How it works

No magic. Just the arithmetic, out loud.

ovento is for the person who has an idea for their town and has never organised anything. It keeps the plan, the people, the money and the helpers in one place — and gives an honest read on whether it will work.

Who does what

• Organisers — anyone with an account. You say in what capacity: as a resident in your own name, for an association, for a company or for a municipality. It is declared, not checked, and shown on the event.
• Participants say they are going or interested. Their names are visible to the organiser; their email addresses are not. ovento sends the day-before reminder.
• Sponsors offer a tier or their own amount. The organiser accepts or declines; accepted sponsors are listed on the event. Money is settled between the two of them — ovento does not handle it.
• Partners are everyone else it takes — the municipality and its permits, the venue, suppliers, volunteers, media, safety. The organiser keeps the list, and names and roles are public.

The success score

It is a simulation, not a forecast: ovento is new and has no history of past events to learn from, so it uses a small model built on assumptions it states. Its job is to compare choices — "what if it were on a Saturday?" — not to predict a number to bet on.

1. Start from your reach — the people you can tell directly.
2. The kind of event sets what share of them would come if everything else were neutral: free, on a Saturday, in good season, with a month's notice.
3. Everything else multiplies that share: the ticket price (each kind of event has a price at which interest halves), the day and hour, the season for outdoor settings, the notice you give, and whether you have run events on ovento before.
4. Attendance is capped at capacity, and given as a range — wider for an outdoor event in a season where the weather could go either way.
5. Money is tickets plus sponsorship, against your budget. Accepted sponsorship counts in full, unanswered offers at half, and a goal nobody has offered towards yet only as far as the expected audience makes it plausible.
6. Once it is live, real sign-ups take over in proportion to how much of the sign-up window has passed.
7. The score weighs turnout (40%), money (35%), conditions (15%) and readiness (10%).

Every factor is shown with its effect, and every event page carries the full list of assumptions. The "Try this" suggestions are the same model run again with one thing changed — only changes worth three points or more are shown.

What it does not know: the weather forecast, other events on the same day, how good your poster is. Those are on you.

What each person sees

• The organiser sees everything: budget, reach, the money, the suggestions, every offer and who is coming.
• Everyone else sees the score, the expected turnout and the reasons — but not the budget or the offers. Sponsors also see what the goal works out to per expected attendee.
• A draft is visible to its organiser only.