# JWT & Base64 Decoder/Verifier vs TTY.Build

The clearest difference is price: JWT & Base64 Decoder/Verifier at Free against TTY.Build's $1.99. JWT & Base64 Decoder/Verifier also leads on iOS requirement (15.0 vs 26.0). TTY.Build's advantage is ads (none vs shown) and update cadence (every 4 days vs every 2 months). On in-app purchases and device support there is nothing between them.

JWT & Base64 Decoder/Verifier is free to download; TTY.Build costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

JWT & Base64 Decoder/Verifier ships an update every 2 months, TTY.Build every 4 days. The most recent releases landed on October 10, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | JWT & Base64 Decoder/Verifier | TTY.Build |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ttybuild-agents-and-terminal/id6792312114/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | — | Paid |
| Size | 38 MB | 17 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Yuan-Yi Chang](https://appshunter.io/developer/784363421) | [YellowPlus, Inc.](https://appshunter.io/developer/1619724333) |

## What reviewers say

### JWT & Base64 Decoder/Verifier

[App page](https://appshunter.io/ios/app/jwt-and-base64-decoderverifier/id6774981612)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### TTY.Build

[App page](https://appshunter.io/ios/app/ttybuild-agents-and-terminal/id6792312114)

Manage AI coding agents and remote terminal sessions from your iPhone and Apple Watch. Monitor agent status, receive attention through Live Activities, and take control of terminals directly from your device.

**Highlights:** AI agent monitoring, Remote terminal access, Live Activities & Dynamic Island integration, End-to-end encrypted sessions, Multi-computer terminal support, Touch-friendly terminal toolbar

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is JWT & Base64 Decoder/Verifier free?

JWT & Base64 Decoder/Verifier is free to download, with no in-app purchases.

### Is TTY.Build free?

TTY.Build costs $1.99, with no in-app purchases.

### Do JWT & Base64 Decoder/Verifier or TTY.Build have ads?

JWT & Base64 Decoder/Verifier shows ads; TTY.Build does not.

### Which is updated more often, JWT & Base64 Decoder/Verifier or TTY.Build?

JWT & Base64 Decoder/Verifier ships an update every 2 months, and TTY.Build every 4 days. Most recently, JWT & Base64 Decoder/Verifier was updated on October 10, 2026 and TTY.Build on October 17, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*