You may purchase credit (no minimum required) to access specific sheets you are interested in.

You can at any time load and view your private sheets, but to calculate them (except the free ones) you must have a positive balance in your account.

After having deposited money in your account, when you start modifying one of your sheets, a small amount of money (between 0.2 and 3 Euro) is taken off from your account after asking your confirmation, and you get modification rights on that sheet over a period of 2 full days.

The amount required per sheet is indicated (when due) on the left of each sheet in the menu for your private folders.

If you buy a subscription, you'll be able to access and modify all the private sheets you want.

We offer a monthly subscription for 15 Euro and an annual subscription for 75 Euro.

Please contact us if you are interested in multiple subscriptions.

Payments are done online by means of PayPal secure servers. Note that you'll need at least session cookies enabled to make a payment.

If you prefer to use a bank transfer (annual subscription only) please contact us

A sales tax (VAT) of 22% is charged upon payments done by anonymous users or by private users: please fill in all your data to qualify as a professional user. An invoice is always issued to professional users; upon request to private users.

If you want to make a payment, you should first register and log in, then go to 'My account' -> 'Payments' in the menu.