Last updated: June 26, 2026
Bass Fretboard Trainer is free to use. The Service does not sell any products or subscriptions, and no payments are taken.
The site only accepts voluntary crypto donations (ETH, BTC, USDC, USDT, SOL, and similar) sent directly to wallet addresses listed on the Service. Because blockchain transactions are irreversible and donations are voluntary tips with no goods or services exchanged, donations are non-refundable.
If you believe you sent a donation in error, you may contact Ali Karakaya through the channels provided on the Service. Any refund is at the sole discretion of the recipient and is not guaranteed.