O2Lock vs Zctower
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
Zctower
Control smart lock terminal devices remotely. Manage unlocking, locking, key settings, and permissions wirelessly. Collect data from your devices.
- Wireless device control
- Unlocking and locking
- Key setting
- Permission management
- Data collection
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Zhengcheng Smart Lock APP is an application designed by Fuzhou Zhengcheng Lead Seal Co., Ltd. to control terminal devices. It uses wireless technology to realize operations such as unlocking, locking, key setting, permission control, and data collection of terminal devices.
Screenshots
Verdict
The clearest difference is update cadence: Zctower at weekly against O2Lock's every 3 weeks. 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.
O2Lock ships an update every 3 weeks, Zctower weekly. The most recent releases landed on September 16, 2026 and June 1, 2026 respectively.
| Parameter | O2Lock | Zctower |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 3 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 30 MB | 43 MB |
| Age rating | 4+ | 4+ |
| Developer | One2Touch AS | 福州正城铅封有限公司 |
In-app purchases
O2Lock
No in-app purchases
Zctower
No in-app purchases
