# TLS Inspector vs Techniker Toolbox

The clearest difference is in-app purchases: TLS Inspector at none against Techniker Toolbox's 1. TLS Inspector also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.0). Techniker Toolbox's advantage is review sentiment (100% vs 84%). On price, update cadence and ads there is nothing between them.

Both are free to download. Techniker Toolbox sells 1 one-off in-app purchase. TLS Inspector asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 6 weeks. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | TLS Inspector | Techniker Toolbox |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (256 ratings)](https://appshunter.io/ios/app/tls-inspector/id1100539810/reviews)** | — |
| Number of ratings | **256** | — |
| Positive reviews | 83.7% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | Every 6 weeks |
| Monetization | **Free** | Freemium |
| Size | 19 MB | 4 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Ian Spence](https://appshunter.io/developer/572311760) | [Dominik Gausmann](https://appshunter.io/developer/1870320985) |

## What reviewers say

### TLS Inspector

[App page](https://appshunter.io/ios/app/tls-inspector/id1100539810)

Inspect TLS certificates for any domain or IP address to understand trust and safety. Detect man-in-the-middle attacks by highlighting invalid certificates. Access detailed certificate properties and integrate with your browser.

**Highlights:** Input domain or IP for inspection, Inspect websites via browser extension, View entire issue chain and trust status, Detailed TLS certificate properties, Detect man-in-the-middle attacks, Share sheet integration with Safari

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- ✅ Essential security utility
- 🔧 Useful for cert renewals
- 📱 Inspects certs on mobile
- 💡 Innovative CA root updating
- 👍 Seamless share sheet integration

**What reviewers complain about**

- 🐛 Share extension not working
- ⚠️ Error messages for updates
- 📉 No longer works for some
- 🥶 App freezes
- 🚫 Unauthorized app claim

**Reported bugs**

- App crash issue fixed
- Share extension 'inspect website' never works
- Error checking for TLS bundle updates
- App freezes
- App locks up, non functional

**Requested features**

- Continue making app great and helpful
- Add dark mode option
- More advanced features


### Techniker Toolbox

[App page](https://appshunter.io/ios/app/techniker-toolbox/id6795246932)

This app provides essential technical calculators and a compact lexicon for maintenance, service, and technical education. It covers electrical engineering, mechanics, IT, pneumatics, and hydraulics, with basic functions available for free and premium features via a one-time purchase.

**Highlights:** Electrical engineering calculations, Mechanics and drive calculations, IT and OT subnetting, Pneumatics and hydraulics, Technical lexicon and guides, Unit and dB converters, Favorites and history

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Techniker Toolbox Premium | $1.99 | one-time |


## Frequently asked questions

### Is TLS Inspector free?

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

### Is Techniker Toolbox free?

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

### Do TLS Inspector or Techniker Toolbox have ads?

Neither TLS Inspector nor Techniker Toolbox shows ads.

### Which is updated more often, TLS Inspector or Techniker Toolbox?

TLS Inspector ships an update every 6 weeks, and Techniker Toolbox every 6 weeks. Most recently, TLS Inspector was updated on November 2, 2026 and Techniker Toolbox on October 30, 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.*