# HLG to HDR — HLG/PQ photos to Adaptive HDR

> HLG/PQ photos to Adaptive HDR (iPhone/iPad app by 北京猫猫可能科技有限公司.)

- Source: https://appshunter.io/ios/app/hlg-to-hdr/id6808515100 (this page in markdown: same URL + `.md`)
- Developer: [北京猫猫可能科技有限公司](https://appshunter.io/developer/6808515102)
- Category: Photo & Video, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 26.0 · 9 MB
- Languages: American English, Japanese, Chinese (Simplified, China), Chinese (Traditional, Taiwan)
- Released: 2026-09-10
- Data updated: 2026-10-15

## What is HLG to HDR?

HLG to HDR — the HDR photos your iPhone and iPad can actually show

Shoot HLG or HDR PQ, and the camera's HDR file looks like a flat photograph in most apps. HLG to HDR converts it into Adaptive gainmap HDR HEIC: an ordinary-looking photograph on any screen, with the sky, window light and reflections coming back on an HDR display.

PHOTO LIBRARY — FREE, AND THE WAY WE RECOMMEND
• Scanning reads the library index only; it never starts by pulling your whole iCloud library down to the device.
• Photos whose originals live in iCloud are listed as iCloud candidates first; only what you select is downloaded, and only when you convert it.
• Results can be written back to the library, or exported to a folder.
• Importing from the Photo Library is free, permanently: scanning, conversion, write-back to the library, export to a folder and every setting.
• You choose which formats the scan looks at. HEIF is on by default; HEIC — the iPhone default and the most common format in most libraries — is off by default because it makes the scan much slower. JPEG is its own switch.
• Photos already scanned are much faster next time, and you can skip the rest of a scan at any time.

IMPORTING FROM FILES — UNLOCKED WITH A ONE-TIME PURCHASE
• Pick HLG / HDR PQ files (HIF / HEIF / JPEG) from the Files app. Converted files are saved in this app's folder in Files, inside a new timestamped subfolder; existing files are not overwritten.
• This is unlocked with a one-time purchase (Pro). Not buying it does not affect the Photo Library path.

PRO — ONE-TIME, NOT A SUBSCRIPTION
• A non-consumable one-time purchase. It does not auto-renew.
• Not charged per photo: 1 photo or 100 photos, the same price.
• Family Sharing: if it is enabled for this app on the App Store, the purchase can be shared with your family. "Restore Purchase" recovers it on a new device.
• Failures, cancellations and restores each show a plain-language result.

WHAT IT DOES
• One file, two behaviours: correct on any screen, real highlights on an HDR display.
• Highlights keep their detail instead of flattening to white.
• The shooting data comes along: camera, lens, GPS and exposure into the converted file.
• Files that already carry a gain map are detected and skipped.
• Batch a shoot from the library: a queue, multi-select and a stop button; finished photos stay finished.
• The SDR layer follows the system's own tone mapping, so the flat version still looks like your photograph, not a washed-out conversion.
• 60-megapixel-class files convert one at a time inside a fixed memory budget.

PRIVACY
No account, no sign-in, no analytics, no upload. Photos are processed on your device and there is no server to receive them. When an original lives in iCloud, only the photos you convert are downloaded — downloaded, never uploaded.

FORMATS
Input: HLG and HDR PQ stills in HIF / HEIF, plus HDR PQ JPEG. What is inside the file decides, not the file name. Output: HEIC with an adaptive gain map.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

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


## Is HLG to HDR safe?

Not enough ratings yet to assess HLG to HDR.

## Is HLG to HDR legit?

HLG to HDR has limited verification signals. The AppsHunter Legitimacy Score for HLG to HDR is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0 — 2026-10-14

No release notes.

## More apps by 北京猫猫可能科技有限公司

- [360PV](https://appshunter.io/ios/app/360pv/id6811492356)

All apps by 北京猫猫可能科技有限公司: https://appshunter.io/developer/6808515102

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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 2026-10-15.*