Dev Tool box vs API Key Manager
Price, ratings, monetisation and update history for both apps, side by side ā 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.
API Key Manager
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API Key Manager is a private vault for the credentials developers use every day ā on iPhone, iPad, and Mac. PROTECT EVERY SECRET ⢠API key values are stored in the Keychain, never in the app database ⢠Optional Face ID protects reveal and copy actions ⢠Copied keys stay on this device and never leave through Universal Clipboard ⢠No account, ads, analytics, tracking, or credential server ORGANIZE YOUR WAY ⢠Only a name and secret are required ā everything else is optional ⢠Presets for OpenAI, Stripe, Anthropic, GitHub, and AWS, or enter any provider ⢠Choose an icon independently from the provider ⢠Label development, staging, and production credentials ⢠Search names, providers, environments, and notes FREE AND PRO The Free plan stores up to 3 credentials with every security feature included. Pro unlocks unlimited credentials and end-to-end encrypted sync across iPhone, iPad, and Mac through your iCloud Keychain. Monthly and annual plans are processed by Apple, can be restored, and may be cancelled in App Store subscription settings. Privacy Policy: https://api-key-manager-ios.kai-54321.chatgpt.site/privacy Terms of Use: https://api-key-manager-ios.kai-54321.chatgpt.site/terms
Screenshots
Verdict
The clearest difference is in-app purchases: Dev Tool box at none against API Key Manager's 2. API Key Manager's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Both are free to download. API Key Manager sells 2 in-app purchases, starting at $1.99 per month. Dev Tool box asks for nothing beyond the download.
Dev Tool box ships an update every 3 weeks, API Key Manager every 5 weeks. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.
| Parameter | Dev Tool box | API Key Manager |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks ā better | Every 5 weeks |
| Ads | Yes | No ā better |
| In-app purchases | No ā better | Yes |
| Devices | iPhone, iPad, Mac ā better | iPhone, Mac |
| Requires iOS | 18.0 | 18.0 |
| Further details ā not scored | ||
| Size | 4 MB | 2 MB |
| Age rating | 4+ | +4 |
| Developer | Seonggon Sim | Kai Natori |
In-app purchases
Dev Tool box
No in-app purchases
API Key Manager
- Monthly Pro$1.991 Month
- Annual Pro$19.991 Year









