# ZMACS vs Smart Compass

The clearest difference is in-app purchases: ZMACS at none against Smart Compass's 4. Smart Compass's advantage is update cadence (weekly vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Smart Compass sells 4 in-app purchases, starting at $9.99 per 7 days. ZMACS asks for nothing beyond the download.

ZMACS ships an update every 3 weeks, Smart Compass weekly. The most recent releases landed on November 3, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | ZMACS | Smart Compass |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Size | 51 MB | 70 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hizima Technologies Co., Ltd](https://appshunter.io/developer/1680084643) | [TapWyze Global LLC](https://appshunter.io/developer/1869607993) |

## What reviewers say

### ZMACS

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

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

**In-app purchases:** none


### Smart Compass

[App page](https://appshunter.io/ios/app/smart-compass-bubble-meter/id6749172827)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $9.99 | per 7 days |
| Monthly Subscription | $14.99 | per month |
| Offer Yearly | $29.99 | per year |
| Yearly Subscription | $39.99 | per year |


## Frequently asked questions

### Is ZMACS free?

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

### Is Smart Compass free?

Smart Compass is free to download, with in-app purchases available.

### Do ZMACS or Smart Compass have ads?

Neither ZMACS nor Smart Compass shows ads.

### Which is updated more often, ZMACS or Smart Compass?

ZMACS ships an update every 3 weeks, and Smart Compass weekly. Most recently, ZMACS was updated on November 3, 2026 and Smart Compass on November 8, 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.*