in-app purchases, starting at $0.99 per month and Pilot ToolBox sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Units holds the better App Store score, 4.9 against 3.0. That said, the two scores are not equally well evidenced: Units has 261 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 45% of Units's written reviews are positive against 100% of Pilot ToolBox's, so the app with the better star average is not the one people write more warmly about.

Units ships an update every 5 weeks, Pilot ToolBox every 2 months. The most recent releases landed on September 23, 2026 and August 29, 2026 respectively.

## The numbers

| Metric | Units | Pilot ToolBox |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[4.9 (261 ratings)](https://appshunter.io/ios/app/units-unit-converter/id1527329982/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/pilot-toolbox/id1534549323/reviews) |
| Number of ratings | **261** | 2 |
| Positive reviews | 45.5% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 3 MB | 73 MB |
| Requires iOS | **15.0** | 18.6 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Andreas Maier](https://appshunter.io/developer/454364359) | [Bahadir ARSLAN](https://appshunter.io/developer/1445887121) |

## What reviewers say

### Units

[App page](https://appshunter.io/ios/app/units-unit-converter/id1527329982)

Easily convert between a wide range of measurement units and currencies. Features a clear and simple interface for quick conversions of length, mass, volume, speed, and more. Supports popular currencies and common units for everyday use.

**Highlights:** Extensive unit conversions, Multiple currency support, Easy and clear handling, Converts length, mass, volume, Supports speed, area, pressure, Converts time and temperature

**Features:** Family Sharing, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $0.99 | per month |
| Yearly | $4.99 | per year |
| One time purchase | $9.99 | one-time |


### Pilot ToolBox

[App page](https://appshunter.io/ios/app/pilot-toolbox/id1534549323)

This app simplifies flight planning and time management for pilots. It offers tools to calculate rest periods, off days, flight hours, and night flying times, designed by pilots for pilots to enhance efficiency and schedule control.

**Highlights:** Rest Time Calculator for multi-crew flights, Off Day Calculator for planning personal time, 24-hour Time Calculator with history, Night Time Calculator for flight compliance, User-friendly interface for pilots

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Rest Time Calculator | $1.99 | one-time |


## Frequently asked questions

### Is Units free?

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

### Is Pilot ToolBox free?

Pilot ToolBox costs $2.99, and also offers in-app purchases.

### Which has better reviews, Units or Pilot ToolBox?

Units is rated higher. Units averages 4.9 out of 5 from 261 ratings, while Pilot ToolBox averages 3.0 from 2 ratings.

### Do Units or Pilot ToolBox have ads?

Pilot ToolBox shows ads; Units does not.

### Which is updated more often, Units or Pilot ToolBox?

Units ships an update every 5 weeks, and Pilot ToolBox every 2 months. Most recently, Units was updated on September 23, 2026 and Pilot ToolBox on August 29, 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.*