Seat MakervsPrismmSeating and venue planning
Seat Maker vs Prismm (Allseated): seating and migration options
Build your next guest seating plan in Seat Maker while separately preserving your Prismm projects through the Cvent transition.
Prismm is transitioning to Cvent. Review the official migration dates and editable-project access before starting a new event.
Free browser tools · no account needed. Full online access is paid.
Try a real seat change8 fictional guestsAlex is fixed in seat 1. Shuffle the other guests, or select two people to swap.
Why choose Seat Maker?
See what you can do.
Start with your guest names
Import a list, review the fields, then place your people.
Try guest-list import
Put every guest in a seat
Lock VIPs. Shuffle the others. Swap two guests. Undo a change.
Try the seat controls
Keep planning at the venue
Edit saved native seating plans offline on iPhone and iPad.
Explore offline planningReal Seat Maker views with fictional names. Native offline edits work in saved iPhone/iPad plans; online sync and RSVPs need internet.
The key differences.
Full feature breakdown ↓| Your decision | Seat Maker | Prismm |
|---|---|---|
| Best fit | Guest seats & room changes | Existing 2D/3D venue projects & transition |
| Tools | VIP locks, shuffle & undo | To-scale event designs |
| Offline edits | Saved native plans on iPhone & iPad | Not verified in reviewed sources |
| Price | Free browser tools; paid online access & native upgrades | Check current Cvent transition terms |
Vendor-described capabilities. Unknown features are not scored as missing. Full terms & sources below.
The details, when you need them.
Pricing, transfers & official sourcesFull feature comparison8 topics, including devices and offline access
Prismm, formerly Allseated, is transitioning to Cvent Event Diagramming. New events moved to Cvent after August 26, 2026; existing Prismm events remain editable through June 2027, then view-only in Cvent. Seat Maker can be considered for a new seating workflow, but there is no verified one-click importer for an editable Prismm room.
| What matters | Seat Maker | Prismm |
|---|---|---|
| Planning focus | Named guests, individual seats and a practical room plan. | Existing Prismm projects support collaboration around accurate spaces, 2D/3D event designs, tabletop arrangements and guest seating. Follow current Cvent transition guidance for continued project access. Source ↗ |
| Guest and planning tools | Import names, arrange individual seats, lock VIP seats and shuffle other guests. | To-scale event designs. Shared links and layout comments. 2D tabletop settings and photorealistic 3D Source ↗ |
| Layouts and handoff | Room layout tools and native image/PDF exports. Browser tools include drafts, signs and place cards. | Guest seating and RSVP reporting. Reusable layouts/templates Source ↗ |
| Access and devices | iPhone/iPad app, free browser tools and a paid online planner. Features vary by surface. | Existing Prismm workspace and Cvent transition access follow Cvent's current guidance. Source ↗ |
| Offline work | Saved native seating plans can be edited offline. Online RSVPs, sync and published websites require internet. | Do not rely on offline access to preserve an editable Prismm project after sunset. Source ↗ |
| Price and access terms | Free browser tools. Paid online access and separate native upgrades. Review the complete offer before purchase. | New-customer Prismm price not verified; use current Cvent migration/plan guidance. Source ↗ |
| Moving your data | Review a guest-list import. Rebuild room geometry and rules separately. Later updates need reconciliation. | Export floor plans and guest reports before the editing window ends. Source ↗ |
| A reason to choose it | You want to work directly on guests and seats, and keep a local native plan for offline venue edits. | You need to retain Prismm project history, venue visualization and the official Cvent transition path. Source ↗ |
Plans & pricingWhat is free, what is paid and what expires
Seat Maker
Start with account-free browser planning tools and an editable local draft. The full online planner requires paid access. Native upgrades have separate in-app offers.
Checkout shows the current currency, renewal period and total before purchase.
View online access options →Prismm
New-customer Prismm price not verified; use current Cvent migration/plan guidance. Existing paid Prismm customers retain current plans, prices and limits unless choosing a new CED plan, according to the migration page.
Official plan terms ↗Reviewed October 21, 2026. Confirm editors, exports, tax, renewal and access expiry for your region. A suite’s fee covers more than seating.
Bring your guest listImport, rebuild and review
Export floor plans and guest reports before the editing window ends. Keep the originals, import guest data only after checking formats, and budget time to rebuild the room and assignments.
- 1Keep an originalSave the source list and a dated visual plan.
- 2Test a small importReview names, duplicates, groups and accepted fields.
- 3Rebuild & reconcileCheck capacities, fixed seats and unassigned people.
A PDF is a visual reference, not an editable room transfer. A CSV snapshot does not create live sync; choose where future changes will be maintained.
Try Seat Maker’s guest-list import →When Prismm makes senseIts strengths and documented workflow
You need to retain Prismm project history, venue visualization and the official Cvent transition path.
- To-scale event designs
- Shared links and layout comments
- 2D tabletop settings and photorealistic 3D
- Guest seating and RSVP reporting
- Reusable layouts/templates
Existing Prismm projects support collaboration around accurate spaces, 2D/3D event designs, tabletop arrangements and guest seating. Follow current Cvent transition guidance for continued project access.
Editorial workflow illustration from Prismm’s official documentation. Official positioning: “Event design software for collaborative planning.”.
Try a realistic sample120 fictional guests · downloadable CSV
Start with 120 fictional guests, 12 four-person families and four fixed VIPs in 16 eight-seat tables. Cancel Guests 105–108, add Guests 121–124, move Guests 117–120 into the four vacated seats and remove Table 16. The final plan has 120 guests and 120 seats. Keep families together, Guests 053 and 061 apart, and Guests 049–052 in their fixed seats.
Review imported names before setting groups and locks. Extra CSV fields may need manual mapping. This is a reproducible exercise, not a completed competitor benchmark.
Sources & comparison methodOfficial references · reviewed October 21, 2026
Seat Maker publishes this comparison. Recommendations are editorial judgments. Competitor features and prices come from official product, help and pricing materials reviewed October 21, 2026; no paid-account or timed head-to-head benchmark was performed.
- Prismm: product & workflow ↗prismm.com
- Prismm: official reference 2 ↗prismm.com
- Prismm: official reference 3 ↗community.cvent.com
- Prismm: official reference 4 ↗prismm.com
- Prismm: official reference 5 ↗prismm.com
Native images are Seat Maker v3.2.2 on iPhone 17 Pro; browser images are actual tool captures. Names are fictional. No competitor interface has been recreated.
Suggest a correction →Quick answers.
When should I keep Prismm?
You need to retain Prismm project history, venue visualization and the official Cvent transition path.
Can I move my Prismm plan into Seat Maker?
Export floor plans and guest reports before the editing window ends. Keep the originals, import guest data only after checking formats, and budget time to rebuild the room and assignments.
Can I try Seat Maker before buying?
Yes. The public browser planning tools accept your own names and save a local draft without an account. The full online planner and native app upgrades have separate purchase terms.
What should I check about Prismm’s price?
New-customer Prismm price not verified; use current Cvent migration/plan guidance. Existing paid Prismm customers retain current plans, prices and limits unless choosing a new CED plan, according to the migration page.
Can I edit my plan without Wi-Fi?
Seat Maker’s saved native seating plans support local offline edits. Account sync, online RSVPs and published websites require internet. For Prismm: Do not rely on offline access to preserve an editable Prismm project after sunset.
Make your seating plan.
Free browser tools · no account needed. Full online access is paid.