# Digital Gel — Extract & apply gels digitally

> Extract & apply gels digitally (iPhone/iPad app by TIMO TAPIO HAAPASAARI.)

- Source: https://appshunter.io/ios/app/digital-gel/id6787510387 (this page in markdown: same URL + `.md`)
- Developer: [TIMO TAPIO HAAPASAARI](https://appshunter.io/developer/1896692908)
- Category: Utilities
- Price: $3.99
- Age rating: 4+
- Requires: iOS 17.0 · 2 MB
- Languages: American English
- Released: 2026-08-13
- Data updated: 2026-08-27
- User reviews in markdown: https://appshunter.io/ios/app/digital-gel/id6787510387/reviews.md

## What is Digital Gel?

Digital Gel is a precision color tool for gaffers, DPs, and lighting programmers.

Meter a fixture bare, then meter it again through a gel. Digital Gel captures the
difference as a color ratio — a "digital gel" — that you can apply to any other
light and read back as CIE x,y coordinates to enter on the console.

WHAT IT DOES
• Extract a gel from two spectrometer readings (bare + through the gel).
• Apply that gel — or a stack of gels — to any target light.
• Get the result as x,y for the console, plus CCT, tint (in CC and Δuv), and
  mired shift.
• See everything on a CIE 1931 chromaticity diagram with the Planckian locus,
  color-temperature ticks, and optional Rec.709 / P3 / Rec.2020 gamut overlays.

BUILT FOR THE SET
• Enter light as x,y, as a color temperature (5600), or temperature with tint
  (3200 -2).
• Save a library of gels and custom sources; mark favorites; search your list.
• Choose CAT02 (recommended) or raw XYZ adaptation math.
• A transmission read of each gel's red / green / blue balance at a glance.

PRIVATE BY DESIGN
No account, no network, no data collected. Everything stays on your device.

Digital Gel works in chromaticity, so it matches color points, not full spectra —
when metamerism matters on set, trust your meter.


## Version history (last 1 release)

### 1.0 — 2026-08-13

No release notes.

## More apps by TIMO TAPIO HAAPASAARI

- [TubeLoad](https://appshunter.io/ios/app/tubeload/id6769845197)
- [Phone Trigger](https://appshunter.io/ios/app/phone-trigger/id6786599707)

All apps by TIMO TAPIO HAAPASAARI: https://appshunter.io/developer/1896692908

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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 2026-08-27.*