# GMT Doorlock vs Bviser

The clearest difference is iOS requirement: GMT Doorlock at 9.0 against Bviser's 16.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

GMT Doorlock ships an update every 6 weeks, Bviser every 4 weeks. The most recent releases landed on October 8, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | GMT Doorlock | Bviser |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 4 weeks** |
| Size | 39 MB | 112 MB |
| Requires iOS | **9.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [JSW PACIFIC CORPORATION](https://appshunter.io/developer/999731327) | [Global City Net Technology](https://appshunter.io/developer/1272039288) |

## What reviewers say

### GMT Doorlock

[App page](https://appshunter.io/ios/app/gmt-doorlock/id1469340231)

**In-app purchases:** none


### Bviser

[App page](https://appshunter.io/ios/app/bviser/id1611888919)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is GMT Doorlock free?

GMT Doorlock is free to download, with no in-app purchases.

### Is Bviser free?

Bviser is free to download, with no in-app purchases.

### Do GMT Doorlock or Bviser have ads?

Neither GMT Doorlock nor Bviser shows ads.

### Which is updated more often, GMT Doorlock or Bviser?

GMT Doorlock ships an update every 6 weeks, and Bviser every 4 weeks. Most recently, GMT Doorlock was updated on October 8, 2026 and Bviser on October 19, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*