Golden Ratio Software Golden Ratio Software Golden Ratio Software Golden Ratio Software Golden Ratio Software Golden Ratio Software Golden Ratio Software Golden Ratio

After an evaluation period of 30 days you have to buy a licence for the program. Otherwise it will stop working.

One licence is required for each computer the program is used with.

How to pay

You can easily pay with PayPal, the most common international payment system for the web.
PayPal is very simple and safe: all you need is an e-mail address and either a credit card or a debit card (check card). The PayPal membership is completely free. You only pay exactly the price shown in the pricing table below. No tax and no transaction fee. You can pay with any currency. It is automatically converted to Euro.

Visit the homepage for detailed information.

Steps to obtain a licence

1. Enter the serial number

You find your serial number on the "Golden Ratio Trial Information" screen of the program.

Serial number

2. Start the PayPal transaction

Click on the "Buy Now" button corresponding with the desired number of licences.

Number of Licences	Price	Price per Licence	Estimated Price in US Dollar
1	11 Euro	11.00 Euro	14 $
3	22 Euro	7.33 Euro	28 $
5	33 Euro	6.60 Euro	42 $
10	55 Euro	5.50 Euro	70 $
15	77 Euro	5.13 Euro	100 $
20	99 Euro	4.95 Euro	120 $
30	144 Euro	4.80 Euro	180 $
40	188 Euro	4.70 Euro	240 $
50	222 Euro	4.44 Euro	280 $

3. After the transaction: get your licence key

After the payment you will get from the PayPal site back to the Golden Ratio site where you find your licence key.
Start the program Golden Ratio. Then enter this key into the text field at the bottom of the "Golden Ratio Trial Information" screen and click on the "Check Licence Key" button.