# Isolux — Pop one color, grey the rest

> Pop one color, grey the rest (iPhone/iPad app by 永 张.)

- Source: https://appshunter.io/ios/app/isolux/id6792707497 (this page in markdown: same URL + `.md`)
- Developer: [永 张](https://appshunter.io/developer/1806535769)
- Category: Photo & Video
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 26.0 · 1 MB
- Languages: American English, Chinese (Simplified, China)
- Released: 2026-07-29
- Data updated: 2026-08-16
- User reviews in markdown: https://appshunter.io/ios/app/isolux/id6792707497/reviews.md

## What is Isolux?

Isolux makes one colour pop while turning everything else to greyscale — in seconds, entirely on your device.

Pick a photo, drag the colour wheel to the hue you want to keep, and watch the selective colour effect appear in real time. Tap a preset (Red, Orange, Gold, Green, Sky, Purple) for instant results. Adjust the range slider to widen or narrow the preserved colour band. Toggle before/after to compare. Share directly to any app.

Every step runs locally — no account, no cloud upload, no internet required.

Includes:
• Tactile colour wheel with drag-to-select hue
• Six one-tap presets
• Adjustable hue range
• Real-time preview
• Before/after comparison
• Edit history
• Share via any app

Pro (one-time unlock):
• Batch — process up to 20 photos at once with the same settings
• Save to Photos at full original resolution
• Unlimited edit history

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Isolux Pro | $2.99 | one-time |



## Version history (last 1 release)

### 1.0 — 2026-07-30

No release notes.

## More apps by 永 张

- [PhotoBridge: NAS & S3 Backup](https://appshunter.io/ios/app/photobridge-nas-and-s3-backup/id6754593211)
- [SipNote: Caffeine Tracker](https://appshunter.io/ios/app/sipnote-caffeine-tracker/id6759808330)
- [LoopSnap: GIF & Sticker Maker](https://appshunter.io/ios/app/loopsnap-gif-and-sticker-maker/id6763897111)
- [IDKit: Passport & ID Photos](https://appshunter.io/ios/app/idkit-passport-and-id-photos/id6769530845)
- [ShotKit: Screenshot Studio](https://appshunter.io/ios/app/shotkit-screenshot-studio/id6777430919)
- [NearBeam: Local File Transfer](https://appshunter.io/ios/app/nearbeam-local-file-transfer/id6777431459)

All apps by 永 张: https://appshunter.io/developer/1806535769

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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 2026-08-16.*