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.
Every free LLM
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.
Your first Build Kit is free with a verified email.
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 LLMAPI: AI Chat & API: map the core Developer Tools 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 functionality compared to full API services.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: User experience may be cluttered with too many functions.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of customization options for users.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: No offline functionality.
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.
Every free LLM. One app. LLMAPI is a chat client and an API router. It knows which models the big providers give away, how much quota each one has left, and which one is smartest for what you just asked — and it picks for you, on the device, in the moment. AUTO-ROUTING THAT ACTUALLY ROUTES Ask a question. LLMAPI scores every model you can reach right now — by capability, by remaining quota, by how fast it has been answering — and sends your prompt to the best one. If that provider is rate-limited, it fails over to the next one mid-request. Every answer shows what served it: provider, model, latency, and how many failovers it took. Nothing is hidden behind a spinner. Prefer to drive? Priority mode lets you drag the model chain into your own order, or pull models out of routing entirely. WORKS WITH ZERO SETUP No account. No sign-up. No credit card. Four providers serve anonymous free tiers, so the app answers your first message seconds after you open it, before you configure anything. BRING YOUR OWN FREE KEYS Every provider in the list has a genuinely free tier: Google AI Studio, Groq, Cerebras, NVIDIA NIM, Mistral, OpenRouter, Cloudflare Workers AI, Cohere, Ollama Cloud, HuggingFace, GitHub Models and more. Paste a key and LLMAPI validates it live before saving, watches its health, and round-robins across multiple keys for one provider. Keys are stored in the iOS Keychain. They go to that provider and nowhere else — not to us, not through any server of ours. You can also point it at your own local or hosted endpoint — llama.cpp, LM Studio, vLLM, any /v1 base URL. YOUR PHONE AS AN API SERVER (PREMIUM) Turn on the LAN server and your iPhone serves a standard chat-completions API to everything else on your Wi-Fi. Point any chat-completions SDK, the Anthropic SDK, curl, or any agent framework at your phone's address; it auto-routes across every free tier you can reach, exactly like the chat tab. - POST /v1/chat/completions, streaming and non-streaming - POST /v1/messages, Anthropic-compatible - GET /v1/models - Bearer-key authenticated, generated on device - Scan the QR code for a connection page with copy-paste snippets It runs only while the app is open and switched on. A Low Power Screen dims the display to near-black so an OLED draws almost nothing while serving, and a battery guard stops the server at 10% unless you are plugged in. A CATALOG YOU CAN TRUST Hundreds of models across 28 providers, with real rate limits, context windows, tool and vision support. The catalog is fetched from our service and its Ed25519 signature is verified on your device before any model loads. A tampered catalog is rejected. PRIVACY, PLAINLY - Chat history lives in a database on this phone. It is never uploaded. - Provider keys live in the Keychain. They go to the provider, and nowhere else. - There is no analytics SDK in this app. None. - No account to create, so no profile to build. - Your prompts go to the AI provider that answers them, under that provider's terms. That is the only place they go. FREE VS PREMIUM Free, forever: auto-routing, failover, quota tracking, chat history, and the anonymous free-tier models. No trial, no countdown. Premium adds: every model in the catalog rather than the keyless few, the LAN API server, and the live catalog feed — new free models and quota changes reach you the day we ship them instead of thirty days later. Premium Annual is an auto-renewing subscription. Premium Lifetime is a single payment. A NOTE ON AI OUTPUT LLMAPI relays answers from third-party models, including open community models that apply little or no filtering. Output can be wrong, biased, or offensive, and it is not reviewed by us before you see it. Long-press any answer to report it. Do not rely on it for medical, legal, or financial decisions. Terms of Use: https://freellmapi.co/terms Privacy Policy: https://freellmapi.co/privacy Support: [email protected]
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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.
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.