# 01Converter vs Inspector.aero

The clearest difference is in-app purchases: 01Converter at none against Inspector.aero's 1. 01Converter also leads on iOS requirement (8.1 vs 16.6). Inspector.aero's advantage is update cadence (every 9 days vs every 9 months). On price, review sentiment, ads and monetization model there is nothing between them.

Both are free to download. Inspector.aero sells 1 one-off in-app purchase. 01Converter asks for nothing beyond the download.

01Converter ships an update every 9 months, Inspector.aero every 9 days. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | 01Converter | Inspector.aero |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/01converter/id334626954/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 94.4% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 9 days** |
| Monetization | Free | Free |
| Size | 11 MB | 58 MB |
| Requires iOS | **8.1** | 16.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Francesco Burelli](https://appshunter.io/developer/334626957) | [ADD Intelligence in Aviation](https://appshunter.io/developer/1600993006) |

## What reviewers say

### 01Converter

[App page](https://appshunter.io/ios/app/01converter/id334626954)

This app allows for easy conversion between binary, hexadecimal, octal, and decimal number systems. It also includes functions for bitwise operations like shifting and arithmetic operations such as adding or subtracting one. An optimized keyboard simplifies input for various number bases.

**Highlights:** Number system conversion (binary, hex, octal, decimal), Unicode conversion, Shift left function, Shift right function, Add 1 function, Subtract 1 function

**Features:** macOS Compatibility

**In-app purchases:** none


### Inspector.aero

[App page](https://appshunter.io/ios/app/inspectoraero/id1600993004)

Streamline aviation inspections with this app. It guides users through aircraft component checks, allows for condition assessment, photo documentation, and issue tracking. Facilitates team collaboration and provides real-time updates via a web portal.

**Highlights:** Guided inspection checklists, Asset condition assessment, Photo evidence capture, Open item tracking, Team collaboration, Real-time web portal updates

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Aviation Inspection | $23.99 | one-time |


## Frequently asked questions

### Is 01Converter free?

01Converter is free to download, with no in-app purchases.

### Is Inspector.aero free?

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

### Do 01Converter or Inspector.aero have ads?

Neither 01Converter nor Inspector.aero shows ads.

### Which is updated more often, 01Converter or Inspector.aero?

01Converter ships an update every 9 months, and Inspector.aero every 9 days. Most recently, 01Converter was updated on November 6, 2026 and Inspector.aero on November 3, 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.*