# Propile Viewer vs SkyMap OnSite

The clearest difference is update cadence: SkyMap OnSite at every 5 months against Propile Viewer's every 11 months. Propile Viewer's advantage is device support (3 vs 1) and iOS requirement (11.0 vs 17.0). On price, 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.

Propile Viewer ships an update every 11 months, SkyMap OnSite every 5 months. The most recent releases landed on September 15, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Propile Viewer | SkyMap OnSite |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 5 months** |
| Size | 36 MB | 5 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Pålanalys AB](https://appshunter.io/developer/1502132969) | [SkyMap Innovations AB](https://appshunter.io/developer/1423578183) |

## What reviewers say

### Propile Viewer

[App page](https://appshunter.io/ios/app/propile-viewer/id1534915998)

**Features:** macOS Compatibility

**In-app purchases:** none


### SkyMap OnSite

[App page](https://appshunter.io/ios/app/skymap-onsite/id6748066119)

**In-app purchases:** none


## Frequently asked questions

### Is Propile Viewer free?

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

### Is SkyMap OnSite free?

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

### Do Propile Viewer or SkyMap OnSite have ads?

Neither Propile Viewer nor SkyMap OnSite shows ads.

### Which is updated more often, Propile Viewer or SkyMap OnSite?

Propile Viewer ships an update every 11 months, and SkyMap OnSite every 5 months. Most recently, Propile Viewer was updated on September 15, 2026 and SkyMap OnSite on September 8, 2026.

---

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