HelvetiKit
All-in-one developer tool
Free · In-App Purchases · Designed for iPad. Not verified for macOS.
HelvetiKit is a clean, fast, on‑device toolbox for everyday development tasks. No web round‑trips, no clutter — just the utilities you reach for all the time, in one place.
What you can do
• QR Tools
– Generate high‑quality QR codes from any text or URL
– Scan with the camera or import photos to decode existing codes
– Save generated QR images to your Photos
• Color
– Convert between HEX ⇄ RGB ⇄ HSL
– Pick colors with the system color picker and copy code snippets (SwiftUI/UIColor)
• JSON
– Pretty‑print, minify, validate
– Sort keys, handle fragments, and even normalize curly quotes
• JWT Decode
– Safely decode header/payload (Base64URL)
– Pretty‑printed JSON when available
• Text Case
– camelCase, PascalCase, UPPERCASE, lowercase
• UUID
– Generate v4 UUIDs in bulk
• Hash
– MD5, SHA‑1/256/512 from any input
• Base64 / URL Encode
– Encode/Decode with sensible defaults
• Timestamp
– Convert Unix timestamps ⇄ Date (ms supported)
• Regex
– Test and replace with instant feedback
Designed for speed and privacy
• On‑device: Your input stays on your device; nothing is uploaded.
• Thoughtful UI: Compact layout, keyboard‑friendly editing, copy helpers.
• iPhone + iPad: Landscape support and adaptive layouts.
• Localization: English and Simplified Chinese.
Go Pro (optional)
Unlock unlimited runs when you need heavy use. HelvetiKit remains fully usable for quick tasks in the free tier.
We’re actively improving HelvetiKit — if there’s a converter or utility you’d love to see, let us know!
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
- bug fix
The developer, 阳 张, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- 阳 张
- Size
- 3.4 MB
- Category
- Utilities
- Compatibility
Requires iOS 18.5 or later.
- iPhone
Requires iOS 18.5 or later. - iPad
Requires iPadOS 18.5 or later. - Mac
Requires macOS 15.5 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.5 or later.
- iPhone
- Languages
- English and Simplified Chinese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Pro User USD 4.99
- Copyright
- © 2025 HelvetiKit. All rights reserved.