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.
"This app is awesome...my coach has a high tech hand held police grade radar gun...we put this app to the test and it didn't fail" - CurtisR33
$13.99 · 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 Athla Velocity (Ultimate): map the core Sports 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 performance metrics 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: Subscription model is not flexible.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of community 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.
"This app is awesome...my coach has a high tech hand held police grade radar gun...we put this app to the test and it didn't fail" - CurtisR33 "Super simple to setup (be sure to check out the very helpful videos) and very accurate" -Peace "It took awhile to set up the location of the phone but after that, it worked so well...more affordable than a real radar gun and the same accuracy" -Fierygloberr674 ---- Please note before you purchase! • Outdoor use only • Speed radar capability requires iPhone 5S or higher, iPad 3rd Gen or higher, iPad Mini 2nd Gen or higher needed. • Selfie mode requires iPhone 6S or higher ---- Athla Velocity is the only video radar that outperforms PocketRadar and matches a $1,200 Stalker II Pro Doppler. See our "battlefield" of five speed radars at athla.com/radar No longer do you have to tap the screen or ask a second person to hold your device. Velocity is the first video speed radar to work hands-free and calibrate within 0.3mph of a $1,200 Doppler. • Velocity Free Edition gives you free shots to begin. You can ask friends for additional free shots. • You can buy shots packs or entire radars. • Velocity Ultimate Edition unlocks all the radars for a single price. Transform your iPhone or iPad into a revolutionary video camera speed radar! AS SEEN IN • Apple's Commercial "Change is in the Air" Game Changing Apps • "Best App Across Multiple Sports" Finalist Sports Technology Awards • Finalist TechCrunch Disrupt Startup Battlefield Top 26 from over 700 companies • Gold Award for Sports & Recreation -- Davey Awards • Inc. Magazine, Mashable.com, and CNN • Tabby Awards - Finalist for Best Sports App Audiences can download the Free version to connect and see your speeds from the stands. COMPLETELY HANDS FREE • No longer tap or hold your device to get your speeds • Simply place your iPhone or iPad about 5 feet away and 20 feet to the side then kick, pitch or serve in-line and in-view of your device. • The speed of your baseball pitch, soccer kick, cricket bowl, or tennis serve appears on the surface of your device. • Velocity uses only the camera in your device. • Use Velocity on a field, rink or court, or simply in a backyard at home. HIGHEST ACCURACY AVAILABLE • Velocity calibrates to within +/- 0.3 mph of the Stalker II Pro ® , a $1,200 speed radar used by over 30 professional teams. • The accuracy exceeds Doppler radars on balls with vertical trajectories. • See athla.com/blog for calibration details and more DISCOVER YOUR INNER ATHLETE • Five sports available now: Baseball, Softball, Tennis, Cricket and Soccer • Discover the speed of your pitches, serves, and kicks • Over 500,000 data points are trackable. Track your improving speeds across coaching sessions, the sports season, or across several years. • Share speeds with coaches to show what you have achieved. BRING THE STADIUM HOME • Mirror your speeds on up to seven other devices • Bring the stadium experience home to your own community. • Audiences can see the speeds as players practice or play similar to professional games. • Add Bluetooth speakers, turn on “Voice Announce”, and Velocity will speak the speeds to the team or an audience. MORE • Optimized for outdoor use only. • 130 mph max speed on iPhone 6S or above • 110 mph max speeds: on iPad Air, iPad 4th Gen, iPad 3rd Gen, iPad Mini 2nd Gen, and iPhone 5s+ • 100 mph max speed for iPhone 5 and 5c. Velocity by Athla - Rediscover the Power of Play
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.