“Engine cranks but won't start after winter.” Ask AI Mechanic.

Describe the symptom in plain words. AI Mechanic answers with your engine model, equipment and recent services in mind, and tells you what to check first.

Free 15 messages a month on Free. Needs an internet connection.

Download on the App Store — Coming soon to the App StoreComing soon to the App Store Get it on Google Play
QRScan to download
Allowance and limits
App screen S-17
Engine cranks but won't start after winter
Let's narrow down what's stopping the fuel from reaching the cylinders.

It knows which engine it is talking about

Free
  • Knows your engines

    Make, model and hours come from your boat record; you never type them into the chat.

  • Knows your engine and history

    Answers take your engine model, equipment and last services into account.

  • An answer for your boat

    Not a generic forum thread: the first checks fit your engine and what was serviced last.

App screen S-17

What it does, and what it does not

AI Mechanic is a starting point. It helps you ask the right questions; a marine mechanic gives the answer.

It does

  • List likely causes, most common first
  • Suggest an order of checks you can do yourself
  • Flag safety notes before you open anything

It does not

  • Give a definitive diagnosis or a guarantee
  • Replace a mechanic or a service visit
  • Read manufacturer manuals; the answer comes from your boat record and general knowledge

Needs a connection. The rest of Vessly works offline; AI Mechanic does not.

A monthly message allowance

Each message you send counts once. The allowance resets every month; unused messages do not carry over.

Free

15

messages / month

Pro

30

messages / month

What leaves your phone

Your message and the boat context (engine, equipment, recent services) are sent for processing. The server keeps no copy of the conversation, and the provider's commercial terms do not allow using it to train models. Everything else in Vessly stays on your phone.

A real exchange

Copied from the app, not written for this page. Long answers are shortened on screen; the text here is the full first reply.

You:

Engine cranks but won't start after winter

AI Mechanic:

Let's narrow down what's stopping the fuel from reaching the cylinders.

First, the basics: Does the engine turn over smoothly and at normal cranking speed, or does it crank slowly or hesitantly?

AI suggestions are guidance, not a substitute for a professional marine service.

Pro

With Pro: 30 messages a month

Pro raises the allowance and adds everything else below.

  • Expense analytics by category and year
  • Boat CV PDF for buyers and surveyors
  • Automatic cloud backup to your own account
  • Larger AI Mechanic allowance

From $29.99 per year

14-day free trial

See pricing

Questions about this

Does it work offline?

Yes. Adding records, ticking checklists and reading your history all work without a signal. Only AI Mechanic and Fleet sync need a connection.

What are the AI Mechanic limits?

AI Mechanic needs an internet connection and has a monthly allowance: 15 messages on Free and 30 on Pro. It gives a first diagnosis based on your engine and service history; it does not replace a mechanic.

All questions

Start with your boat today

Download on the App Store — Coming soon to the App StoreComing soon to the App Store Get it on Google Play
QRScan to download

Three boats free · works offline · no account needed