Side by side

Airyware Tuner vs Centerline

Both stand on musical tuner apps. Which one you can start free with, which one lets you read the code, and what each costs once you pay.

Airyware Tuner

Free plan AndroidiPhoneWindows

Airyware Tuner offers extensive instrument coverage, precise readings, and configurable tuning references across three platforms. The post-trial reminder is the main condition on continued free use.

Visit Airyware Tuner

Centerline offers core chromatic and guitar tuning for free, with offline use and on-device audio analysis. Its stated range has limits for piano and low bass notes, and chord measurement is not provided by All Strings.

Visit Centerline

The facts

	Airyware Tuner	Centerline
Free plan	Yes	Yes
Open source	Not published	Not published
Runs on	Android, iPhone, Windows	Android, iPhone, Mac
Lowest paid plan	Full Version License: $4.99, paid once	Centerline Complete: $3.99, paid once
Plans published	1	2
Maker	Not published	Not published
Website	tuner.airyware.com	centerlinetuner.com
On musical tuner apps	#1 of 32	#4 of 32

Airyware Tuner: what it does well

Presets cover over 400 instruments
Includes more than 900 alternative tunings
Accuracy reaches 0.1 cent
Provides multiple tuning displays
Works on Android, iOS, and Windows

What to know first

Free use shows a reminder every thirty seconds
Full license costs $4.99, paid once
Designed for tuning rather than general audio work

Centerline: what it does well

Chromatic mode covers 62–800 Hz.
Four chromatic display views, including six-second pitch history.
Guitar mode includes automatic string detection.
Tuning works offline and audio stays on-device.
No ads or account system.

What to know first

All Strings does not measure a chord at once.
Chromatic mode omits the full piano range.
Chromatic mode omits a bass guitar’s lowest notes.
No trial; the optional unlock is a one-time purchase.

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