# Request12 — Capture and replay API traffic

> Capture and replay API traffic (iPhone/iPad app by Blupurple Design Ltd..)

- Source: https://appshunter.io/ios/app/request12/id6759087278 (this page in markdown: same URL + `.md`)
- Developer: [Blupurple Design Ltd.](https://appshunter.io/developer/530891387)
- Category: Developer Tools, Productivity
- Price: Free
- Age rating: 17+
- Requires: iOS 17.0 · 1 MB
- Languages: American English
- Released: 2026-02-16
- Data updated: 2026-09-03
- User reviews in markdown: https://appshunter.io/ios/app/request12/id6759087278/reviews.md

## What is Request12?

Request12 is a focused API debugging tool built for iOS developers, QA engineers, and technical teams that need fast visibility into web traffic.

Use the built-in browser to load a page, capture network calls, inspect details, and replay requests with edits in a sandbox environment.

What you can do

- Browse any target URL in an embedded webview.
- Automatically capture `fetch` and `XMLHttpRequest` traffic from pages loaded in the app.
- View method, status, timestamp, full URL, headers, request body, and response body.
- Filter traffic by method and search by URL/status/error.
- Inspect JSON with pretty print and syntax highlighting.
- Copy URL, request body, response body, and payload sections in one tap.
- Send captured requests directly to Sandbox.
- Edit method, URL, headers, and body before execution.
- Execute with cookie sync support from the browser context.
- Review response status, latency, headers, and body for fast validation.
- Switch between Light, Dark, and System themes.

Request12 is designed for fast iteration:

- Reproduce issues from real traffic.
- Validate backend changes quickly.
- Compare original vs modified requests.
- Test custom headers and payload variations on mobile.

Notes
Request12 captures traffic generated inside the app browser context and sandbox workflow. It is intended for authorized testing and debugging use cases.


## Version history (last 1 release)

### 1.0 — 2026-02-16

No release notes.

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## More apps by Blupurple Design Ltd.

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- [PingModel](https://appshunter.io/ios/app/pingmodel/id6758910107)

All apps by Blupurple Design Ltd.: https://appshunter.io/developer/530891387

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-03.*