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.
Nextplus lets you stay in touch with people around the world without giving out your real number
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.
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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.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Nextplus lets you stay in touch with people around the world without giving out your real number. With Nextplus you'll get: - A free US Phone number so friends can call & text you (you pick the area code) - Free texting (SMS, MMS + group chat) to any US or Canadian mobile number - Free inbound phone calls - Toll-free calling from anywhere in the world with no restrictions! - Inexpensive outbound phone calls - Works great over WiFi so you don’t even need a 3G/4G connection. - No contracts, no “surprise” costs. - Turn your iPod touch into a phone! HOW IT WORKS Unlike other app-to-app messengers, we let you call and text ANY phone number! Nextplus works across all your devices so you'll never miss a message. All you need is WiFi - no 3G/4G connection required! Your friend’s phone company charges us small fees to deliver texts and calls on their networks. Rather than force you to pay, we let you view a few banner ads or watch a quick video. If you choose, you can pay a buck or two and make those ads disappear. The choice is yours! IN APP SUBSCRIPTION DETAILS - Keep Your Number for 1 year $1.99 / Remove Banner Ads for 1 month $0.99 / Remove Banner Ads for 1 year $5.99 / Unlimited Ad-Free calls to Mexico (landlines) for 1 month $6.99 / Unlimited Ad-Free Calls to Mexico (mobile) for 1 month $29.99/ Unlimited Ad-Free calls to US & Canada for 1 year $19.99 - If you choose to subscribe to a plan, you will be charged a price according to the plan selected in your country. The price will be shown in the app before you complete the payment. - Payment will be charged to your iTunes account at confirmation of purchase - Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of your current period - Account will be charged for renewal within 24-hours prior to the end of the current period, at the purchase price listed above - You may manage your subscriptions and turn off auto-renewal by going to your iTunes Account Settings and then "Manage Subscriptions" - No cancellation of the current subscription is allowed during active subscription * IMPORTANT: - We do not support 911 in the US - In order to place most outbound phone calls you will need to purchase credits within the App - If push notifications are not enabled, you may not receive messages and calls Terms of Use: https://textplus.com/textplus-terms-of-use/ Privacy Policy: https://textplus.com/textplus-privacy-policy/ Subscription Products: • Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication
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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.