Dev Tool box vs WriteAccess
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Dev Tool box
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DevToolbox is an essential collection of developer utilities designed to streamline your coding workflow. Whether you're debugging APIs, encoding data, or formatting JSON, DevToolbox provides the tools you need in a clean, native interface. KEY FEATURES: • JSON Formatter & Validator Format, validate, and beautify JSON with syntax highlighting. Tree view visualization for better structure understanding. Built-in search functionality to find text within large JSON files. • URL Encoder/Decoder Quickly encode or decode URLs for API testing and web development. RFC 3986 compliant encoding for maximum compatibility. • Base64 Encoder/Decoder Convert text to Base64 and vice versa. Supports URL-safe Base64 and auto-padding. Perfect for encoding credentials, tokens, and data URIs. • JWT Decoder Decode and inspect JSON Web Tokens without external services. View header, payload, and signature details instantly. Automatically handles "Bearer " prefix. • Text Case Converter Transform text between various cases: camelCase, PascalCase, snake_case, kebab-case, SCREAMING_SNAKE_CASE, dot.case, UPPERCASE, lowercase, and Title Case. Smart parsing for any input format. • Hash Generator Generate secure hashes using MD5, SHA-1, SHA-256, and SHA-512 algorithms. Essential for checksum verification and security testing. • Unix Timestamp Converter Convert between Unix timestamps and human-readable dates. Supports seconds and milliseconds. Multiple output formats including ISO 8601, UTC, and local time. • Number Base Converter Convert between Decimal, Binary, Octal, and Hexadecimal. Auto-detects input format with 0x, 0b, 0o prefix support. • String Escape/Unescape Escape special characters for JSON strings or unescape encoded text. Handles \n, \t, \", \\ and more. • Color Converter Convert HEX colors to RGB and HSL with live preview. Generates ready-to-use SwiftUI, UIKit, and CSS code snippets. WHY DEVTOOLBOX? • Native Performance: Built with SwiftUI for blazing-fast performance • Privacy First: All processing happens locally on your device • Universal App: Works seamlessly on iPhone, iPad, and Mac • Dark Mode Support: Easy on the eyes during late-night coding sessions • No Ads, No Tracking: Just pure functionality • Offline Ready: No internet connection required Perfect for mobile developers, web developers, API developers, QA engineers, security professionals, and students learning to code. DevToolbox is your pocket-sized development companion. Stop switching between websites and online tools - get everything you need in one native app.
WriteAccess
Manage your servers directly from your mobile device. This app provides a full SSH terminal, a file editor that saves directly to your server, and live server statistics. It's designed for quick fixes and hands-on server management.
- Full SSH terminal
- Direct server file editing
- Live server statistics
- Customizable keyboard keys
- Command history suggestions
- Secure SSH key support
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Something has broken on your server and your laptop is at home. Open WriteAccess, connect, fix it, and get on with your day. WriteAccess puts a real SSH terminal, a file editor that saves straight back to your server, and live server stats on your iPhone and iPad. It is free: no account, no subscription, no ads. FIX IT IN THE TERMINAL • Real SSH shells, several at once over one connection. • A row of keys above the keyboard for Esc, Ctrl, Tab and the arrows. Choose the keys you want, in the order you want. • Tap the command line to put the cursor exactly where you need it. • Press and hold to copy output. Paste in from anywhere. • Drag to scroll back through output. Pinch to zoom. • It remembers the commands you use and suggests them as you type. EDIT FILES WHERE THEY LIVE • Open a config over SFTP, change it, save. It goes straight back to the server, with nothing to sync. • "Saved" means the server confirmed it. If a server cannot promise a safe overwrite, the file opens read-only rather than risk your data. • Browse, create, rename, delete and search your server's files. • Edit files in the Files app as well, from iCloud Drive or On My iPhone, with Markdown highlighting. Unsaved work survives an interruption. SEE WHAT YOUR SERVER IS DOING • Uptime, load, memory, disk and the busiest processes, live. • Spot the problem, fix it in the terminal, and watch the load come down. DRIVE YOUR CODING AGENT FROM YOUR PHONE • Save a start-up command for each server and open a terminal straight into your AI coding tool, or any command-line tool. It runs on your server, with your code, at your server's speed. You just steer. BUILT FOR iPAD TOO • Files, terminal and server stats side by side on a divider you can drag. • Landscape, multitasking and hardware keyboards all work. SAFE BY DESIGN • WriteAccess connects to your servers and nothing else. No middleman, no tracking, no analytics. • Sign in with a password, an SSH key (encrypted keys included) or your server's interactive prompt. • Host keys are checked on every connection. If one changes, nothing connects until you say so. • Passwords and keys stay in the iOS Keychain on your device. Your server list can follow you to your other devices through your own iCloud; passwords and keys never do. • See which servers you are connected to at a glance, and disconnect with one tap. GOOD TO KNOW Sessions close when you leave the app, so it is for hands-on work rather than watching long jobs. Sign-ins that need a second code after the password are not supported yet. For your VPS, homelab, NAS, build server, or the machine your coding agent lives on. Download WriteAccess and keep your servers in your pocket.
Screenshots
Verdict
The clearest difference is ads: WriteAccess at none against Dev Tool box's shown. On price, update cadence, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Dev Tool box ships an update every 3 weeks, WriteAccess every 6 weeks. The most recent releases landed on October 4, 2026 and October 17, 2026 respectively.
| Parameter | Dev Tool box | WriteAccess |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 3 weeks — better | Every 6 weeks |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, Mac — better | iPhone, iPad |
| Requires iOS | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Seonggon Sim | Alec Burrett |
In-app purchases
Dev Tool box
No in-app purchases
WriteAccess
No in-app purchases









