# CertTool vs JWT & Base64 Decoder/Verifier

The clearest difference is ads: CertTool at none against JWT & Base64 Decoder/Verifier's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 5, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | CertTool | JWT & Base64 Decoder/Verifier |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | Every 2 months |
| Size | 6 MB | 38 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Tim Wilbrink](https://appshunter.io/developer/412396045) | [Yuan-Yi Chang](https://appshunter.io/developer/784363421) |

## What reviewers say

### CertTool

[App page](https://appshunter.io/ios/app/certtool/id6742362154)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is CertTool free?

CertTool is free to download, with no in-app purchases.

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

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

### Do CertTool or JWT & Base64 Decoder/Verifier have ads?

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

### Which is updated more often, CertTool or JWT & Base64 Decoder/Verifier?

CertTool ships an update every 2 months, and JWT & Base64 Decoder/Verifier every 2 months. Most recently, CertTool was updated on October 5, 2026 and JWT & Base64 Decoder/Verifier on October 10, 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.*