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.
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$3.99 · 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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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 Equalizer: 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: Limited preset options compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: User interface is not very engaging
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Some users report bugs with playback controls
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of social sharing features
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.
"... the sound quality blew us away."- Gearburn.com Music player with the most powerful and acurate equalizer in the app store as well as the most advanced playlist controls. + Play music directly from your Music Library including podcasts and music video (audio only) + Adjust the powerful parametric equalizer by moving the seven control points or type in the values directly. + Adjust the EQ curve for your left and right ear separately (now extends from -30 to + 30 dB. Use the StereoEQ setting for that) + Select from over 10 presets or save your own. You can even share them via email and import presets from other people via email. + Full background support including remote control (from docks, headsets, car stereos) + Visualize the music with the spectrum analyzer. + Use AirPlay to listen on your AppleTV, or your Bluetooth headsets and even a dock. + Use the pre-amp slider to adjust the overall boost or cut. Make sure to turn the slider down if you experience distortion. Use the auto-normalizer function to prevent clipping automatically and have the best dynamic range possible with your eq curve. (on/off in settings) + Curve screen: curve redraws as controllers are dragged. Pinch to modify Q. Three stage clipping signal on preamp slider. Keyboard entry for pre-amp. Twitter/Facebook/Weibo integration to share your current EQ curve. Bypass. + Crossfade between songs. Make sure to stop the music before changing the crossfade time slider. + Now playing screen includes repeat (all, single no repeat) button and shuffles like the music app. Improved stability of on the fly modifications of the playlist. Add more songs to the playlist at any time. Sort playlist alphabetically. + Music selection is very similar to default music app. + Turn landscape to display the frequency analyzer. + Built in sleep timer to stop Equalizer after a certain period if time. + Crossfeed option to blend audio between channels + Apple Watch support for eq curve selection incl. complications KNOWN ISSUES: No known issues. please contact support if you have any problems. COPY-PROTECTED MUSIC: Equalizer will not play copy-protected (DRM). You need to convert DRM songs. Apple Music Streaming uses copy-protected songs. iCLOUD: Only the Apple Music app can manage songs in iCloud (iTunes Match). You will need to make sure the songs are downloaded to your device to listen and enhance them via Equalizer. If you want to stream and eq your music, you can try our other app: CloudEQ. It allows you to stream and eq music from SoundCloud and your Dropbox account without the need for storage on your device. From the reviews: EXCELLENT PROGRAM I connect my iphone 4 to a car audio system, with the application the music began to sound incomparably better .... A little clear interface, but to understand it and understand need no more than 5-10 minutes. -- P_S_B_ *** LOVE IT This is the EQ I have been looking for, and because of bad ratings I almost passed on it! I consider myself an aspiring audiophile and have the equipment -- Klipsch, Sunfire, Nottingham, Denon, Paradigim, etc. -- (and debt) to back it up. This EQ performs flawlessly and is very easy to use. It enhanced my music dramatically. Yes, dramatically! Just make sure you are running the recommended IOS, as the developer suggests. -- J. Paul DiMaggio *** PLEASE if you have concerns or encounter problems with the app: post on http://www.audioforge.ca and we will explain how things work, until you can use all the features of the app to the fullest. Thank you
Written user reviews are not shown here. Check current App Store reviews >
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.