“Gr8 experience. Understandable but Unfortunately to much advertising for pro version.”
Independent automated assessment · 6 signal sources · 1,966 reviews scanned · analyzed 2026-10-06.
4.5 ★2,816,342 ratings
100M+Downloads
4+Age rating
296 MBApp size
Free · In-app purchasesIn-app purchases
About this app
GuitarTuna is your go-to guitar app, with over 100 million downloads and counting! Tune your guitar in seconds with the free guitar tuner, explore guitar chords & tabs for 20,000+ songs, and learn how to play guitar songs you love with trainers, tutorials & personalized feedback.
Why you’ll love GuitarTuna • Tune any guitar, ukulele, violin or bass perfectly with easy-to-use tuning • Switch seamlessly between guitar tuner, ukulele tuner, bass tuner & more • Get guitar tabs & chords for your favorite songs • Learn guitar songs with trainers, tutorials & personalized feedback • Practice like a pro with essential tools for guitar • Play songs you love at any skill level – guitar beginners included! • Become a better guitar player with an all-in-one guitar app in your pocket…
Preview
Real screenshots from the store listing.
Independent evidence report
The evidence behind this assessment
This is where the page changes from an app-store listing into an evidence report: findings, important reviews, pricing and a dated history.
Which version this describes
When we ran this analysis, and what the store lists now.
App Store
This analysis describes version 7.102.0 of the app, analyzed 2026-10-06 . The app may have changed since.
The store currently lists version 7.102.0, updated 2026-09-23.
Google Play
This analysis describes version 7.102.0 of the app (the version number recorded inside the package we inspected), analyzed 2026-10-06 . The app may have changed since.
The store currently lists version 7.102.0, updated 2026-10-05.
What we measured
Each line is a measurement published as a measurement, never a verdict.
Each line is a measurement, published as a measurement. Where we have not looked, the line says so rather than reading as a zero.
Developer replies to reviews
Replies to at least 1 review in 20
Price in the store description
States no price and billing period
Cancelling, in the store description
Says how to cancel
Themes reported by reviewers
2 themes reported
Counted from the reviews we have read for this app. "No theme reported" means no theme reached our reporting threshold — it is not a finding that nothing is wrong with this app, and we do not say it is.
Five-star share of ratings
65–79% five-star
Arithmetic on the stores' own published rating counts. It says nothing about why the ratings fall where they do.
In the package we scanned
From the package we downloaded and read — version 7.102.0, scanned 2026-10-06.
Permissions Android classifies as dangerous
1–2 requested
Counted against the eighteen permissions listed in collect-package.ts. A dangerous permission is one Android asks the user to grant; requesting one is not itself a finding.
Analytics or tracking SDKs in the scanned package
1–2 found
Advertising SDKs in the scanned package
1–2 found
Counted as distinct SDKs in the package we scanned. One mediation bundle can contribute several, so this is not a count of advertisers.
Graded bands · predicate set 1.4 · how these are measured
What the analysis found
App-specific findings, grouped by what each one rests on. How they are graded lives on its own page.
The catch list 1
Charges we publish at a strength we stand behind: measured from an artefact, agreed by independent sources, or reported by enough users to clear that charge's own published bar.
Price may differ from what you see here
The app ships a remote paywall-experimentation SDK, so the offer shown is configured server-side and may differ per user — including from anything we or a reviewer saw.
What we saw: Paywall is server-configured and A/B tested via RevenueCat Paywalls — the offer shown can differ per user
Context 1
Measured and published because a reader would want to know — deliberately not a charge. The measurement alone does not show a harm.
Cheapest and priciest options are far apart
The disclosed in-app purchases span an unusually wide price range. Published as context: the cheapest and priciest items may be different kinds of product entirely, so the spread alone deducts nothing.
What we saw: In-app purchases run from USD 1.99 to USD 139.99 — a 70x spread across 10 items
Positive evidence 1
Things this app does right, published at the same strengths as the catch list.
Developer says data deletion can be requested
The developer's data-safety disclosure on the store states that users can request deletion of their data, or the app's own text offers a way to delete the account. This restates what the developer declares; it is not a test of whether deletion works. Apple publishes no equivalent disclosure, so on an Apple-only listing only the app's own text can support it.
What we saw: The developer's store data-safety disclosure states that data deletion can be requested; we have not seen a deletion control in the app's own text
One source only — shown, not confirmed 3
A single kind of evidence. We publish these because withholding them would be the bigger distortion, and we do not treat any of them as a finding we stand behind.
Reported by users: Aggressive ad load
Advertising volume or placement that interrupts normal use: ads between every action, unskippable or forced full-screen ads.
What we saw: Aggressive ad load: raised by 7 distinct reviewers (1.1% of 646 reviews scanned)
In the app's own text: Hard to cancel
Cancelling the subscription is blocked, hidden, multi-step, or simply does not take effect.
What we saw: Cancellation copy routes the user away from a direct control: "Before you cancel, please consider accepting this offer"
Reported by users: Paywall blocks the basics
The core of the app — not extras — sits behind payment, or previously-free function moved behind a paywall.
What we saw: Paywall blocks the basics: raised by 6 distinct reviewers (0.9% of 646 reviews scanned)
Highlighted reviews
Representative public review excerpts shown as user reports, not Appworthy audit evidence.
“Broken ad, can’t move to next screen — The ad’s close button doesn’t work, couldn’t find a hidden button. Tried the annoying step of clicking the ad’s link to their App Store page, still stuck. Tried this several times, tabs are broken on…”
“They’ve added so many ads and interruptions — The app is great IF you have the premium version. Every time you open the app, you have to swipe through and dismiss their ad for premium. Tune your instrument one time? same thing. Switch to…”
Assessment & version history
App changes and Appworthy events in one timeline.
Store listing updated to version 7.102.0.
What this app sells
Useful store-disclosed pricing, kept below the app listing.
Items shown10
Lowest$1.99
Highest$139.99
GuitarTuna Play Monthly$9.99
GuitarTuna Play Monthly$8.99
GuitarTuna Tools Monthly$6.49
GuitarTuna Learn Monthly$24.99
GuitarTuna Play Yearly$39.99
Show 5 more purchases
GuitarTuna Learn Yearly$139.99
GuitarTuna Tools Yearly$29.99
GuitarTuna Pro Subscription$6.49
GuitarTuna Pro Subscription$1.99
GuitarTuna Pro$12.99
Google Play does not publish per-purchase prices.