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Brain Sensei
· Shopping
UpdatedAug 17, 2026
The best rate at Brain Sensei right now is 16% back via BeFrugal, ahead of Rakuten at 10% — compared across 3 portals.
| Portals | Offer | Bonus | ||
|---|---|---|---|---|
 BeFrugal Cash back | 16% cash back | 16 cents / $ | $10 (new users) | Shop → |
 Rakuten Cash back | 10% cash back | 10 cents / $ | $10 (new users) | Shop → |
 Price.com Cash back | 8% cash back as of Aug 10 | 8 cents / $ | $10 (new users) | Shop → |
Rates are checked daily against each portal's public listing. Miles and points are converted to effective value using MaxWorth's point valuations, so cash and miles portals are directly comparable. Rates can change at any time — always confirm the rate shown on the portal before checkout. "—" means the store is not currently offered on that portal.