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.
App Overview
Fontbridge: Custom Fonts
Bring your fonts to iPhone and iPad.
$2.99
PRICE
$2.99
No in-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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.
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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What's included
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
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Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Screen plan
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.
Differentiate and validate
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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Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
Bring your fonts to iPhone and iPad. Fontbridge makes it easy to import, install, check, and manage your own fonts on iOS and iPadOS. Import TTF, OTF, TTC, and ZIP files, install fonts on your device, and use them in compatible apps such as Pages, Keynote, Numbers, Word, PowerPoint, Excel, and more. Fontbridge can also check documents for missing fonts, so you can quickly see which fonts a file uses, which ones are already available on your device, and which supported missing fonts can be installed. Key Features ・Import multiple TTF, OTF, and TTC font files ・Import ZIP archives and skip fonts you already have ・Create and install font profiles on iPhone and iPad ・Manage your imported fonts in one place ・Check documents for missing fonts ・Install multiple available missing fonts at once ・Browse selected open-source fonts ・Works on iPhone and iPad ・No account required ・No subscription required Fontbridge is useful for documents, presentations, multilingual typography, course materials, contracts, resumes, and other files where the correct fonts matter. It works especially well when moving files between devices or when you need to make sure a document has the fonts it was designed to use. A simple font utility, not a font marketplace. Fontbridge does not replace the iPhone or iPad system interface font and cannot force apps to use custom fonts. Installed fonts are available to apps that support system-installed fonts or custom font selection. Font availability depends on iOS, iPadOS, and each app’s own font support. Some apps may need to be restarted before newly installed fonts appear.
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Opportunities
AI-GENERATED OPPORTUNITY HYPOTHESES
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.
Build scope
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Define the first version
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Set boundaries
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Check the hard parts
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
SUGGESTED BUILD STACK
BUILD KIT DIFFICULTY
Not assessed in a Build Kit yet.
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.
