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Android TV app On Google Play

TV Calibration multi HDR

Calibrate your TV in its real HDR10, HDR10+, Dolby Vision or HLG mode.

A display calibration suite for the HDR era. TV Calibration plays small embedded trigger streams that switch your TV into its actual HDR10, HDR10+, Dolby Vision or HLG processing, then overlays pixel-exact contrast, black-level, HCFR colorimeter and alignment patterns. Fully controllable with the D-pad.

Get it on Google Play Support the app
  • Works fully offline
  • Free, no ads, no tracking
  • About 2.9 MB
TV Calibration multi HDR interface and pattern suite
5 signal modes
SDR, HDR10, HLG, HDR10+, Dolby Vision
Hardware trigger
Engages the TV's real HDR pipeline
HCFR suite
10%, 18% and full-screen probe windows
10-foot UI
D-pad remote and touch

Features

Built for accurate HDR calibration

Most Android TV calibration apps leave the TV in SDR. This one triggers the TV's real HDR modes.

Hardware HDR video mode triggers

Hardware HDR

Real hardware HDR mode triggering

Standard calibration tools draw test patterns on an 8-bit SDR surface, so the TV stays in its SDR picture mode and you cannot calibrate HDR tone mapping, peak highlights or wide colour gamut.

  • Embedded trigger streams. Small native HDR video assets (hdr10, hdr10plus, dolby, hlg) play in a hardware SurfaceView.
  • Native signal chain. When you pick a mode, the TV detects the HDMI signal flags and switches backlight, EOTF curve and picture profile to real HDR10 or Dolby Vision.
  • Transparent overlay. Patterns are drawn on a canvas over the HDR surface, so clipping, primaries and luminance are judged under real HDR conditions.
Contrast and brightness calibration bars

Contrast and black level

No clipped highlights, no crushed blacks

Wrong contrast and brightness settings blow out highlights or swallow shadow detail in dark scenes.

  • Contrast bars. Stepped bars from 90% up to reference 100% white: set contrast so every step stays distinct without blooming.
  • Brightness bars. Near-black bars from 0% to 5% keep blacks black while preserving shadow texture.
  • Colour gain. Red, green, blue, cyan, magenta and yellow ramps to balance sub-pixel drive and remove tints.
HCFR colorimeter pattern windows

Colorimeter

HCFR and optical probe windows

Ready for spectrophotometers and colorimeters (X-Rite i1Display Pro, Spyder, Klein). Windows are sized to avoid OLED automatic brightness limiter (ABL) throttling.

  • Window sizes. 10% (OLED and Mini-LED profiling), 18% (cinema gamma) and full screen (uniformity).
  • Colour spaces. Rec. 709 (sRGB/HDTV), Display P3 and Rec. 2020.
  • 10-point grayscale. 10% steps from 0% black to 100% white, plus 100% saturation targets for all six primaries and secondaries.
Screen alignment and overscan pattern

Geometry and overscan

Geometry, 1:1 pixel mapping and overscan

Many TVs crop 2.5% to 5% of the picture by default (overscan), which ruins 4K sharpness. These patterns confirm unscaled pixel mapping:

  • 1:1 pixel grid. Single-pixel line patterns reveal added sharpening or non-native scaling.
  • Overscan markers. 0%, 2.5% and 5% borders show exactly how much the TV is cropping.
  • Circular geometry. Concentric circles check the 16:9 aspect ratio for distortion. Touch UI on tablets and phones.

Pattern suite

The test pattern library

Every pattern is rendered at your screen's native resolution, with no scaling artefacts.

Contrast and highlight clipping

Set peak white without blowing out clouds, reflections and explosions.

  • Stepped white bars. Reference 100% white with 90–99% comparisons.
  • Blooming. Evaluate full-array local dimming (FALD) halos.
  • EOTF tone mapping. See hard clipping thresholds in HDR10 modes.

Brightness and shadow detail

Deep blacks while keeping detail in dark scenes.

  • Near-black bars. 0%, 1%, 2%, 3%, 4% and 5% indicators.
  • No black crush. Adjust until the 1–2% bars are just visible in a dark room.
  • Backlight glow. Spot raised black levels and clouding.

Colour gain and saturation

Balance colour drives to remove casts and unnatural skin tones.

  • 6-colour bars. Red, green, blue, cyan, magenta, yellow.
  • Sub-pixel gain. 2-point or multi-point white balance.
  • Clipping by colour. Detect clipping in saturated red or blue.

HCFR colorimeter windows

For calibration software and optical probes.

  • 10% window. Avoids OLED thermal drop and ABL dimming.
  • Grayscale ladder. 10% steps from 0% black to 100% white.
  • Gamut targets. Rec. 709, Display P3 and Rec. 2020.

Alignment, sharpness and 1:1 pixel

Turn off artificial post-processing and confirm 1:1 rendering.

  • 1:1 pixel check. Single-pixel lines expose haloing and sharpening.
  • Overscan detection. 0%, 2.5% and 5% markers to turn off "16:9 zoom".
  • Geometry. Circles check for aspect distortion.

Burn-in and panel uniformity

Inspect the panel with full-screen 5–100% fields.

  • 5% gray. The standard test for OLED near-black banding.
  • Dirty screen effect. Full-screen fields reveal uniformity flaws.
  • Dead and stuck pixels. Cycle through pure red, green, blue and white.

Specifications

Requirements and compatibility

Application ID
com.askit.tvcalibrationPackage identifier on Google Play and Android TV.
HDR signal triggers
HDR10, HDR10+, Dolby Vision, HLGEmbedded video triggers routed through a hardware SurfaceView to switch the TV into real HDR picture mode.
Price and privacy
Free, no ads, no trackingNo ads, analytics, telemetry or third-party SDKs. Fully functional offline.
Size
About 2.9 MBSelf-contained, including the embedded video triggers.
Android
Android 8.0 to 16API level 26 to 36. Android TV, Google TV, Android tablets and phones.
Colour
RGBA_F16 and wide colour gamutCOLOR_MODE_WIDE_COLOR_GAMUT and COLOR_MODE_HDR with Rec. 2020 and Display P3.
Permissions
NoneNo network, storage or account access.
Display
HDR-capable display and HDMI chainHardware HDR mode needs a display and HDMI chain that can process high-dynamic-range video.

Get started

Calibrate in three steps

  1. 01

    Install from Google Play

    Open the Google Play Store on your Android TV, Google TV or mobile device and search for "TV Calibration multi HDR", or use the direct link.

    Open in Google Play
  2. 02

    Launch on your screen

    Start the app from your launcher. It runs full screen, keeps the display awake and responds to the D-pad.

  3. 03

    Calibrate your display

    Choose a signal mode (SDR, HDR10, HLG, HDR10+, Dolby Vision) and tune your TV's picture settings with the contrast, brightness and colorimeter patterns.

Comparison

TV Calibration vs other ways to get HDR test patterns

HDR patterns only help if the TV is really in HDR mode. These are the usual options and what each one needs.

TV Calibration vs other ways to get HDR test patterns
Compared onTV Calibration multi HDRAndroid TV appNetflix test patternsInside the Netflix appCalibration discs and filese.g. Spears & Munsil, DVSGeneric pattern appsTypical Android apps
Puts the TV in real HDRHDR10, HDR10+, Dolby Vision and HLG triggersHDR10 and Dolby Vision versionsYes, from a capable playerUsually drawn in SDR
Pattern rangeContrast, black level, colour, HCFR windows, geometry, uniformityA few brightness and contrast checksFull reference suitesBasic SDR patterns
Colorimeter windowsFor HCFR and probes10%, 18% and full field, Rec. 709 / P3 / Rec. 2020NoYesRarely
CostFreeNeeds a Netflix subscriptionPaid disc or downloadFree, often with ads
Extra hardwareNone: runs on the TV or streaming boxNoneUHD Blu-ray or media playerNone
Works offlineYes, no network permission at allStreams from NetflixYesVaries

Based on public product information, checked October 2026. Netflix is a trademark of Netflix, Inc.; Spears & Munsil and Diversified Video Solutions are trademarks of their owners. TV Calibration multi HDR is an independent AskIT app.

Buyer's guide

Which calibration source fits you?

A pattern source is only half of calibration; your eyes or a colorimeter are the other half.

Choose TV Calibration if…

You calibrate with an Android TV or Google TV device in the chain.

  • Real HDR. You want to set HDR10, Dolby Vision or HLG picture modes, not only SDR.
  • No extra kit. You do not want to buy a disc or a UHD player.
  • Probe-ready. You use HCFR with a meter and need clean windows.

Choose Netflix test patterns if…

You want a quick sanity check.

  • Quick check. You already pay for Netflix and only want to check brightness in its own playback chain.

Choose a calibration disc if…

You calibrate professionally.

  • Reference grade. You need a curated reference suite played from a UHD Blu-ray player.
  • Specific formats. You need format-specific test material beyond the usual patterns.

Add calibration software if…

You own a colorimeter.

  • Measure. HCFR or commercial software reads the meter; TV Calibration supplies the windows to measure.

Use cases

When to reach for the patterns

Setting up a new TV

Out-of-the-box picture modes are tuned for showrooms. Set contrast, black level and overscan in ten minutes.

HDR looks dim or washed out

Check whether the TV really switches to HDR, then set tone mapping and peak brightness in that mode.

Checking a panel before the return window ends

Look for OLED near-black banding, dirty-screen effect and dead pixels with full-screen fields.

After a firmware update

Updates can reset picture settings; re-check them in a few minutes.

Colorimeter profiling

Feed HCFR with 10% windows that avoid OLED brightness limiting.

Projectors and screens

Geometry, 1:1 pixel and overscan patterns for alignment and keystone checks.

Guides

Guides

Guide

How to calibrate HDR on Android TV and Google TV

Step by step: get the TV into its real HDR mode, then set picture mode, contrast, black level and colour without a meter.

Read

FAQ

Questions about TV Calibration

Why can most Android TV calibration apps not calibrate HDR?

They draw test patterns on an 8-bit SDR surface, so the TV stays in its SDR picture mode. TV Calibration plays small embedded HDR trigger streams so the TV switches to its real HDR processing, then draws the patterns on top.

Which HDR formats are supported?

SDR, HDR10, HDR10+, Dolby Vision and HLG. Hardware HDR mode needs a display and HDMI chain that can process high-dynamic-range video.

Can I use a colorimeter or HCFR?

Yes. It has 10%, 18% and full-screen probe windows, a 10-point grayscale and saturation targets in Rec. 709, Display P3 and Rec. 2020, for probes such as the X-Rite i1Display Pro, Spyder and Klein.

How do I set contrast and brightness correctly?

Raise contrast until the 90–100% white bars stay distinct without blooming. For brightness, use the 0–5% near-black bars in a dark room and adjust until the 1–2% bars are just visible.

Does it need an internet connection or permissions?

No. It works fully offline, asks for no permissions (no network, storage or account access) and is about 2.9 MB.

Which devices are supported?

Android TV, Google TV, Android tablets and phones running Android 8.0 to 16 (API level 26 to 36).

Support independent display calibration

TV Calibration multi HDR is free, with no ads, no tracking and no network access. Donations fund the HDR trigger streams, HCFR colorimeter windows and new test patterns.

Support TV Calibration Get it on Google Play

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