TrueHz: Hz & Refresh Rate Test
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Seeking fast processing? TrueHz: Hz & Refresh Rate Test is the answer. Designed by Nordic Node, this software integrates perfectly with APPzone. Browse related info at Tools.
All You Need To This Latest Version TrueHz: Hz & Refresh Rate Test
TrueHz — Refresh Rate Test & Hz Checker
See your screen's real refresh rate, measured live on your device — never guessed from its model name. Every number comes from a live Android API or a real measurement. If a value can't be read, TrueHz says so instead of making it up.
WHAT YOU CAN DO
• Live Hz meter — see the frame rate the system is actually delivering right now, smoothed over about a second, with frame-time jitter and sample count.
• Display report — the active mode, every supported mode (resolution + Hz), the refresh-rate range, and a tiered VRR breakdown: multiple rates per resolution, seamless switching, and Android 16 adaptive-refresh (ARR) capability — each reported separately.
• Visual smoothness test — a sweeping bar that lets you feel the difference between refresh rates. Request a rate and TrueHz verifies what the system actually applied, telling you the result either way.
• Extended measurement — run a longer test for the lowest, median and highest frame rate, worst jitter and sample count, all measured live across the run.
• Info & FAQ — plain-language answers about Hz, VRR, LTPO and why 90/120 Hz feels smoother.
HOW IT MEASURES (the part that matters)
The live rate uses Android's frame-timing callback (Choreographer). Supported modes, the active mode and the OS-reported rate come from the Display API. Seamless-switch and adaptive-refresh capabilities come from getAlternativeRefreshRates (Android 12+) and hasArrSupport (Android 16+). No device database, no model-name guessing, no value that defaults to "supported" on an error.
WHY THE MEASURED RATE CAN BE LOWER THAN THE ADVERTISED Hz
Because the number is real. The system lowers the rate to save power when little is moving, in power-save mode, when the device is warm, or when an app only draws slowly. Advertised Hz is the maximum the hardware can reach — not what is on screen every second.
WHO IT'S FOR
Anyone verifying a 60, 90, 120 or 144 Hz screen, an LTPO or adaptive-refresh panel — gamers, used-phone buyers, and reviewers who want the measured truth, not a spec sheet.
PRIVACY
The measurement features work fully offline and read nothing personal. Network access is only used for ads and the consent form. You can remove ads with a one-time purchase.
Works on Android 8.0+ and measures whatever your device exposes.
See your screen's real refresh rate, measured live on your device — never guessed from its model name. Every number comes from a live Android API or a real measurement. If a value can't be read, TrueHz says so instead of making it up.
WHAT YOU CAN DO
• Live Hz meter — see the frame rate the system is actually delivering right now, smoothed over about a second, with frame-time jitter and sample count.
• Display report — the active mode, every supported mode (resolution + Hz), the refresh-rate range, and a tiered VRR breakdown: multiple rates per resolution, seamless switching, and Android 16 adaptive-refresh (ARR) capability — each reported separately.
• Visual smoothness test — a sweeping bar that lets you feel the difference between refresh rates. Request a rate and TrueHz verifies what the system actually applied, telling you the result either way.
• Extended measurement — run a longer test for the lowest, median and highest frame rate, worst jitter and sample count, all measured live across the run.
• Info & FAQ — plain-language answers about Hz, VRR, LTPO and why 90/120 Hz feels smoother.
HOW IT MEASURES (the part that matters)
The live rate uses Android's frame-timing callback (Choreographer). Supported modes, the active mode and the OS-reported rate come from the Display API. Seamless-switch and adaptive-refresh capabilities come from getAlternativeRefreshRates (Android 12+) and hasArrSupport (Android 16+). No device database, no model-name guessing, no value that defaults to "supported" on an error.
WHY THE MEASURED RATE CAN BE LOWER THAN THE ADVERTISED Hz
Because the number is real. The system lowers the rate to save power when little is moving, in power-save mode, when the device is warm, or when an app only draws slowly. Advertised Hz is the maximum the hardware can reach — not what is on screen every second.
WHO IT'S FOR
Anyone verifying a 60, 90, 120 or 144 Hz screen, an LTPO or adaptive-refresh panel — gamers, used-phone buyers, and reviewers who want the measured truth, not a spec sheet.
PRIVACY
The measurement features work fully offline and read nothing personal. Network access is only used for ads and the consent form. You can remove ads with a one-time purchase.
Works on Android 8.0+ and measures whatever your device exposes.
Measure your real screen refresh rate live. Verified Hz, VRR & smoothness test
Updated on
Jul 3, 2026
Data safety
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Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
- This app may share these data types with third partiesLocation, App activity, and Device or other IDs
- This app may collect these data typesLocation, App activity and 2 others
- Data is encrypted in transit
- Data can’t be deleted
What’s new
• Fixed a startup crash — TrueHz now opens reliably on every device.
• Live, verified refresh rate — every Hz measured on your device, never guessed from the model name.
• Panel report: supported modes, active mode, VRR/LTPO/ARR.
• Side-by-side visual smoothness test.
Honest by design: if a value can't be read, TrueHz says so. Thanks for your patience!
• Live, verified refresh rate — every Hz measured on your device, never guessed from the model name.
• Panel report: supported modes, active mode, VRR/LTPO/ARR.
• Side-by-side visual smoothness test.
Honest by design: if a value can't be read, TrueHz says so. Thanks for your patience!
