Klacci Smartlink vs O2Lock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Klacci Smartlink
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Smart card and smartphone dual authentication A combination of security and flexibility Comes standard with choices of unlocking method including smart card and smartphone, which brings the advantage of faster access time yet with security in mind.Not only proximity contactless, the iF+ Series is offering a powerful mix among performance, convenience, security and flexibility from what the smart card can be provided. • Performance Proximity contactless verification time of less than 1 second, giving users the maximum speed to access with longer card reading distances. •Convenience Electronic credentials can be quickly assigned or revoked by the administrator at the lock. It is just that easy to adjust your access authorization for either longer term or temporary access users. •Security The smart card is completely secured by secure messaging. Accessing data stored is protected by up to AES 128-bit encryption. •Flexibility Fully compliant with the contactless proximity smart card protocol according to ISO14443A/B. The electronic key available in multiple formats such as tag or transponder to fit your preference. For more information please refer to: https://www.klacci.com/if-plus-series-touchless-smart-lock/ Access multiple doors with one single set of passcode, which can be replaced by fingerprint verification if your smartphone device has such capability. For additional security, a second layer facial recognition system will confirm the identity of the user to prevent embezzlement. The biometric verification data is stored in your phone to protect your privacy. If your phone is lost or stolen, you can log into your account from another device, by doing so your account will be automatically logged off your old phone and all biometric data is deleted. The system’s online capabilities allow real-time and remote management. As an administrator you can add, delete or modify any user’s access rights from anywhere at any time, with these changes updated instantly.
O2Lock
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Opens NFC powered locks from One2Lock. Can operate on Furniture locks, Padlocks and Multi Purpose locks. Allows you to easy share keys between devices.
Screenshots
Verdict
The clearest difference is update cadence: O2Lock at every 3 weeks against Klacci Smartlink's every 2 months. O2Lock also leads on iOS requirement (12.0 vs 15.0). 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.
Klacci Smartlink ships an update every 2 months, O2Lock every 3 weeks. The most recent releases landed on September 18, 2026 and September 16, 2026 respectively.
| Parameter | Klacci Smartlink | O2Lock |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 104 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | I-TEK METAL MANUFACTURING CO., LTD. | One2Touch AS |
In-app purchases
Klacci Smartlink
No in-app purchases
O2Lock
No in-app purchases









