HelvetiKit
All-in-one developer tool
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
A refreshed home for 16 developer tools. Format JSON, convert colors, work with QR codes, and more—with adaptive workspaces for iPhone Duo.
Sixteen developer utilities, ready when you need them.
HelvetiKit brings everyday conversions and diagnostics into one focused toolbox for iPhone, iPhone Duo, and iPad. Search for a tool, arrange your favorites, and work in a layout that adapts to the available space.
CODE AND TEXT
- Format, minify, validate, and sort JSON.
- Decode JWT headers and payloads.
- Encode and decode Base64 text and URLs.
- Calculate MD5, SHA-1, SHA-256, and SHA-512 hashes.
- Test regular expressions and perform replacements.
- Convert text case and generate Lorem Ipsum.
COLORS, NUMBERS, AND TIME
- Convert HEX, RGB, and HSL colors with a native color picker.
- Copy color values and SwiftUI or UIColor snippets.
- Convert binary, octal, decimal, and hexadecimal numbers.
- Convert Unix timestamps and dates, including milliseconds.
- Generate UUIDs in bulk.
QR TOOLS
- Generate QR codes from text or links.
- Scan with the camera or recognize codes in photos.
- Save generated QR images to your photo library.
NETWORK UTILITIES
- Look up DNS records and public IP information.
- Measure HTTP response latency for a host you choose.
A WORKSPACE THAT FITS
Compact navigation keeps tools close at hand. Wider layouts can show the tool sidebar and place input beside results. Refined light and dark appearances, support for larger text, and English and Simplified Chinese make everyday tasks easier to follow.
PRIVACY-MINDED BY DESIGN
Local conversions run on your device. Network utilities connect only when you run a lookup or request. Camera and photo access are used for QR tools when you choose those features. No separate app account is required.
TRY IT, THEN GO PRO
Try 10 tool runs for free. An optional Pro purchase unlocks unlimited runs.
Ratings & Reviews
- Redesigned the tool library and workspaces with colored icons, indigo controls, and refined light and dark appearances.
- Added adaptive layouts for iPhone Duo, including a tool sidebar and side-by-side input and results when space allows.
- Improved search, tool reordering, larger-text layouts, and keyboard dismissal.
- Improved color conversion accuracy when editing HEX, RGB, and HSL values.
- Fixed JSON key sorting and formatting of scalar values.
- Refined QR rendering, copy controls, and input layouts throughout the toolbox.
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
- 3.6 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 $0.99
- Copyright
- © 2026 HelvetiKit. All rights reserved.