# Sentemeter Pro vs Sky Horizon QMS

The clearest difference is iOS requirement: Sentemeter Pro at 15.1 against Sky Horizon QMS's 18.0. 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.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Sentemeter Pro | Sky Horizon QMS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Size | 38 MB | 19 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [LUNAR ROCK TECHNOLOGIES FZCO](https://appshunter.io/developer/1451167046) | [Sky Software](https://appshunter.io/developer/1461696206) |

## What reviewers say

### Sentemeter Pro

[App page](https://appshunter.io/ios/app/sentemeter-pro/id1451167047)

**Features:** macOS Compatibility

**In-app purchases:** none


### Sky Horizon QMS

[App page](https://appshunter.io/ios/app/sky-horizon-qms/id1547234827)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sentemeter Pro free?

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

### Is Sky Horizon QMS free?

Sky Horizon QMS is free to download, with no in-app purchases.

### Do Sentemeter Pro or Sky Horizon QMS have ads?

Neither Sentemeter Pro nor Sky Horizon QMS shows ads.

### Which is updated more often, Sentemeter Pro or Sky Horizon QMS?

Sentemeter Pro ships an update every 2 months, and Sky Horizon QMS every 2 months. Most recently, Sentemeter Pro was updated on November 2, 2026 and Sky Horizon QMS 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.*