Quick verdict
Prefer iGraal if you already shop French/EU webshops and like a mature extension + voucher stack. Prefer ShopBuddies if your circle already uses the app and mobile invites feel natural.
Many people keep both: activate whichever shows the higher rate for that store. Never stack two cashback tools on the same order unless both programs explicitly allow it — you risk losing both rewards.
What actually moves your payout
Track one month of purchases in a simple sheet. The “best” app is the one that paid you for stores you already use — not the one with the flashiest homepage.
- Activation before purchase (extension or app confirmation)
- Cookie windows and cancelled orders wiping pending cashback
- Minimum cash-out and payment method fees
- Whether the merchant is listed at a useful rate for BE/NL shipping
Belgium / Netherlands notes
Shipping country and merchant geo matter. A high FR rate may not apply to a BE checkout. Confirm the offer page after login. Pair cashback with a payment card/bank you already trust; cashback is a rebate, not free money.