# AstroPup Horizon — Automatic & Accurate Horizons

> Automatic & Accurate Horizons (iPhone/iPad app by Aaron Freimark.)

- Source: https://appshunter.io/ios/app/astropup-horizon/id6753884236 (this page in markdown: same URL + `.md`)
- Developer: [Aaron Freimark](https://appshunter.io/developer/1533614349)
- Category: Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 26.0 · 115 MB
- Languages: American English, French (France), German (Germany), Hungarian, Italian, Japanese, European Spanish
- Released: 2026-06-02
- Data updated: 2026-06-20
- User reviews in markdown: https://appshunter.io/ios/app/astropup-horizon/id6753884236/reviews.md

## What is AstroPup Horizon?

AstroPup Horizon allows rapid and accurate capture of your local horizon, using your iPhone or iPad's on-device Neural Engine. No need to capture individual points, just capture a panorama and let machine learning determine figure it out. Magnetometer calibration gets a boost if you include the sun in your image; we'll improve calibration with astrophysics. If needed, make surgical edits or repaint the horizon line within the app. After capture, you can export the data astronomy software such as N.I.N.A., Stellarium, Cartes du Ciel, and SkySafari, and our own AstroPup Sky.


## Version history (last 3 releases)

### 1.3 — 2026-06-16

- N.I.N.A. and Cartes du Ciel exports fixed: the HRZ export now produces a single, correctly-named HRZ file instead of two generic text files.
- Export confirmation: every export now shows a brief "Export completed" confirmation once the share finishes.

### 1.2 — 2026-06-12

In-app documentation

### 1.1 — 2026-06-02

No release notes.

## More apps by Aaron Freimark

- [INDIGO to GO](https://appshunter.io/ios/app/indigo-to-go/id1533616268)
- [AstroPup View](https://appshunter.io/ios/app/astropup-view/id6752028730)
- [AstroPup Sky](https://appshunter.io/ios/app/astropup-sky/id6764730162)

All apps by Aaron Freimark: https://appshunter.io/developer/1533614349

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-20.*