# GravyLensing

> GravyLensing (iPhone/iPad app by WILLIAM JOSEPH ROPER.)

- Source: https://appshunter.io/ios/app/gravylensing/id6783065795 (this page in markdown: same URL + `.md`)
- Developer: [WILLIAM JOSEPH ROPER](https://appshunter.io/developer/6783065797)
- Category: Education, Entertainment
- Price: Free
- Age rating: 4+
- Requires: iOS 16.4 · 7 MB
- Languages: American English
- Released: 2026-06-25
- Data updated: 2026-08-29
- User reviews in markdown: https://appshunter.io/ios/app/gravylensing/id6783065795/reviews.md

## What is GravyLensing?

GravyLensing brings gravitational lensing, the cosmic phenomenon where space-time bends around massive objects, into your hands. ESA's Euclid mission is mapping this effect across billions of galaxies to reveal the dark universe. Now you can explore that same physics yourself. Point your camera anywhere and watch space-time bend like light passing through a galaxy cluster.

Built on the same Singular Isothermal Ellipsoid (SIE) models astronomers use, every lens is a real galaxy cluster observed by Hubble, JWST, and Euclid, faithfully recreated on your device.

Features
• Apply scientifically accurate gravitational lensing to your live camera feed, photos, or videos
• Browse a gallery of real galaxy clusters, each with their own unique lensing signature
• Touch and drag to position the lens exactly where you want it
• Adjust distance to sweep from subtle warping to extreme Einstein rings
• Record warped video or capture still images and save them to your photo library

Inspired by ESA's Euclid mission to map the dark universe, GravyLensing puts the physics of warped spacetime in your pocket.

No ads. No data collection. Just physics.


## Version history (last 2 releases)

### 1.1.0 — 2026-08-28

• More flexibility! Choose whether gestures move the lens or the image behind it. Drag, pinch, or two-finger rotate either one.
• Hold any button to open a full menu of options.
• Import from Files as well as your camera roll.
• General bug fixes and optimisations.

### 1.0 — 2026-06-25

No release notes.

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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 2026-08-29.*