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.
Gassupop turns your daily tasks into a quiet little ritual.
$1.99
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 Gassupop: Cozy Habit Tracker: map the core Productivity 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 often find habit trackers too complicated.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Lack of customization in habit tracking.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Many apps don't provide motivation features.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Users miss seeing their progress over time.
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.
Gassupop turns your daily tasks into a quiet little ritual. Finish what you set out to do, earn a token, twist the knob on your own pocket gacha machine, and pull a reward you actually picked for yourself. No accounts. No ads. Works offline. Just you, your tasks, and the satisfying clunk of a capsule landing in the tray. HOW IT WORKS - Add tasks split into Daily (reset at midnight) and Quests (stay until completed) - Weight each task based on effort - Build your own reward pool (coffee, an episode, an hour off, anything you enjoy) - Earn tokens as you complete tasks - Twist the knob and receive a randomly selected reward from your pool THREE-TIER MACHINE A vertical Japanese-style gacha with three hoppers: - Tier 1 → Rare, Epic and Legendary only rewards - Tier 2 → Common & Rare only rewards - Tier 3 → A mix of all rewards RARITY SYSTEM Every reward rolls a rarity when you pull it: - Common (60%) — your everyday treats - Rare (25%) — something a little nicer - Epic (12%) — exciting picks - Legendary (3%) — special moments Reveal animations scale with rarity, some quick, some worth savoring. TWO HANDCRAFTED THEMES - Gacha Classic — bold toy palette with arcade-inspired tokens - Kinfolk Kissaten — warm café tones with a calm, earthy feel Each theme includes its own visuals, sound design, and personality. Additional optional theme packs may be available in future updates. SOUND DESIGN Carefully crafted audio inspired by real gacha machines, coin drops, knob clicks, and capsule thunks tuned for satisfying feedback. OFFLINE-FIRST & PRIVATE Your data stays on your device. No account required. No ads. No tracking for advertising. IMPORTANT NOTE All rewards are self-defined and have no real-world monetary value. WHO IT'S FOR People who want a softer, more personal way to stay motivated. People who enjoy aesthetic, calming apps. People who like small, satisfying reward moments over rigid habit systems. Designed for general audiences. A NOTE FROM THE DEV Hi, I’m a solo developer behind EternalHobbyHopper. I built this for myself, the way I wish motivation apps felt. Thanks for being here.
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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.