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.
Kabi is a focused gym log for lifters who want to track training without clutter
$2.99 · 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 Kabi - Gym Bro: map the core Health & Fitness 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 user engagement features such as social sharing
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Lack of personalized workout plans
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Basic nutrition tracking without food database
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: No integration with wearables
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.
Kabi is a focused gym log for lifters who want to track training without clutter. Build routines, start workouts fast, log every set, and track your food in one place. Kabi keeps you locked in with a clean, no-nonsense experience. ROUTINES & WORKOUT FLOW Plan your training with reusable routines and a wide range of exercise templates. Start workouts instantly and stay in the zone with a clean, distraction-free interface. SET TRACKING & ACTIVE SESSION Log every set with ease. Kabi keeps the session moving with per-exercise rest timers, haptics, and a clear active workout screen so you stay focused between sets. PROGRESS, STATS & PERFORMANCE Review your training history, total volume, duration, and performance details after every session. Dive deeper with body part statistics, detailed charts, and clear analytics so you can see how you are improving over time. BODY TRACKING Track body measurements, weigh-ins, and progress photos. Keep your training data and physique notes in one place. FOOD LOGGING Track your meals alongside your workouts. Log food quickly with scan support and keep your nutrition aligned with your training. EXERCISE LIBRARY Access a large library of exercises with visuals to guide your form and execution. KABI YOUR GYM BRO Kabi pushes you with motivational prompts, keeps you accountable, and adds energy to every workout like a real gym bro beside you. EXTRA FEATURES Workout reminders to stay consistent Backup import and export for your data Shareable workout summaries Direct access to the Kabi community BUILT FOR CONSISTENCY Whether you are building consistency, chasing progressive overload, or just trying to remember what you lifted last time, Kabi keeps the proof close. OFFLINE FIRST. YOUR DATA IS YOURS. Kabi is fully offline-first. Your data stays on your device. Nothing is uploaded, shared, or sold. No external tracking services, no hidden analytics, no accounts required. You own your data, full stop.
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.