Digital tools that open in your browser and keep your data on your computer.

Every SpectrTech product is a single HTML file. Double-click it, and it runs — on Windows, macOS or Linux, in Chrome, Edge, Safari or Firefox. No login, no subscription, no server.

Try the live demo See the Wedding Planner

Works offlineTurn Wi-Fi off — everything still works. Your data lives in your browser, not on a server.

One-time purchaseBuy once, use as long as you like. No monthly fees, no account to lose.

Private by designNothing is uploaded. There is no server to upload to. Back up the whole plan to one file.

MultilingualInterfaces in 9 languages, including right-to-left Arabic, Hindi and Chinese.

Wedding Planner

17 connected sections: guest list, seating plan with Auto Arrange, floor plan, budget, vendors, payments, timeline, invitations and more
Guest list feeds the seating chart and invitations; choosing a vendor fills the budget and payment schedule
Import guests from Excel / CSV; export invitations as PDF or ZIP
9 languages · any currency · 5 colour themes · one-click backup

Get it on Gumroad$24.99

More planners coming.

Free wedding tools

Budget calculatorTypical split by category, then replace guesses with real quotes. CSV export. Seating chart makerPaste the guest list, drag names onto seats, print. Planning checklist12 months to the day. Tick, save, print.

All free tools → · Free printable PDF checklist →

Wedding planning guides

Checklist, month by month12 months to the day: the decisions that block other decisions, in order. Seating chart without redoing itTag the list first, place groups before people, handle the hard cases. A budget that doesn’t go overEstimated, quoted, final — and category limits that warn early.

All guides →