Hammer vs Ledge Notebook

Hammer is a professional HTTP and HTTPS debugging toolkit for developers, QA engineers, mobile teams, and technical users who need a clear way to inspect, analyze, and troubleshoot network traffic on iPhone and iPad. Whether you are testing an API, debugging a mobile app, checking request headers, reviewing response data, or exporting sessions for deeper analysis, Hammer helps you understand what is happening between your app, website, and backend services. Designed for local-first network inspection, Hammer keeps captured data on your device by default. Requests, responses, headers, cookies, and session history remain local unless you choose to export or share them. How Hammer Works: Hammer uses Apple's public Network Extension framework and a Packet Tunnel Provider to enable on-device traffic capture. When you tap Start and approve the iOS system configuration prompt, Hammer creates a local Packet Tunnel. Traffic included in the active capture session is routed through Hammer's local proxy process on the same device, where requests and responses can be inspected and displayed. The Packet Tunnel does not connect your traffic to a remote VPN server. Hammer does not provide anonymous browsing, change your virtual location, or hide your public IP address. iOS displays VPN-related permission text and may show a VPN status indicator because Apple manages Packet Tunnel Provider configurations through its VPN configuration infrastructure. Key Features: Live Traffic Capture Capture HTTP and HTTPS requests in real time. Review method, host, path, status code, protocol, timing, size, and request details in a clean debugging interface. Detailed Request Inspector Inspect URL parameters, request and response headers, message bodies, status codes, timing metrics, and content types. HTTPS Debugging Use optional certificate-based HTTPS inspection in development, testing, or other authorized environments. Certificate installation and trust are controlled by the user through iOS Settings. Request History Keep capture sessions organized locally so you can revisit traffic, compare results, and investigate issues after testing. Rules and Filters Manage rules for bypassing hosts, blocking traffic, rewriting requests, mapping responses, and controlling traffic during debugging. HAR Export Export captured sessions as HAR files for desktop analysis, bug reports, team collaboration, or long-term debugging records. Local Proxy Workflow Use Hammer's on-device Packet Tunnel and local proxy workflow to inspect traffic from apps, browsers, and services you are authorized to analyze. Clean Debugging Interface Work with readable request lists, structured detail views, protocol statistics, favorites, and practical tools for repeated debugging. Local-First Privacy Captured network content is processed and stored locally by default. Hammer does not require an account, and the Packet Tunnel does not upload captured traffic to a remote VPN server. Data leaves your device only when you explicitly export, share, or submit it through a user-initiated action. Hammer is useful for: • Debugging mobile app API requests • Inspecting HTTP and HTTPS traffic • Reviewing headers, cookies, and response bodies • Testing backend services and REST APIs • Checking status codes, redirects, and timing • Exporting HAR files for issue reports • Managing traffic rules during development • Investigating network behavior during QA testing Hammer is intended for legitimate development, testing, and debugging workflows. Use it only with apps, websites, services, and network traffic that you own or have permission to inspect.

Ledge is a Markdown notebook that runs the code in your notes. Write the commands for a deploy, a fix or a setup once, with the reasoning beside them, and run each block with a tap. The output appears right under the block. On iPhone and iPad, Ledge opens the notes on your own server: a Linux machine or a Mac running the free Ledge server, reached over SSH. Your notes, shells and commands stay on your machine. RUN ANYTHING • Shell, Python, Node, TypeScript, Ruby, PHP and Redis blocks run with the tools on your server • Add SQL or any other language by naming the command that runs it, such as psql or mysql • Prompt blocks hand a request to an AI agent on your server, such as Claude Code, which can read your notes • Answer a running command's prompts by typing into its output, with ^C, ^D, Esc and arrow keys above the keyboard • Each note keeps its own shell, so a cd or an exported variable carries into the next block • Give a note its own working directory, environment and secrets, kept outside the note • Run a note's blocks on another machine over SSH with one line at the top of the note • Mark a risky block to ask before it runs • A command keeps running on the server after you lock the phone, and its output is waiting when you come back WRITE AND ORGANIZE • Markdown with live preview, tables, checklists and images, including photos from the camera • Link notes to each other, with outline, backlinks and tags panels • Workspaces, folders, favorites and full-text search • Use the same notes from Ledge for Mac and from every phone and iPad you pair PRIVATE AND SECURE • You stay in control of your notes: they live on your own machine, not on our servers or anyone else's • No Ledge account, no sign-up and no third party in between • Sign in with a key made in the Secure Enclave that never leaves the device, or with a password kept in the keychain • Each server's host key is confirmed on the first connection and checked on every one after • Lock sensitive notes with a passphrase • Add a server by scanning the QR code it prints WHAT YOU NEED A Mac or a Linux machine you can reach over SSH, with the Ledge server installed. One command installs it, with no root access, no open port and no background service. The guide in the app walks you through it. Ledge is free and open source.