Launch week: code PRODUCTHUNT takes 25% off until October 4. The Planner licence is $36.75 for the first year instead of $49, and renews at $49. The buy buttons here already carry the code.

For planners, venues and event teams

Every event you run this year. One tool, $49.

Not per event, not per seat, not per month.

Seatwise is a seating-chart maker that runs in your browser. Paste the guest list, lay out the tables, set who sits together and who does not, press Auto-seat, then print the floor plan, the per-table lists, a find-your-seat board and an escort-card CSV.

Building and auto-seating a chart is free, with no account and nothing uploaded; the guest list stays on your machine, which is the answer most corporate clients are looking for right now. The Planner licence is a flat $49 a year: printing and every export, on unlimited events, with your own name and logo on each plan you hand a client, caterer or venue.

Launched September 2026 by a small team. No investor money, no server bill to outrun, and no customer logos on this page because we are not going to invent any. Try it on one real event before you spend anything.

July – September 2026

Prismm accounts lose the ability to create new events, rolling out account by account.

1 October 2026

Prismm goes view-and-export only. You can read and export, but you cannot design anything new.

31 December 2026

prismm.com access and support end completely. Cvent moves customers to its own diagramming tool.

The Planner licence

What $49 a year actually buys.

One key, pasted into Settings. The badge in the top bar changes from Free to Planner and stays that way for every event you open in that browser for a year.

Unlimited events

Every event, not one.

Seatwise already keeps your events side by side — press Events beside the event name to switch between a Saturday wedding, a Tuesday gala and next month's conference dinner. The Planner licence turns on printing and the exports for all of them at once, instead of a $12 key each.

Your name on the work

“Prepared by” and your logo.

Set your studio name and upload a PNG, JPEG or WebP logo once. Every printed floor plan, per-table list and board then carries your branding instead of ours — the client sees your studio on the paper that reaches their table.

All Pro exports

Floor plan, lists, board, CSV.

The scaled floor plan, per-table guest lists for catering, the printable alphabetical “find your seat” board, and the escort-card CSV your stationer can merge. PDF and CSV, both of which vendors already accept.

Priority email

Your email answered first.

Planner email goes to the top of the queue and is answered by the person who wrote the software, same or next working day. If an export misprints, tell us within 14 days and we refund it in full — and fix the cause.

No account

Nothing uploads, ever.

No login, no password to leak on the morning of an event, no server holding a client's guest list. Plans live in your browser's own storage, and a backup file moves them between machines when you change laptop.

Works at the venue

Offline once it's active.

Seatwise re-checks your key roughly once a month, not every time you open it, so a ballroom with no signal does not lock you out mid-setup. Exports you have already made are yours to keep regardless.

The licence overtakes per-event keys at the fifth event.

Pro keys are $12 each and stay the right answer for a couple planning one wedding. If you are running five or more events a year — most planners, every venue coordinator — the flat $49 is cheaper and you stop thinking about it.

4.1events to break even
Switching from Prismm / AllSeated

Get your data out before 1 October, not before 31 December.

Guest lists export cleanly as CSV. Floor plans and seating rules do not migrate anywhere — not to Cvent's replacement, not to us, not to anyone. The work is re-entering them, so the job is to capture them while the old tool still lets you look.

  1. Export the guest list as CSV, event by event.

    In Prismm open Reports, set Report Type to Guests, choose your fields (name, party size, RSVP, meal, table assignment), Generate, then Export to CSV. Nothing carries between events automatically, so do it once per active event.

  2. Export each floor plan as PDF or image.

    You will not re-import this anywhere, but you want the visual reference while you rebuild: table numbers, room shape, and where the doors, dance floor and head table sit relative to guest tables.

  3. Write down table shapes and seat counts separately.

    A CSV will not tell you that table 4 is a 72-inch round seating 10 and table 9 is a king's table seating 20. A plain list of table number, shape and capacity is enough, and it is the hardest thing to reconstruct from memory later.

  4. Write your seating rules down as pairs.

    Prismm does not export keep-together / keep-apart logic in any reusable form. Before you forget which constraints mattered, list who must sit together, who cannot share a table, and the VIP and head-table rules.

  5. Save the client-facing exports you have already sent.

    Floor plans, escort-card lists, place-card data. They are your fallback if a rebuild runs longer than you planned, and your record of what the client already signed off.

  6. Rebuild the room first, the guests second.

    In whatever tool you pick, re-enter tables, seat counts and rules before you place a single guest. Getting the room right first saves doing the layout twice. In Seatwise that is: add tables, paste the CSV, set the pairs, then Auto-seat.

Start with your next three events, not your archive. Most of a historical event library is reference material that never needs to work again — and rebuilding it under deadline in November is how the October cutoff turns into a bad month.

Honest comparison

What the alternatives cost for unlimited events.

Prices are the published list prices as we checked them in September 2026, in each vendor's own currency. Check them yourself before you decide — they change, and we would rather you found that out here.

Unlimited-events tier of each tool, list prices as published in September 2026.
Tool Unlimited events costs Roughly per year Runs where
Seatwise Planner $49 / yearYearly licence, unlimited events $49 Any browser, no install, no account
PlanSeats Pro $39.99 / monthTheir cheaper $8.99/mo or $50 one-time tier covers one event about $480 Browser, account required
SeatPlan.io Event Manager £25 / monthAlso free to build, £8 one-time per export about $380 Browser, account required
PerfectTablePlan $299.95 one-time, top tierRange starts at $29.95; one-time, not a subscription $0 after purchase Desktop install, per machine

Unlimited-events tier of each tool, list prices as published in September 2026. On a narrow screen the table scrolls sideways.

Where the others are the better buy. PerfectTablePlan is a genuine one-time purchase — if you will use it for five years and never need it on a venue's laptop, it is cheaper than any subscription including ours. PlanSeats has built the most migration tooling and client-collaboration features around this moment specifically. And none of us, Seatwise included, replaces Prismm's full design suite: there is no 3D room rendering here, no AV or rigging diagramming, no room measurement, and no real-time co-editing. Seatwise does guests, tables, rules and print-ready exports. If that is what you actually used Prismm for — and for most weddings, galas and dinners it is — the rest was never the part you were paying for.

Try it free first. We would rather you did.

You do not need any key to judge this. Building the chart is free and unlimited: lay out the tables, paste the guest list, set the keep-together and keep-apart pairs, hit Auto-seat, and look at the result on screen. A key only turns on printing and copying the exports.

  • Free forever to build, preview and rearrange — no card, no account.
  • Ask for a trial Planner key and we send one by email, no strings. We ask for one honest reply about what broke or what is missing.
  • Buy the licence only once it has survived a real event of yours.

Ask for a trial key

One email to a real person. Tell us roughly how many events a year you run and which tool you are leaving, so the reply is useful rather than generic.

Email for a trial key Or just open Seatwise
Questions

What planners ask before switching.

Can I import my Prismm floor plan?

No, and neither can anyone else — Prismm's floor-plan files do not import into competing tools, including Cvent's own replacement. Guest lists are different: export them as CSV and paste them straight into Seatwise. Tables, seat counts and seating rules are re-entered by hand, which for a typical 15-table event is a few minutes, not an afternoon.

Where does my client's guest list live?

In your browser's own storage on your own machine. There is no Seatwise account and no Seatwise server holding it, so there is nothing for us to lose, hand over or be breached for. You can demo that in airplane mode if a corporate client asks.

The flip side: if you clear your browser data the plans go with it. Use the built-in backup file to move events between machines or to keep an archive.

Is $49 a year a subscription I have to cancel?

It renews yearly and you can stop it at any time. If it lapses, Seatwise drops back to free — you keep every PDF and CSV you have already exported, and your events stay in the browser, you just cannot make new exports until you renew. Nothing is held hostage.

Can my client or my assistant open the plan too?

Yes. Share a read-only link — the plan is encoded into the URL itself, so nothing is stored on a server — or send the PDF and CSV exports. Your Planner licence covers your own devices; a colleague working on the same event can open a shared link without any key.

Will Seatwise still be here next year?

A fair question to ask a small team in the month Prismm is closing. The honest answer is the business model rather than a promise: no servers to pay for, no investors expecting an exit, and a price set to be profitable from the first sale. And because exports are plain PDF and CSV and the plans sit in your own browser, the work you have done does not disappear even in the case where we do.

Your next event, and every one after it.

$49 a year, unlimited events, your name on every page that reaches a client.

Launched September 2026 by a small team. Refund within 14 days if an export misprints.