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.
NFC & RFID Filament Tag Reader, Writer & Spool Tracker for 3D Printers.
$7.99 · 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 Tag My Spool – NFC Filament: map the core Utilities 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 customization options for tags
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: No cloud backup for tags
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: No notification reminders for tagged spools
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Single purchase model limits access
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.
NFC & RFID Filament Tag Reader, Writer & Spool Tracker for 3D Printers. Tag My Spool lets you read, write, and manage NFC filament spool tags effortlessly — so your 3D printer always knows what material it's working with. Whether you're labeling PLA, PETG, TPU, ABS, or specialty filaments, Tag My Spool keeps your entire filament inventory organized with precise data tracking and instant tag access. The ultimate NFC spool manager and filament organizer — compatible with Anycubic ACE Pro, TigerTag, OpenSpool, and OpenPrintTag. # Key Features - Smart Spool Manager — create and write detailed NFC tags for your filament spools - Save presets for material type, sub-type, color, brand, filament diameter, spool weight, and temperatures - Manage brands, material types, sub-types, spool weights, and filament diameters in settings - Instantly read existing NFC or RFID tags to view stored filament data - Label Printer — print or export spool labels with full customization: arrange fields, bold, italics, and border control # Protocol Support - ACE Pro — full support for all fields including bed temperature, spool weight, diameter, and length. Along with a unique way to allow custom brand filaments to match! - Creality CFS [new] — via an external NFC card writer ACR1555U. There is support for entering custom material ID manually for now. - OpenSpool — JSON-based NFC standard (material, color, brand, hotend temperature) - OpenPrintTag — binary CBOR NFC standard with basic field support (material, brand, sub-type, color, temp, weight, diameter, HueForge TD) - TigerTag — binary NTAG21x protocol with basic field support (material, brand, sub-type, color, temp, weight, diameter, HueForge TD) # Advanced Material Settings - Record temperature ranges (Hotend & Bed) for each filament material - Set filament diameter and spool length in meters - Set TD (Transmission Distance) in Advanced Settings for OpenPrintTag, used by HueForge - Assign a Spool ID (Spoolman-compatible) when using the OpenSpool protocol # Filament Library & Database - Browse the Open Filament Database with thousands of community filament profiles - Filter by brand, material type, and sub-type — PLA, PETG, TPU, ABS, and more - Import profiles directly into your saved tags with one tap # Customization & Filament Organizer - Define brand names, materials, sub-types, diameters, and spool weights (add, edit, or delete) - Assign colors with a visual color picker and named colors for label printing - Choose material type from a built-in list (PLA, PETG, ABS, and more) - Configure bed and hotend temperatures, spool weight, and filament length per preset # Save/Load Tags - Save and load tag configurations as presets for reuse - Keep your filament tracker tidy with Saved Tags — your full spool inventory in one place # Backup & Restore - Export your entire filament inventory (tags, brands, materials) as a JSON backup file - Import backups to restore or transfer your data between devices # Technical Highlights - Full NFC tag reader and writer — NTAG series compatible - Tag formatting — erase all data on a tag when needed - Light/Dark mode support - Data saved locally and synced to iCloud - Works fully offline — no cloud subscription required # Perfect For - 3D printing enthusiasts tracking multiple spool types - Makers managing PLA, PETG, TPU, ABS, and specialty filaments - Anyone using Anycubic ACE Pro, OpenSpool, or OpenPrintTag compatible spools We accept feature requests and bug reports over email — details in the app. Stay organised. Print smarter. Tag your spools.
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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.