Grammarly vs Sudowrite affiliate programs
Grammarly and Sudowrite are AI writing tools that both run affiliate programs. Grammarly lists $0.20 per free signup + $20 per upgrade through Impact; Sudowrite lists no public rate through Rewardful. One of the two does not state a cookie window, so the attribution windows cannot be compared. aifilliate records each program from a cited vendor source and does not rank the two.
| Recorded term | Grammarly Verified | Sudowrite Unverified |
|---|---|---|
| Commission | $0.20 per free signup + $20 per upgrade | Not stated |
| Structure | One-time | Unlisted |
| Cookie window | 90 days | Not stated |
| Network | Impact | Rewardful |
| Payout threshold | Not stated | Not stated |
| Terms checked | 2026-08-22 | 2026-07-03 |
| Source | Open source ↗ | Open source ↗ |
What matches, what differs
Differences
- Different platforms: Impact against Rewardful, meaning two dashboards and two payout schedules.
In common
- Both are AI writing tools.
What these terms mean in practice
Promoting both means two applications, two dashboards, and two payout schedules — Impact for Grammarly and Rewardful for Sudowrite, each with its own approval and its own minimum.
What is not published
Anything below has to be confirmed with the vendor before either offer can be modelled. aifilliate records it as unknown rather than estimating it.
- Neither vendor publishes a payout threshold.
- Sudowrite does not publish a commission rate.
- Sudowrite does not publish whether the payout recurs.
- Sudowrite does not publish a cookie window.
How to read these two records
One of the two does not publish a commission figure, so the payouts cannot be set against each other.
The payout structure is not stated for both programs. One of the two does not state a cookie window, so the attribution windows cannot be compared.
aifilliate publishes no ranking between Grammarly and Sudowrite. Which program earns more depends on plan price, conversion rate, retention, and refund reversals in your own audience — none of which appear in published affiliate terms. Confirm eligibility, paid-search and trademark rules, and payout timing with each vendor before promoting either.