# HD Test Patterns

> HD Test Patterns (iPhone/iPad app by Markus Mehlau.)

- Source: https://appshunter.io/ios/app/hd-test-patterns/id1225888213 (this page in markdown: same URL + `.md`)
- Developer: [Markus Mehlau](https://appshunter.io/developer/1783144554)
- Category: Utilities, Photo & Video
- Price: $0.99
- Age rating: 4+
- Requires: iOS 11.0 · 9 MB
- Languages: American English
- Released: 2017-04-12
- Data updated: 2026-05-17
- User reviews in markdown: https://appshunter.io/ios/app/hd-test-patterns/id1225888213/reviews.md

## What is HD Test Patterns?

Default picture settings of TVs and projectors often make them look great on the sales floor but at the same time they also create a distorted version of what the film director had in mind. Proper screen calibration can restore the image but it also requires calibration equipment and software. Fortunately basic calibration can be performed with simple test patterns and the human eye. This app provides such test patterns and a short description how to use each one.
For SDR calibration only.


## Version history (last 4 releases)

### 1.0.4 — 2018-01-02

- New and updated test patterns
- Minor interface refinements

### 1.0.3 — 2017-04-18

Minor interface refinements

### 1.0.2 — 2017-04-13

Minor interface refinements

### 1.0 — 2017-04-12

No release notes.

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## More apps by Markus Mehlau

- [Pastor](https://appshunter.io/ios/app/pastor/id547894536)
- [NAD OSD](https://appshunter.io/ios/app/nad-osd/id1326481910)

All apps by Markus Mehlau: https://appshunter.io/developer/1783144554

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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 2026-05-17.*