TMD Locks vs SAM Systems
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TMD Locks
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Download the TMD Locks App for your TMD Chain Lock. The TMD Chain Lock is the first keyless chain lock with built-in alarm. KEYLESS WITH BUILT-IN ALARM Open the lock with a press of the button when your phone is nearby. No more keys, just fast and secure access. And rest assured that the built-in 100dB alarm will scare away any thieves that dare to touch your lock. LUXURY AND SECURITY While the lock body is designed to withstand the harshest conditions and attacks, it is also soft on the outside to prevent your ride from getting damaged. The sleeve sets a new standard with its light weight, flexibility and soft outside. While the use of innovative materials offers unparalleled protection. DURABILITY The TMD Chain Lock goes beyond security and usability, by offering incredible durability too. It is engineered to perform in the harshest conditions: - Water resistant - Temperature resistant - Shock resistant A SIMPLE - YET POWERFUL - APP With the free TMD Locks App, you can do so much more than just open your lock: - Share your lock with friends and family without having to duplicate and share physical keys. - View where, when, by whom and if your lock was used. - Always find your way back to your lock, by viewing where you've last used it. CERTIFIED SECURITY The TMD Chain Lock has the ART 2 certification, and is IP57 certified too.
SAM Systems
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SAM – Smart Access Management: The App for Digital Self‑Storage Access SAM is an app designed for all users, modernizing the way you access and manage self‑storage units. Created for anyone who uses storage spaces, SAM offers a simple, secure, and flexible way to control your rented units digitally. Key Features: Instant Access: Open your booked self‑storage units directly from your smartphone. Real‑Time Status: Keep track of your unit’s door status and other important information at any time. Share Access: Invite other people and grant them secure digital access – perfect for family and friends. How It Works: After booking a unit with one of our partners, simply log in to the SAM app using your booking email. Your rented unit will automatically appear in the app. Want to share access? Add trusted users and set the time period during which they can enter.
Screenshots
Verdict
The clearest difference is update cadence: TMD Locks at fortnightly against SAM Systems's every 3 months. On price, ads, in-app purchases and device support 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. Neither carries in-app purchases, so what you see is what you pay.
TMD Locks ships an update fortnightly, SAM Systems every 3 months. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.
| Parameter | TMD Locks | SAM Systems |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone | iPhone |
| Requires iOS | 18 — better | 18.6 |
| Further details — not scored | ||
| Size | 61 MB | 33 MB |
| Age rating | 4+ | 4+ |
| Developer | TMD Security | JustTec GmbH |
In-app purchases
TMD Locks
No in-app purchases
SAM Systems
No in-app purchases









