What Fixiom can and can't do

With just your phone

• Work a problem in plain English. Describe the symptom or paste a code. Fixiom asks the questions a good tech would ask, lays out likely causes with the evidence for and against each, tells you how confident it is, and gives you one next step at a time — not a parts cannon.
• Explain any trouble code — including manufacturer-specific meanings — and flag a code that doesn't belong on your engine (a turbo code on a non-turbo engine gets called out, not explained away).
• Check TSBs and recalls automatically. Every vehicle question is checked against NHTSA technical service bulletins and safety recalls for your exact year, make, and model.
• Look up specs without the guesswork. Oil capacities, torque values, fluids — cross-checked against live sources before Fixiom states them, attributed to your engine and generation.
• Pull the right diagram. Fuse boxes, components, wiring — matched to your vehicle's generation. If Fixiom can't verify the diagram is for your generation, it doesn't show it.
• Read a photo. Send a picture of a part, a connector, a leak — it becomes evidence in the diagnosis.
• Find the right video. When a repair has a good walkthrough on YouTube, Fixiom points you to the search that finds it.
• Talk instead of type. Dictate with greasy hands; have replies read aloud in a natural voice.
• Hand over a clean report. Every concluded diagnosis can export as a customer-presentable PDF — shops can put their own name and logo on it.

With a Bluetooth OBD2 adapter (~$20–30, optional — and these features are free forever)

Any standard ELM327 Bluetooth LE adapter works on iPhone and Android (classic Bluetooth adapters work on Android). The scan-tool layer costs nothing, ever — no subscription, no credits:

• Read and clear codes — stored, pending, and permanent.
• Live data with per-vehicle signal catalogs — hundreds of signals on covered vehicles, including ABS and chassis data on some models — with charts, a full-screen drive view, CSV recording, a trip computer, and a 0–60 timer.
• Freeze frame — what the sensors saw at the moment the code set.
• Emissions health — readiness monitors plus Mode 06 test results: per-cylinder misfire counts, catalyst and O2 sensor margins.

During a paid AI diagnosis, the adapter unlocks the part nothing else in this category does: Fixiom can watch the car live. The AI sets a condition worth catching — say, fuel trims climbing past 10% at warm idle — your phone watches for it locally, and the moment it happens the window is captured and the diagnosis updates on real evidence instead of memory.

What Fixiom deliberately won't do

These aren't missing features. They're the point.

• It won't guess a part number. If Fixiom can't verify the part or component identity for your exact vehicle, it says so and routes you to the right catalog or a visual check — because a confident wrong part number costs you money.
• It won't show you the wrong generation's diagram. A plausible-looking fuse map for the wrong generation is worse than no diagram. Unverified means not shown — and it never generates a diagram with AI.
• It won't state a factory spec it didn't verify. Numbers it can't confirm are labeled as needing confirmation, not passed off as gospel.
• It won't pretend generic OBD2 is a factory tool. ABS, airbag, and body-module codes that need factory protocols are out of reach of any generic adapter — Fixiom says so instead of faking it. No bidirectional tests, no actuations, no reprogramming, no flashing. Read and reason only.
• It won't replace your judgment. Fixiom is a second set of eyes that's fast at lookups and honest about uncertainty. For safety-critical systems — brakes, steering, airbags, fuel — it tells you when a job needs hands-on professional work.

Accounts, ads, and your data

• No account. No email. Ever. The app works the moment it's installed.
• No ads, and no ad partners.
• Purchases go through the App Store / Google Play. The free monthly AI allowance requires nothing from you. Details: Privacy · How the AI works.

Pricing

The plainest version we can write:

• Free forever: code reading and clearing, live data, freeze frames, and emissions checks — plus 10 free AI credits every month (25 in your first month, enough for a full AI diagnosis).
• Hobbyist — $11.99/month (or $119.99/year): 100 credits a month. Sized for someone with a driveway project or two — roughly 4–5 full diagnoses a month, or a lot of quick questions.
• Pro — $29.99/month (or $299.99/year): 250 credits a month, sized for shop flow, with room to run past the cap when a job can't wait.
• Top-ups when you need a bit more: 35 credits for $4.99, 75 for $9.99, 160 for $19.99. Top-up credits never expire.

A typical full diagnosis — conversation, live captures, conclusion — runs about 20 credits. Quick questions and follow-ups are about a credit each. Full details: fixiom.ai/pricing.

Platforms

Fixiom is available for iPhone (iOS) and Android in the United States, in English. More to come.