# ApiCatcher vs HeaderX

The clearest difference is in-app purchases: HeaderX at none against ApiCatcher's 6. HeaderX also leads on device support (4 vs 2) and iOS requirement (15.0 vs 17.0). ApiCatcher's advantage is update cadence (every 4 days vs every 8 days). On price and ads there is nothing between them.

Both are free to download. ApiCatcher sells 6 in-app purchases, starting at $4.99 per month. HeaderX asks for nothing beyond the download.

ApiCatcher ships an update every 4 days, HeaderX every 8 days. The most recent releases landed on November 8, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | ApiCatcher | HeaderX |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (8 ratings)](https://appshunter.io/ios/app/apicatcher-capture-https/id6757103562/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 93.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 8 days |
| Monetization | Free with in-app purchases | — |
| Size | 66 MB | 1 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Nanning Signalling Network Technology Co., Ltd](https://appshunter.io/developer/1758343835) | [Gyuman Kim](https://appshunter.io/developer/1120436841) |

## What reviewers say

### ApiCatcher

[App page](https://appshunter.io/ios/app/apicatcher-capture-https/id6757103562)

This tool captures and debugs HTTP/HTTPS traffic on your mobile device. It allows you to modify, resend, and analyze requests, generate API documentation, and apply custom rules for flexible customization. All data is stored locally for privacy.

**Highlights:** Capture HTTP/HTTPS traffic, Modify and resend requests, Generate API documentation, Rewrite and script rules, Export traffic as HAR files, API scanning and statistics

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly Renewal | $4.99 | per month |
| Ultimate | $9.99 | per month |
| Pro Yearly Renewal | $19.99 | per year |
| Ultimate | $39.99 | per year |
| Lifetime Pro | $39.99 | one-time |
| Lifetime Ultimate | $69.99 | one-time |


### HeaderX

[App page](https://appshunter.io/ios/app/headerx/id6790552565)

**Features:** Safari Extension, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ApiCatcher free?

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

### Is HeaderX free?

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

### Do ApiCatcher or HeaderX have ads?

Neither ApiCatcher nor HeaderX shows ads.

### Which is updated more often, ApiCatcher or HeaderX?

ApiCatcher ships an update every 4 days, and HeaderX every 8 days. Most recently, ApiCatcher was updated on November 8, 2026 and HeaderX on October 31, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*