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.
Heja is the simple and modern way to manage your sports team
Free · 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 Heja: 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: Users find it hard to manage notifications.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Event management can be confusing.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Limited communication features.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: User onboarding is not engaging.
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.
Heja is the simple and modern way to manage your sports team. It keeps everyone informed with a clear team schedule, availability RSVPs, automatic reminders, and group text messaging, including video and photo sharing. Heja helps teams connect and grow together in a shared love for team sports. Trusted by more than 1.8 million coaches, players, parents, and volunteers worldwide! SCHEDULE YOUR SEASON Schedule games and practices with automatic reminders to parents and players. Heja helps you stay organized throughout the season. TRACK PLAYER AVAILABILITY Stay on top of who’s coming to games and practices - even if plans change. Whether someone’s sick, running late, or away, Heja keeps coaches informed and reminds players and parents to reply. CHILD SAFEGUARDING Safety is our top priority. Heja includes child safeguarding features to prevent adult–minor contact without a parent’s knowledge. MESSAGING Send messages to individual team members, groups, or the entire team — it's up to you to decide. SEE WHO'S READ YOUR MESSAGE! ANNOUNCEMENTS Cut through the noise and make sure your message reaches everyone on your team instantly. MANAGE MULTIPLE TEAMS Coach or play on several teams? Heja makes it simple for coaches, parents, or players to be part of more than one team — keeping all team info in one easy-to-find place! SHARE VIDEOS AND IMAGES The safe and secure way to share photos of the team from practice or post strategies ahead of the game. Heja allows you to upload photos and videos directly from your pocket! FUNDRAISING MADE SIMPLE Create a fundraiser in minutes - no fees, no inventory, no hassle. Each player gets their own personal webshop with a goal, and supporters can shop directly from their link. As everyone tracks their progress, the team’s goal grows together. It’s simple, fast, and all in Heja. ALL CONTACTS IN ONE PLACE Store all the contact details for everyone on the team in one place with easy accessibility. Parents can arrange rides to practice and divide team responsibilities. Everything doesn't have to go through the coach! FREE TO USE That’s right. Heja is free for everyone on the team to use, with no limit to how many players and parents or guardians there are on the team. ADVANCED FEATURES WITH HEJA PRO Want more from Heja? Unlock Heja Pro to access attendance stats, payment tracking, unlimited admin roles, desktop access, RSVP updates, powerful reminders, and an ad-free experience for coaches and admins. It’s available through in-app purchases. ABOUT HEJA We want to make it possible for every child in the world to experience the joys of team sports, from building friendships to bridging cultures and boosting health. That's what we believe in. Through Heja, we make it simple and accessible for everyone — including coaches, families, and players — to be part of a well-run sports team. PRIVACY More than 235,000 teams trust Heja for their internal communications. We don't take that trust lightly and care a lot about your privacy. Read our privacy policy here: https://heja.io/privacy Read about Heja's terms of service here: https://heja.io/terms
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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.