HTTP Toolkit and Moni Proxy both let you intercept, inspect, and mock HTTPS traffic from mobile apps — but they take opposite routes to get there. HTTP Toolkit is an open-source proxy that runs its interception engine and inspection UI on your desktop, with the phone routed to it over a system VPN or ADB. Moni Proxy is mobile-first: the proxy, the HTTPS decryption, and the inspection UI all run on the iPhone or Android device itself, so no computer has to be in the loop. This page compares the two so you can pick the tool that matches how you actually debug.
Quick answer
Choose Moni Proxy if you want to capture and read decrypted HTTPS traffic entirely on the phone — on cellular, in the field, or without touching a laptop — and want one license across mobile and desktop. Choose HTTP Toolkit if you prefer an open-source, desktop-centered tool and are comfortable driving mobile capture from your computer over ADB or VPN.
Feature Comparison
A high-level view of how the two approaches line up. "Partial" means the capability exists but works differently.
| Feature | Moni Proxy | HTTP Toolkit |
|---|---|---|
| Capture UI runs on the phone itself | Yes | — |
| No computer / ADB required for mobile capture | Yes | — |
| Works on cellular / away from Wi-Fi | Yes | Partial |
| iPhone / iOS on-device capture | Yes | Partial |
| Android on-device capture (no root) | Yes | Yes |
| HTTPS capture & decryption | Yes | Yes |
| Mock & rewrite responses | Yes | Yes |
| JSON → typed models (Swift/Kotlin/Dart/TS) | Yes | — |
| Desktop app for big-screen debugging | Yes | Yes |
| Open source | — | Yes |
| One-time license across mobile + desktop | Yes | Partial |
When HTTP Toolkit Makes Sense
HTTP Toolkit is a great fit for desktop-centered, open-source workflows. If you already work from a computer, want to intercept traffic from Docker, browsers, terminals and mobile in one desktop surface, and value an open-source codebase you can audit and self-host, it's an excellent tool. Its automatic interception and one-click setup for Android over ADB are genuinely convenient when a laptop is always nearby.
When Moni Proxy Makes Sense
Moni Proxy is built for on-device, mobile-first debugging. When the bug only reproduces on a real device, on cellular, or somewhere your laptop isn't, running the proxy on the phone removes the ADB cable, the desktop app, and the same-network requirement. It also adds mobile-native conveniences HTTP Toolkit doesn't focus on — one-tap JSON-to-typed-model code generation for Swift, Kotlin, Dart and TypeScript, and a single one-time license that unlocks Pro on both your phone and your desktop.
How to Choose
Ask where your debugging happens. If it lives on the desktop and you want an open-source tool spanning many client types, HTTP Toolkit is a natural pick. If it happens on the phone — and you want a zero-setup, no-laptop loop plus code generation — Moni Proxy will save time on every capture. They aren't mutually exclusive: Moni Proxy also offers a desktop app and remote pairing if you want on-device capture and a big screen.
The Real Bottleneck Isn't the Bug — It's Communication
Most debugging delays on a mobile team aren't caused by the bug itself; they're caused by how slowly the right information moves between people. QA hits an issue and sends a screenshot, the frontend developer can't reproduce it, and the backend developer can't find the request in their logs. The fix is sharing the exact traffic — the real request and real response from the device where it happened. Moni Proxy is built around capturing on the device and making that traffic easy to hand to frontend and backend, so the conversation moves from "it doesn't work" to "here's exactly what the server returned."
Frequently Asked Questions
Is Moni Proxy free?
Yes. Moni Proxy has a permanent free tier with HTTPS capture and inspection on every platform. Pro features and a cross-platform license are a one-time upgrade starting at $71, with a Multi-Device license at $79.
Does HTTP Toolkit run on the phone itself?
HTTP Toolkit's interception is configured and viewed from its desktop app; the phone routes traffic to it via VPN or ADB. Moni Proxy differs by running the proxy and the inspection UI on the device itself, so you can debug with no laptop attached.
Can Moni Proxy capture HTTPS on Android without root or a computer?
Yes. It uses Android's native VPN service plus an on-device certificate authority to capture and decrypt HTTPS directly on the phone — no ADB, no desktop app, no root.
Does Moni Proxy replace HTTP Toolkit?
It depends on your workflow. HTTP Toolkit is an excellent open-source, desktop-driven tool. Moni Proxy focuses on a mobile-first, on-device workflow and cross-team traffic sharing. Some developers use both.