iLOQ S50 vs COLT 4
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iLOQ S50
Transform your NFC-enabled smartphone into a digital key. This app allows you to unlock iLOQ S50 locks and readers using your phone, provided you have been granted access rights by your system administrator. It offers a convenient and energy-harvesting method for secure access.
- Smartphone as a digital key
- NFC lock and reader access
- Energy harvesting from NFC
- Administrator-managed access rights
- Update access for physical keys/fobs
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With the iLOQ S50 app your smartphone becomes a key. By downloading the S50 app you can use your NFC-enabled phone to open iLOQ S50 locks and readers to which your locking system administrator has given you access rights. Opening locks is simple and convenient: Just place your phone’s NFC area close to the lock’s reader while the application is open and tap the lock icon on the screen. The reader harvests energy from the phone's NFC field and verifies your access rights for opening the lock. To use the S50 app as a key your phone number needs to be registered to a locking system by the administrator, after this you’ll receive a key registration message via SMS or email. Your access rights can also be updated at any time by the administrator, contact them for more info. The S50 app can also be used to update access rights to iLOQ K5 keys and K55S.2 Key Fobs.
COLT 4
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COLT app is a free-to-download app for the COLT (clamp on line tension meter). The COLT app's simple and easy-to-use interface will enable the operator to use the app with the utmost efficiency.
Screenshots
Verdict
The clearest difference is update cadence: COLT 4 at monthly against iLOQ S50's every 3 months. COLT 4 also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement 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.
iLOQ S50 ships an update every 3 months, COLT 4 monthly. Both last shipped on October 25, 2026.
| Parameter | iLOQ S50 | COLT 4 |
|---|---|---|
| Price | Free | Free |
| Rating | 1.4 (48 ratings) — better | — |
| Positive reviews | 20.0% of reviews | — |
| Number of ratings | 48 — better | — |
| Update frequency | Every 3 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 18 MB | 155 MB |
| Age rating | 4+ | 4+ |
| Developer | iLOQ Ltd. | Straightpoint |
In-app purchases
iLOQ S50
No in-app purchases
COLT 4
No in-app purchases
