Affiliate disclosure
Some links from TierDiff to a service's official site are referral (affiliate) links. If you sign up or buy through one, TierDiff may receive a commission from that service.
What it does not change
- Values, the order of services, whether a service is listed and our picks are the same whether or not it has a referral link.
- Rankings and picks never use our own site traffic, clicks on referral links or conversion data from affiliate networks.
- Any sample comparisons (audio or images made with each service) will use the same script and the same conditions for every vendor.
- Every number still links to the vendor's own pricing page. Source links are never referral links.
- A service without a referral link gets the same official-site link, pointing to its own homepage.
How referral links are marked
Each referral link carries an "affiliate" label with a short note next to it, and is marked rel="sponsored" for search engines.
Services with a referral link
17 services currently have a referral link:
- beehiiv
- Better Stack
- Cloudways
- DigitalOcean App Platform
- ElevenLabs
- Hyperping
- Jotform
- Mailtrap
- Oh Dear
- Postmark
- Proton (Mail / Unlimited)
- Proton Pass
- Railway
- Synthesia
- Tally
- Typeform
- UptimeRobot
This list is generated from the same file the links come from, so it is always current.
Questions about this: hello@tierdiff.com.
Last updated 2026-10-15.