TLS Inspector vs Techniker Toolbox
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TLS Inspector
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.
- 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
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Trust & Safety in the palm of your hand. • Input & Inspect. It's really that simple. Input a domain or IP address using the TLS Inspector app, or inspect any website from within your favourite browser using our Inspect Website extension. • No Nonsense Results. "At a glance" has never been easier. TLS Inspector will show you the entire issue chain for any website, and whether or not your device trusts that chain. • Dive Deep. Details for days. View important properties of any TLS certificate including fingerprints, dates, algorithms, and more. • Stay Safe Online. No training required. TLS Inspector makes it easy to detect and avoid man-in-the-middle attacks on unsafe networks by highlighting invalid and untrustworthy certificates. • Right Place, Right Time. Inspect nearly anything from anywhere. Easily access TLS Inspector from other apps, such as Safari, with the Show Certificates share sheet action. TLS Inspector is free & libre open source software (FLOSS) with source code available on GitHub. TLS Inspector is made entirely without the use of Artificial Intelligence (AI) or Large Language Models (LLMs).
Techniker Toolbox
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.
- 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
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Techniker Toolbox is your practical companion for maintenance, field service, workshop tasks and technical training. Technical calculators, a compact reference and clear help texts support your work on site. ELECTRICAL ENGINEERING Ohm’s law, three-phase power, voltage drop, motor current, circuit protection, and power supply and UPS sizing. MECHANICS Torque and power, conveyor belt speed, bearing life, gear ratios, motor and drive sizing, and thermal expansion. IT AND OT Subnets and CIDR, data rates and transfer times, storage requirements, video storage, PoE power budgets and UPS runtime. PNEUMATICS AND HYDRAULICS Cylinder force, pneumatic sizing, hydraulic power and compressed air consumption. REFERENCE AND EVERYDAY TASKS A technical reference with explanations, checks and diagrams for RJ45 T568A/B and fiber color sequences. A unit converter, dB calculator, favorites and recently used tools help you find answers quickly. Basic features are free. An optional one-time Premium purchase permanently unlocks additional features, including advanced calculators and iCloud synchronization. The app supports German, English, Spanish, French, Italian, Portuguese, Dutch, Polish, Japanese, Simplified Chinese and Korean. Number formatting and inputs follow your region. Results are for guidance only and do not replace professional design or inspection. Follow local regulations, manufacturer specifications and safety requirements. Work on electrical installations must be carried out by appropriately qualified personnel.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | TLS Inspector | Techniker Toolbox |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (256 ratings) — better | — |
| Positive reviews | 83.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 256 — better | — |
| Update frequency | Every 6 weeks | Every 6 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 19 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Ian Spence | Dominik Gausmann |
Customer experience
TLS Inspector
Techniker Toolbox
Bugs and requests
TLS Inspector
Reported bugs
5 issues- 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
3 requests- Continue making app great and helpful
- Add dark mode option
- More advanced features
Techniker Toolbox
Not enough reviews yet to summarise bugs or requests.
In-app purchases
TLS Inspector
No in-app purchases
Techniker Toolbox
- Techniker Toolbox Premium$1.99
Questions
Is TLS Inspector free?
Is Techniker Toolbox free?
Do TLS Inspector or Techniker Toolbox have ads?
Which is updated more often, TLS Inspector or Techniker Toolbox?
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