# OM Elock vs ZMACS

The clearest difference is iOS requirement: OM Elock at 11.0 against ZMACS's 15.0. 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.

OM Elock ships an update fortnightly, ZMACS every 3 weeks. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | OM Elock | ZMACS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Size | 38 MB | 51 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Chengdu Fulimeng Environmental Protection Big Data Co., Ltd.](https://appshunter.io/developer/1435884795) | [Hizima Technologies Co., Ltd](https://appshunter.io/developer/1680084643) |

## What reviewers say

### OM Elock

[App page](https://appshunter.io/ios/app/om-elock/id1567351836)

**Features:** macOS Compatibility

**In-app purchases:** none


### ZMACS

[App page](https://appshunter.io/ios/app/zmacs/id6447276726)

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

**In-app purchases:** none


## Frequently asked questions

### Is OM Elock free?

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

### Is ZMACS free?

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

### Do OM Elock or ZMACS have ads?

Neither OM Elock nor ZMACS shows ads.

### Which is updated more often, OM Elock or ZMACS?

OM Elock ships an update fortnightly, and ZMACS every 3 weeks. Most recently, OM Elock was updated on November 7, 2026 and ZMACS on November 3, 2026.

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