Can I offer different pricing depending on the frequency meaning every 1 month gets 20% off but every 3 months gets only 15% off?
While Bold Subscriptions does not have a feature to discount each frequency separately in one subscription group, you can use prepaid subscriptions to offer increasing discounts the longer a person stays subscribed. For example, you can offer a monthly subscription at a 10% discount, then if a customer decides to prepay for 3 months at once, you can increase discount to 15% off.
Alternatively, you can create separate products or variants for each frequency, and then add them to separate subscription groups with separate discounts for each.