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.
Drumtune PRO turns your phone into a professional drum tuner trusted by tens of thousands of drummers worldwide
$11.99 · In-app purchases
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.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
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Generating… usually about a minute.
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
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.
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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for Drumtune PRO | Drum Tuner: map the core Music workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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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
Assumption to check: Lack of accuracy in tuning detection
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Limited drum types available
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: High price point compared to competitors
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: User interface can be confusing
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Drumtune PRO turns your phone into a professional drum tuner trusted by tens of thousands of drummers worldwide. It helps you tune drums accurately, develop tuning skills, train your ears, and achieve the best possible sound for your kit. 〉〉Why do drummers choose Drumtune PRO? • Gets your drums sounding their absolute best. Every time. • Trains your ear through visual feedback and builds real tuning skills. • Gives deep insights into drum tuning for true control and confidence. • Packed with pro-level tools that help you stand out. 〉〉KEY FEATURES DRUM TUNER → Tune snare, toms, floor toms, kicks, congas, and bongos with precision. → Focus lock-mode lets you clear lug pitches and kills overtones. → Shape your sound by balancing batter and resonant heads. → Lock in, optimize, and repeat your perfect tuning fast. → Save tuning presets to store your favorite sounds. → Save your personal tuning approach and custom pitches for batter, reso and fundamental per drum. Recall them in minutes, anywhere. → Download free Evans, Remo, and Aquarian drumhead packs to organize your presets. LUG TUNER → Instantly spot which lugs need adjustment > no more guesswork. DRUM KIT INTERVAL → Build drumkits. Adjust the tonal spacing between the individual drums. Create a coherent kit sound. → Tweak the intervals between drums . Change the tuning of batter & reso with each drum stable in its tonal spot within the kit. Balance your kit for coherence in dynamics & feel. PERCUSSION TUNER → Tune congas & bongos to any pitches or intervals within the set, accurately. CLICK TRACK / METRONOME → Create custom beats, activate BPM count-in, control in-ear monitors, and tweak meters & subdivisions. → Use advanced training modes to tighten your groove & pocket. → Build, organize, and share tempo & rhythm track lists. MULTI-TRACK RECORDER → Record grooves, fills, ideas, or full rehearsals (with BPM count-in and click for in-ear monitoring). → Manage, rename, import/export, and share recordings. → Select input, adjust mic gain, apply EQ and effects, change playback speed, and record up to 4 tracks. → Import any backing track (like a bassline sketch), press record, and lay your drum track alongside it. SAVE & RECALL EVERYTHING → Store exact tunings (including lug pitches and fundamental tone). → Create sound references for each preset. → Enjoy free cloud backup, or backup on your personal CloudDrive or device. 〉〉REAL TALK Drumtune PRO isn’t about shortcuts. It’s about helping you achieve real growth, gain skill, control, and obtain a unique sound that earns respect. Drumtune PRO is a tool to help you build lasting drum tuning skills with clear feedback, empowering you to make your own creative sound decisions. • Mastering your kit still takes listening, awareness, and practice. • The tuner shows you where you are pitch-wise, but you make the tuning decisions for your tone & feel. 〉〉TECH SPECS • Patented high-precision tuning engine (0.5 Hz resolution) • Ultra-wide tuning range: 30 Hz to 800 Hz and way up (adaptive by drum type and mode) • Compatible with iOS 15.6 or later and iPhone 8 or newer 〉〉 SUPPORT Question/doutb/bug: [email protected] ⌘ Pro Tip ⌘ Drumtune PRO already has the widest tuning range of any drum tuner app or drum tuner device made so far. • High pitches beyond the tuning range can show as lower pitches within the tuning range. • Respect the natural tension range of your drumhead. Like tuning by ear, apply tension with care. • Use common sense & trust your drummer instinct to never overtighten. Too much tension can snap drumheads, especially thin snare reso heads. • Start at medium snare-reso tension first and increase gradually so the high pitch tracks accurately within range. • When in doubt, or when overshooting the range chasing a pitch, return to medium tension. ► Tune smart, play hard, and trust Drumtune PRO to keep you sounding your best, every session!
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Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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.