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.
Experience immersive cardio & strength workouts you can do anywhere
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 iFIT Workouts: 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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Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Experience immersive cardio & strength workouts you can do anywhere. Whether you’re on a treadmill, bike, elliptical, rower, or just an exercise mat—iFIT has amazing workouts to help you unlock your personal best. iFIT’s global fitness platform features over 10,000 on-demand workouts, filmed in stunning outdoor locations across all 7 continents. Explore high-intensity cardio, full-body strength, cycling, yoga, Pilates, HIIT, barre, marathon training plans, stretching, walking, and mindfulness, all led by expert trainers. Millions of people around the world use iFIT to reach their health goals. Whether you’re looking to build strength, improve endurance, boost mobility, or simply move more, iFIT gives you the tools and motivation to chase every fitness goal. iFIT workouts can be streamed on compatible devices and paired to your machine via Bluetooth®. If you own iFIT-enabled equipment from NordicTrack, ProForm, or Freemotion, your workouts are even more immersive. SmartAdjust™ tech automatically adapts your machine's speed, incline, or resistance to suit your fitness level. iFIT will base future workouts on your recent performance, making incremental changes to keep you progressing. No equipment? No problem. Many workouts require nothing more than your own bodyweight. Get daily workouts that are personalized based on your fitness level, goals, and progress, so you always know what to do next. KEY FEATURES 10,000 Workouts (and counting!): Tap into the one of the world’s largest outdoor workout libraries, with progressive series led by expert trainers who guide you to results. Top Trainers: Unlock your best performance with iFIT’s 180 elite trainers, pro athletes, and world champions who lead you through every workout. Explore workouts led by the cast of Trainer Games! Stunning Locations: Exercise all around the world, from Everest basecamp to the salt flats of Bolivia, from the redwoods of California to the peaks of the Pyrenees. Options for Every Modality: Whether you use free weights, a NordicTrack or ProForm treadmill, bike, elliptical, rower or no equipment at all, iFIT has workouts for every type of training. Personalized Fitness: Get AI-powered workout recommendations tailored to your fitness goals and schedule, along with accountability and motivation. Progressive Plans & Programs: Take the guesswork out of your goals with multi-week trainer-led programs, such as running a 5K, working toward a full marathon, or improving overall strength. Real-Time Responsive: Feel your machine’s incline, resistance, and speed match your on-screen trainer and the terrain of your workout, dropping you deeper into the experience. Progress Tracking: Visualize your personal workout stats, track your data, and unlock insights in the app or on your iFIT-enabled machine. Train Anywhere: No equipment needed for iFIT’s bodyweight, yoga, meditation, and cross-training workouts. Up to 5 Users with iFIT Pro: Share your plan with your family, each with their own personalized experience and workout tracking. Subscription Options¹ Choose the iFIT plan that fits your fitness needs: iFIT Train: $14.99/month or $143.99/year with access for 1 user iFIT Pro: $39.99/month or $394.99/year with access for up to 5 users Subscriptions automatically renew unless canceled before the end of the billing period. Manage your subscription in your account settings. Paid iFIT Pro membership required with equipment purchase and to access content and features. Membership auto-renews unless cancelled in advance. Free iFIT account, agreement to terms, and wi-fi required to operate equipment. AI Coach provided via in-app messaging (see here for regional availability). Existing users who enrolled prior to September 2025 and users who opt-in after that date may continue using AI Coach via a text-based service (US only); msg & data rates may apply. Terms of Use: https://www.ifit.com/legal/terms Privacy Policy: https://www.ifit.com/privacy-policy
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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 variety of workouts compared to competitors.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Subscription model may confuse users with multiple tiers.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of social features for user engagement.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Occasional syncing issues with devices.
Validate with people who use this workflow before building.
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.