Appworthy

Drumline

Drums, Notation & Drill Charts

John Ostler
Download on theApp Store
App Store rating4.1★1.2K ratings
Price$4.99Listed price
Age4+Store age rating
Size192 MBiPhone download
CategoryLifestyle
DeveloperJohn Ostler

What we found

Full report

Too little checked to say Store information only. We haven’t analysed this app or read its reviews yet.

Money

  • $4.99 to download.

Not yet tested.

The store currently lists version 5.0.0, updated 2026-10-20.

Preview

Screenshot 1Screenshot 2Screenshot 3Screenshot 4Screenshot 5Screenshot 6Screenshot 7Screenshot 8

Store screenshots supplied by the developer.

About this app

Your drumline toolkit, in your pocket for less than a pair of sticks. With version 5, you can now write the break, chart the drill, and practice with a Drum Major. Are you kidding?!

If you can't stop drumming on anything and everything around you to the point where your family, friends, and neighbors consider you "disruptive"... you're in the right place.

Snare, tenors, basses, cymbals, xylophone, marimba, and vibes. Plus notation, a drill book, a drum major, metronomes, a drumhead tuner, and challenges that might put your section leader's title at risk.

Version 5 is insane. Buy it once. No subscription. No in-app purchases.

WRITE YOUR NEXT DRUM BREAK

That rhythm you've been tapping on your desk? Write it down. Build parts for snare, tenors, basses, and cymbals. Add accents, diddles, flams, dynamics, and tuplets. Hit play and hear your battery bring it back.…

From the developer’s store description.

For developers and the curious

The full report

The evidence, sources, measurements and versions behind every label above.

Findings and evidence

Not yet tested
Not yet tested. No analysis has been published for this app. A missing label is not a clean bill of health.

What reviewers report

No review coverage

No review analysis published for this app.

Measurements

3 measured · 5 not assessed

“Not assessed” means we could not measure it. It is never a zero and never a pass.

From store data and reviews

Developer replies to reviews
Not assessed
Fewer than 50 reviews scanned — too few to state a rate
Price in the store description
The store description doesn’t list prices (most don’t)
Cancelling, in the store description
The store description doesn’t say how to cancel (most don’t)
Themes reported by reviewers
Not assessed
This app's reviews have not been assessed yet
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 app package we scanned

No package has been scanned for this app, so nothing is published about what it ships. That is an absence of evidence, not a finding.

Sensitive permissions
Not assessed
No package has been scanned for this app
Analytics or tracking SDKs in the scanned package
Not assessed
No package has been scanned for this app
Advertising SDKs in the scanned package
Not assessed
No package has been scanned for this app
How we know

Supporting measurements: not a complete list of possible harms or positives. Measurement vocabulary 1.4 · how these are measured

Versions and dates analysed

Not yet tested

Not yet tested. No analysis has been run for this app, so there is no version or date to report.

Store update history

Each store’s release notes, as the developer wrote them. They are the developer’s words, not ours.

App Store

Version 5.0.0 · 2026-10-20
Remember that insane level of updates we said was coming? Blow on your hands and stretch out those wrists. Already own Drumline? You won’t pay an extra cent. No subscription. No in-app purchases. If there’s one thing I’ve learned in nearly 40 years of drumming, it’s that drummers always have each other’s backs. So treat yourself to a new pair of sticks instead. Happy hacking. WRITE NOTATION Write your next drum break right in the app. Build battery parts with accents, diddles, flams, dynamics, and tuplets, then hit play. Save and share editable scores, or export PDF and PNG sheet music. That thing you've been tapping on every available surface? Give it a name. CHARTS A whole drill book.…

Shortened here; the full notes are on the store listing.

Assessment record

Status
Not yet tested
App identifier
drumline
Sources used
None recorded
Reviews read
None recorded
Package examined
No package scan
Human inspection
Not completed
How we know
Measurement vocabulary
1.4

Store facts

App Store

What the stores publish. Store ratings are the stores’ numbers, not Appworthy’s, and are never averaged across stores.

App Store

Store rating
4.10 ★ · 1,163 ratings
Version
5.0.0
Updated
20 Oct 2026
Price
$4.99
Age rating
4+
Size
192 MB
Open in App Store
Developer
John Ostler
Category
Lifestyle
Listing price
$4.99

No itemized purchase list is available for this listing.

Method and limits

What this report can and cannot show

What a missing label means

Not yet tested. No analysis has been published for this app, so there is no method to describe for it yet. A missing label is not a clean bill of health: it means nothing has been read, not that nothing is wrong.

Limits of this report

  • A package scan is static. It identifies code and text in one Android build. It does not measure a live ad session, test a deletion request, or count the steps needed to cancel.
  • Reviews keep their sample. A review-only charge shows distinct reviewers, the share and the sample size, and is published only once it clears that label’s published threshold. Calibration labels are machine-drafted and not yet confirmed by a person.
  • Not assessed is a state. It is never a zero and never a pass.
  • A missing label is not a clean bill of health. It means the evidence did not support one, not that the app is problem-free.
Not yet human-reviewed. A human review gives an app hands-on, recorded measurements. None has been run for this app. Hands-on inspections are not yet open.
Review thresholds Read the methodology For developers

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