App Overview

Drumline Break Creator icon

Drumline Break Creator

John Ostler · Music

Composing percussion notation for snare drum and tenors is finally fast, easy, and fun! No laptops, no expensive subscriptions, no extra plugins, and no 1990's music composition apps made for piano with 500 options th...

$4.99 · In-app purchases

PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.0
40 ratings · Top 30%

Evidence scope: No current overall US chart position is available. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.

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What's included16 files

A product spec, phased build plan, differentiation notes, and screen references.

  • START_HERE
  • AGENTS
  • EVIDENCE
  • SPEC
  • BUILD_PLAN
  • DIFFERENTIATION
  • skills/
  • screens/
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Feature spec

Goal: Send a clear invoice after finishing a job.

  • Add a client, line items, a due date, and payment instructions.
  • Preview the total before exporting a PDF.
  • Keep an editable draft if export fails.

Screen plan

Invoice editor: Client at the top, editable line items in the middle, total and preview action at the bottom.

States: Empty draft, validation errors beside each field, exporting, and a retry action that preserves the draft.

Differentiate and validate

Hypothesis: Contractors need faster repeat invoices more than more templates.

First experiment: Test duplicating a previous job with five contractors. Watch where they hesitate before expanding the feature set.

The full kit adds a phased build plan, evidence notes, tool prompts, and implementation guidance. It is a plan for your coding agent, not a finished app.

Usage: Mechanics are fair game; never reuse the original name, branding, assets, or verbatim copy.

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Opportunities

AI-GENERATED OPPORTUNITY HYPOTHESES

These are generated suggestions, not verified review quotations. Check current App Store reviews and speak with users before treating a possible gap as a requirement.

Hypothesis 1

Expand sound library and allow user uploads.

Assumption to check: Limited sound options compared to other music apps

Validate with people who use this workflow before building.

Hypothesis 2

Optimize playback functionality for smoother experience.

Assumption to check: Issues with audio playback latency

Validate with people who use this workflow before building.

Hypothesis 3

Enable users to share their created breaks on social media.

Assumption to check: Lack of social sharing features

Validate with people who use this workflow before building.

Hypothesis 4

Provide clearer information on premium features and benefits.

Assumption to check: In-app purchase confusion

Validate with people who use this workflow before building.

App evidence

Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.

App Store description

Composing percussion notation for snare drum and tenors is finally fast, easy, and fun! No laptops, no expensive subscriptions, no extra plugins, and no 1990's music composition apps made for piano with 500 options that you'll never use. Whether you're in your bedroom or the band room, a bus, or the field, you now have full access to the specific notation you need to compose, edit, playback, save and share snare drum and tenor drum notation with your section, instructor, drumline, and band. All this for one price, forever in your pocket right next to your drum key. We spend our entire percussive careers playing other people's music. Isn't it time we start playing our own? This app is on a mission to inspire a new generation of music writers. It's time for YOU to write the next winning break, percussion feature, cadence, street beat, or drill. *Insert stick drop here* All audio samples were professionally recorded at NoiseFloor Ltd. in Chicago by DCI sound engineer Jamie Vanadia. The snare drum and tenors used were generously provided by Dynasty. The snare is Dynasty's MS-XD14 Marching Snare Drum on an Evans Hybrid drumhead. The tenor drums are Dynasty's MT-680234 Tenor Drums in Corps Configuration with 6 inch and 8 inch shot drums on Evans Corps Clear heads. Drum Break Creator includes a number of rudiments such as triplets, sextuplets, flams, single stroke 4s, etc. Plus place, accents, doubles, grace notes, buzz notes, rimshots, double stops, as well put in your preferred sticking. Use the app to create your next standout drum break. Create your drumline's next set of warmups. Write a few new cadences or street beats for that next parade. Use it to better understand the timing and voicing of your music. Play along on your drum pad. For beginners, use it to better understand how to read certain notations. Recreate some of the harder parts of your sheet music to help smooth out the tougher bits of your show. Every person who downloads this app will have ideas on ways to make it better or more awesome. Feedback is super welcome!! I will continue to add and support the apps into the years to come. Oh, and just to take out one of the more obvious requests, bass drums and cymbals are coming as the user base grows. Hi, I'm the developer of this app and I've been drumming for 32 years. (Woah, I never actually did the math on that) From playing along to records of drum battles of Gene Krupa and Buddy Rich when I was 7, to high school marching band, placing at WGI finals, sleeping on the floor at Glassmen (RIP) auditions, Michigan State's drumline, lessons, instruction, all the way to touring the U.S. several times with my indie-emo band backed by Truth Drums (sans black eyeliner). I've been surrounding myself with musicians who appreciate the sport and the art of marching percussion. I'm very fortunate enough to also know a thing or two about creating software – which somehow still leads me back to drumming. :-D Happy hacking, and thanks for downloading.

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Screenshots

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Build scope

Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.

Define the first version

Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.

Set boundaries

Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.

Check the hard parts

Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.

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BUILD KIT DIFFICULTY
Intermediate

From the Build Kit assessment.

A reliable timeline needs an agreed scope and a technical check. Ask your agent to estimate the phases in BUILD_PLAN.md after that review.