# Developer Utilities vs 39Tools

The clearest difference is ads: 39Tools at none against Developer Utilities's shown. Developer Utilities's advantage is update cadence (every 6 weeks vs every 9 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Developer Utilities ships an update every 6 weeks, 39Tools every 9 months. The most recent releases landed on September 13, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Developer Utilities | 39Tools |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/developer-utilities-dev-tool/id1521045436/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 6 weeks** | Every 9 months |
| Monetization | Ad-supported | — |
| Size | 17 MB | 112 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Qingyu Chen](https://appshunter.io/developer/1629701754) | [策 王](https://appshunter.io/developer/1681706231) |

## What reviewers say

### Developer Utilities

[App page](https://appshunter.io/ios/app/developer-utilities-dev-tool/id1521045436)

This app offers a suite of essential tools for developers and testers. It facilitates network and development debugging with features like LAN text transfer, JS injection, and DNS resolution. It also includes utilities for QR code scanning/generation and system information viewing.

**Highlights:** LAN text transfer, Frontend debugging, JS injection, QR code scanning and generation, Network information viewing, DNS resolution, JSON formatting

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

**In-app purchases:** none


### 39Tools

[App page](https://appshunter.io/ios/app/39tools/id6447797534)

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

**In-app purchases:** none


## Frequently asked questions

### Is Developer Utilities free?

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

### Is 39Tools free?

39Tools is free to download, with no in-app purchases.

### Do Developer Utilities or 39Tools have ads?

Developer Utilities shows ads; 39Tools does not.

### Which is updated more often, Developer Utilities or 39Tools?

Developer Utilities ships an update every 6 weeks, and 39Tools every 9 months. Most recently, Developer Utilities was updated on September 13, 2026 and 39Tools on September 10, 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.*