Preset Amount Buttons vs Free Entry A/B Test

Total amount per assigned user

Divide the total amount of completed transactions by all eligible assigned users, including those who did not complete a transaction.

• Transaction completion rateCompare completed transactions among eligible assigned users who start one.
• Amount per completed transactionCompare transaction amounts among completed transactions only; do not confuse this with total amount per user.
• Custom amount entry rateCompare visitors who enter their own amount.
• Amount correction and cancellation rateTrack transactions corrected or cancelled because the amount was wrong.

• InterfaceCompare free entry with predefined amount buttons and an “Other amount” option.
• Keep constantKeep currency, fees, amount limits and transaction flow unchanged.
• RecommendationsPredefine suggested amounts; results apply to this set of suggestions.
• SelectionDo not preselect a suggested amount.
• AudienceReview first-time and repeat users separately.

1. 1Keep free entry available; do not force users to choose a preset amount.
2. 2Do not preselect a high amount and steer visitors into paying more without noticing.
3. 3Do not change the buttons' presence and amounts together.
4. 4Do not call a win from completion alone without checking average amount.
5. 5Keep amount labels large enough to read.