# CertsCheck vs CertTool

The clearest difference is in-app purchases: CertTool at none against CertsCheck's 3. CertTool also leads on iOS requirement (16.6 vs 18.0). CertsCheck's advantage is update cadence (monthly vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. CertsCheck sells 3 in-app purchases, starting at $1.99 per month. CertTool asks for nothing beyond the download.

CertsCheck ships an update monthly, CertTool every 2 months. The most recent releases landed on September 16, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | CertsCheck | CertTool |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/certscheck/id6469147491/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Freemium | — |
| Size | 36 MB | 6 MB |
| Requires iOS | 18.0 | **16.6** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Yuya Asamura](https://appshunter.io/developer/1184558977) | [Tim Wilbrink](https://appshunter.io/developer/412396045) |

## What reviewers say

### CertsCheck

[App page](https://appshunter.io/ios/app/certscheck/id6469147491)

Easily inspect the details of TLS/SSL certificates directly from your browser. This tool helps you understand certificate information, including those from Let's Encrypt, without needing to be a security expert.

**Highlights:** Check TLS/SSL certificate contents, Inspect certificate details via URL, Share Extension for browsers, Understand Let's Encrypt certificates, Premium subscription for advanced features

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium (Monthly) | $1.99 | per month |
| Premium (Yearly) | $19.99 | per year |
| Buy developer a coffee | $1.99 | one-time |


### CertTool

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CertsCheck free?

CertsCheck is free to download, with in-app purchases available.

### Is CertTool free?

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

### Do CertsCheck or CertTool have ads?

Neither CertsCheck nor CertTool shows ads.

### Which is updated more often, CertsCheck or CertTool?

CertsCheck ships an update monthly, and CertTool every 2 months. Most recently, CertsCheck was updated on September 16, 2026 and CertTool on September 23, 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.*