# GoldenHorizon — Sun and sky planner

> Sun and sky planner (iPhone/iPad app by Robert Corbin.)

- Source: https://appshunter.io/ios/app/goldenhorizon/id6771019253 (this page in markdown: same URL + `.md`)
- Developer: [Robert Corbin](https://appshunter.io/developer/1890247992)
- Category: Photo & Video
- Price: $3.99
- Age rating: 4+
- Requires: iOS 17.0 · 3 MB
- Languages: American English
- Released: 2026-05-20
- Data updated: 2026-08-30
- User reviews in markdown: https://appshunter.io/ios/app/goldenhorizon/id6771019253/reviews.md

## What is GoldenHorizon?

GoldenHorizon is a sun, moon, and sky planner for outdoor photographers, hikers, drone pilots, eclipse chasers, astronomy enthusiasts, and anyone timing work around natural light.

The app computes planning data locally so you can understand the next light window, moon condition, sky event, or shadow direction before you head out.

Core tools:
- Today view for sunrise, sunset, twilight, golden hour, and blue hour
- Moon phase, illumination, moonrise, and moonset details
- AR-style sky arc planner for lining up a scene
- Eclipse, planet, ISS, meteor, aurora, and Bortle references
- Milky Way visibility scoring
- Star-trail and timelapse planning calculators
- Photographer mode for focal length, field of view, and alignment work
- Shadow and drone-shadow planners for sun-angle decisions

GoldenHorizon uses established solar, lunar, and sky-position formulas for practical field planning. It is built for fast decisions: where to stand, when to wait, and what the light will do next.

Saved locations and plans stay on the device. Location access is used to compute local sky data. Camera access is used only when the AR sky planner is opened.


## Version history (last 5 releases)

### 2.2 — 2026-08-20

Expands the local sun, moon, and sky planning bench with field-focused light windows, lunar context, sky-event references, and shadow-planning tools. Saved locations and plans remain on device.

### 2.1 — 2026-08-06

FieldCommand: Multi-location light windows, route buffers, and a field call sheet.

- Lock locations, date, time zone, target direction, and access limits
- Add solar, lunar, twilight, shadow, and focal-length objectives
- Build travel, setup, safety, and teardown buffers around each window
- Define a backup scene and equipment fallback for every critical shot
- Export a call sheet with calculated data and manual condition checks

### 2.0.1 — 2026-06-26

This update sharpens the interface: the iPad layout now uses a centered, comfortable reading width instead of stretching edge to edge, plus small display fixes. iPhone is unchanged; still fully on-device.

### 2.0 — 2026-06-21

GoldenHorizon 2.0 — six new pro tools for sky and astrophotography planning, still 100% offline.

• Exposure Calculator: ND long-exposure with stackable filters, EV, Sunny-16 table, and an equivalent-exposure solver.
• Moon Distance & Size: Meeus distance, supermoon scale, angular diameter, and optical libration with limb guidance.
• Find-When Solver: the days the sun or moon rises or sets at the bearing you want.
• Panorama Planner: rows, columns, pan/tilt steps, and output megapixels for your lens.
• Stacking Planner: how many subs for a target signal-to-noise or a time budget, with deep-sky presets.
• Sky Almanac: equinoxes, solstices, cross-quarters, and full/new moons with blue-moon flags.

All astronomy and optics math is computed on-device and oracle-verified. No account, no network — everything stays on your device.

### 1.2 — 2026-06-15

What's New — GoldenHorizon 1.1

Night Exposure Calculator (NPF Rule). Know the exact maximum shutter speed before stars smear into trails on your specific camera. The NPF Rule (Frédéric Michaud / Société Astronomique du Havre) accounts for your sensor's pixel pitch, aperture, and the sky declination of your target — not just focal length. Pick your camera body from the 36-body library, set aperture and focal length, choose a sky target (Milky Way core, Orion, Andromeda, Pleiades, or free-enter any declination), and read the NPF limit alongside classic 500 and 600 rule estimates. The recommended shutter is rounded down to the nearest real camera setting (1 s – 30 s ladder) so you can dial it in on location.

Hyperfocal Distance Calculator. Find the precise focus distance where foreground to infinity is acceptably sharp. Choose camera body, focal length, aperture, and circle-of-confusion precision — standard (÷1500) for general use, conservative (÷1730) for 24 MP+ sensors, or fine (÷2000) for 40 MP medium-format bodies. A live focus-distance slider shows the near and far depth-of-field limits updating in real time, with a success banner when you reach the hyperfocal point. Tap the m/ft toggle to switch between metres and feet.

## More apps by Robert Corbin

- [Daily Word Journey](https://appshunter.io/ios/app/daily-word-journey/id6761548266)
- [Hush Secret Text](https://appshunter.io/ios/app/hush-secret-text/id6761658175)
- [Renew Guard](https://appshunter.io/ios/app/renew-guard/id6761755447)
- [Receipt to PDF](https://appshunter.io/ios/app/receipt-to-pdf/id6761782025)
- [Route Your Pay](https://appshunter.io/ios/app/route-your-pay/id6761783719)
- [Tip Arbiter](https://appshunter.io/ios/app/tip-arbiter/id6761786879)

All apps by Robert Corbin: https://appshunter.io/developer/1890247992

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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 2026-08-30.*