# JSON Web Token — Decode, sign & verify tokens

> Decode, sign & verify tokens (iPhone/iPad app by Prismatic Apps.)

- Source: https://appshunter.io/ios/app/json-web-token/id6502089325 (this page in markdown: same URL + `.md`)
- Developer: [Prismatic Apps](https://appshunter.io/developer/1530675050)
- Category: Developer Tools, Productivity
- Price: $2.99
- Age rating: 4+
- Requires: iOS 17.0 · 7 MB
- Languages: American English
- Released: 2024-05-15
- Data updated: 2026-08-24
- User reviews in markdown: https://appshunter.io/ios/app/json-web-token/id6502089325/reviews.md

## What is JSON Web Token?

JSON Web Token is the fastest way to build, decode and verify JWTs on iPhone, iPad and Mac.

Paste any token and instantly see its header and payload, neatly typed and editable. Sign your own tokens with the algorithm of your choice, verify signatures against your own keys, and copy the result with one tap.

BUILD
• Create tokens from scratch with editable header and payload fields
• 12 signing algorithms: HS256/384/512, RS256/384/512, PS256/384/512, ES256/384/512
• One-tap generation of real random keys for every algorithm family

VERIFY
• Paste your own HMAC secret or public key to verify any token
• Clear verified/invalid signature badge
• Tamper with the payload and watch the signature react

INSPECT
• Typed values: strings, numbers, booleans, arrays, nested objects, null
• JSON view with configurable indentation, ready to copy
• Header and payload sizes in bytes
• Date helper to convert timestamps for iat, exp and nbf claims

Built for developers: no account, no tracking, everything stays on your device.


## Version history (last 2 releases)

### 1.1 — 2026-07-24

• Brand-new app icon and launch screen
• New Signature Keys section: view, edit, copy or paste your own signing keys and HMAC secrets
• Real random key generation for every algorithm (RSA, ECDSA, HMAC)
• Verify external tokens with your own public key or secret
• Fixed verification of HMAC tokens signed outside the app
• Under-the-hood cleanup and improved stability

### 1.0 — 2024-05-15

No release notes.

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All apps by Prismatic Apps: https://appshunter.io/developer/1530675050

## Related topics

[json web](https://appshunter.io/ios/topics/json-web) · [prismatic apps](https://appshunter.io/ios/topics/prismatic-apps)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-24.*