# TrackSat vs Apphemeride Precise Astronomy

The clearest difference is ads: Apphemeride Precise Astronomy at none against TrackSat's shown. TrackSat's advantage is update cadence (daily vs every 4 weeks) and iOS requirement (15.0 vs 26.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. TrackSat sells 2 in-app purchases, starting at $3.99 per month and Apphemeride Precise Astronomy sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

TrackSat ships an update daily, Apphemeride Precise Astronomy every 4 weeks. The most recent releases landed on November 9, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | TrackSat | Apphemeride Precise Astronomy |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Daily** | Every 4 weeks |
| Monetization | — | Free |
| Size | 21 MB | 442 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Luc Python](https://appshunter.io/developer/1893142373) | [Csaba Lengyel](https://appshunter.io/developer/1888397396) |

## What reviewers say

### TrackSat

[App page](https://appshunter.io/ios/app/tracksat/id6762151882)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TrackSat Pro | $3.99 | per month |
| TrackSat Pro | $29.99 | per year |


### Apphemeride Precise Astronomy

[App page](https://appshunter.io/ios/app/apphemeride-precise-astronomy/id6776641899)

This app provides precise astronomical data for sky analysis, including eclipses, Moon motion, and planetary positions. It offers location-based calculations and visual tools to understand celestial events and their visibility.

**Highlights:** Precise sky analysis, Eclipse and Moon motion tracking, Location-based celestial calculations, Horizon Tracker for celestial body movement, Detailed planetary and solar system data, Solar and lunar eclipse simulations, Configurable data display

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3-day Trial | Free | one-time |
| Apphemeride Full Unlock | $49.99 | one-time |


## Frequently asked questions

### Is TrackSat free?

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

### Is Apphemeride Precise Astronomy free?

Apphemeride Precise Astronomy is free to download, with in-app purchases available.

### Do TrackSat or Apphemeride Precise Astronomy have ads?

TrackSat shows ads; Apphemeride Precise Astronomy does not.

### Which is updated more often, TrackSat or Apphemeride Precise Astronomy?

TrackSat ships an update daily, and Apphemeride Precise Astronomy every 4 weeks. Most recently, TrackSat was updated on November 9, 2026 and Apphemeride Precise Astronomy on November 7, 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.*