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.
Chithi.me is a mailbox for letters worth keeping.
Free
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 Chithi.me: map the core Social Networking 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 content discovery options
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Low user engagement in comments
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: No direct messaging feature
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Basic profile customization
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.
Chithi.me is a mailbox for letters worth keeping. Share your link on social media, and the people who follow you can write you a letter. It arrives in its own handwritten font, on their choice of paper-like design, and it stays in your mailbox for as long as you want it there. HOW IT WORKS 1. Share your Chithi.me link 2. The people you share it with write you a letter 3. It lands in your mailbox seconds later WATCH THE WRITING TAKE SHAPE Replay any letter keystroke by keystroke and watch it being written. It is the closest you will get to sitting beside someone while they write to you. POST ONE TO YOUR STORY Put a letter on one of your own photos and share it in a tap. YOUR OWN QR CARD Turn your link into a card people can scan. Pick a style, write a caption in Bangla or English, and share it as a picture. Point a phone camera at it and your letter page opens. A MAILBOX THAT IS ONLY YOURS Letters arrive grouped by day, so today's are on top. Search everything you have ever been sent. A notification tells you the moment one lands. Nobody but you can see your mailbox. YOU DECIDE WHAT REACHES YOU Letters arrive unsigned, so a friend can say the kind thing they would not say out loud. That only works if the mailbox is a safe place to open, so Chithi.me is built with the controls to keep it one: - Every letter is screened by an automatic filter, in English and in Bangla, before it reaches you. The filter is on by default and you can turn it off. - Report any letter in two taps. We review every report within 24 hours and remove anything that breaks our rules. - Block whoever wrote a letter and nothing of theirs reaches you again. Blocked writers are listed in Settings, and you can undo it there. - Delete any letter the moment you see it. - Pause your link so it stops accepting letters, or delete your account and everything in it, from inside the app. - We have no tolerance for abuse. Writers who break our rules lose access, and we act on reports within 24 hours. - Reach us any time at [email protected]. Chithi.me is for people who miss getting letters. Share your link and see what arrives. Terms of Service: https://chithi.me/terms-of-service Privacy Policy: https://chithi.me/privacy-policy
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.