# Sort Sol — Starling murmurations in AR

> Starling murmurations in AR (iPhone/iPad app by Bo Kalvslund.)

- Source: https://appshunter.io/ios/app/sort-sol/id6809516770 (this page in markdown: same URL + `.md`)
- Developer: [Bo Kalvslund](https://appshunter.io/developer/572272193)
- Category: Entertainment, Education
- Price: $0.99
- Age rating: 4+
- Requires: iOS 18.0 · 10 MB
- Languages: American English, Danish, Dutch, German (Germany)
- Released: 2026-09-12
- Data updated: 2026-10-03
- User reviews in markdown: https://appshunter.io/ios/app/sort-sol/id6809516770/reviews.md

## What is Sort Sol?

Sort Sol — "black sun" — is one of northern Europe's great natural spectacles: tens of thousands of starlings gathering over the Danish Wadden Sea each spring and autumn, dancing across the evening sky in rolling black bands.

This app simulates it. There is no video in here — the flock is computed while you watch, thirty times a second, bird by bird.

IN YOUR OWN SKY
Point the phone up, tap, and the flock is standing in your own view. The sun's position is worked out from the time and the place you're in, so the light on the wings matches the evening you're actually standing in. You can also watch it without the camera, against the app's own dusk sky.

NO BIRD IS STEERING
Each bird watches its seven nearest neighbours and matches them. That's all. The bands, the waves, the sharp edge and the sudden turns emerge on their own once tens of thousands do it at once — exactly as they do over the marsh. It never looks the same twice.

THE EAGLE
Send the white-tailed eagle hunting and panic spreads through the flock as a wave. A hole opens around it, the flock compresses and stretches — and afterwards slowly finds its shape again.

DUSK
Send the flock down into the reed bed for the night and watch it draw together into a spiralling funnel. Call it back up whenever you like.

RECORD AND SHARE
Capture fifteen seconds of your own black sun, save it to Photos, and share it.

SOUND
The chatter of the roost, if you want it. It respects the silent switch and mixes with whatever you're already playing.

TURN THE DIALS
Flock size, flight speed, cohesion, restlessness, wind, the eagle's reach, the shape of the reed bed. Adjust all of it — or none of it. One tap puts everything back to our own Sort Sol.

No account, no sign-in, no data leaving the phone. The camera and your location are used only to show the flock and to work out the sunlight.

AR mode requires a camera and an ARKit-capable device.

Photos by James Wainscoat on Unsplash
Image by AvnesZ on Pixabay


## Version history (last 3 releases)

### 1.2 — 2026-09-24

The white-tailed eagle hunts like a real raptor
• It stoops through the flock, climbs away and returns from a new angle – never twice from the same side.
• It picks out one starling in the densest part of the flock, so you can see every attack.
• The starlings see it coming: the flock opens and splits around the dive, and birds above and below scatter in opposite directions.
• Birds bank away from the eagle and pass the movement on, so the alarm ripples out through the flock.

### 1.1 — 2026-09-14

Against the dusk sky
• “Flock size” now does what it says: turn it up and the flock grows on screen.
• Turn your phone sideways and the flock fills the width – and lands just above the buttons, where you can see it.
• “Camera distance” is now “Distance to the flock”, with a clearer explanation.

In AR
• The flock stays where you put it. Tapping the sky afterwards no longer moves it.
• The hint for placing the flock appears again every time you open AR.

### 1.0 — 2026-09-12

No release notes.

## More apps by Bo Kalvslund

- [Take a break - Mindfulness](https://appshunter.io/ios/app/take-a-break-mindfulness/id626874035)
- [Anton and Mille.](https://appshunter.io/ios/app/anton-and-mille/id686908292)
- [My Coton Dog](https://appshunter.io/ios/app/my-coton-dog/id862552921)
- [Calculator 3D](https://appshunter.io/ios/app/calculator-3d/id879830848)
- [Party on Mallorca](https://appshunter.io/ios/app/party-on-mallorca/id881799200)
- [Spirit Level Area 4](https://appshunter.io/ios/app/spirit-level-area-4/id896593057)

All apps by Bo Kalvslund: https://appshunter.io/developer/572272193

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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 2026-10-03.*