Simple. Transparent. Pay once if you want more.

Yes. The free plan is free forever, no trial, no credit card, and includes unlimited calculations, variables, units, and 200+ currencies. The free plan is limited to one note; Lifetime unlocks unlimited notes, cross-device sync, and priority support.

A note is one independent document inside Notes Calculator: its own scratchpad with its own variables and headings. The free plan gives you one note. Lifetime lets you create as many as you want, so you can keep separate notes for budgets, invoices, trips, and quick math.

No. Lifetime is a one-time payment, from €39.99 and shown in your currency at checkout. You own it. There are no monthly fees, no auto-renewals, and no surprise charges.

Your existing notes stay accessible and you will not lose any data. On the free plan you cannot create additional notes. You can re-enable Lifetime at any time and pick up where you left off.

Lifetime purchases are non-refundable, which is why we recommend trying the free plan first: it includes the full feature set in one note so you can decide before paying. If you run into any issue with your purchase, email us at support@mariuti.com and we'll do our best to help.

Yes. Send us an email at support@mariuti.com from your .edu / .org / verifiable institution address and we'll send a discount code. We try to make Notes Calculator accessible to everyone who needs it.

No. Once you buy Lifetime, you've locked in your price for life, including future updates.

Both plans include macOS, Windows, Linux, Android, iOS, and the Web app.

Payments are handled by Paddle, our secure payment provider. We never see your card details. The price estimate includes applicable VAT / sales tax for your location; Paddle confirms the final amount at checkout.