Affiliate Disclosure
How SmartSleepCalc earns revenue โ and why it never changes what we recommend
Plain English summary: SmartSleepCalc.com links to Amazon products. If you buy something through one of those links, we may earn a small commission โ at zero extra cost to you. We only recommend products that are genuinely relevant to sleep science. Commissions never change what we write or how the tools work.
What is an affiliate link?
An affiliate link is a standard website link that includes a small tracking code. When you click the link and make a qualifying purchase on Amazon, Amazon records that the sale came from SmartSleepCalc.com and pays us a small referral commission. The price you pay is identical to the regular Amazon price โ the commission is paid by Amazon, not added to your purchase.
| Label you will see | Where it appears | What it means |
|---|---|---|
| Amazon affiliate link | Near product name or button | Clicking may earn a commission if you buy |
| Commission supports SmartSleepCalc | Below product card | Revenue helps keep the site and tools free |
| Affiliate disclosure | Top of product section | That section contains affiliate-linked products |
Amazon Associates membership
SmartSleepCalc.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising programme designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.
Affiliate links do not affect our recommendations
Every product mentioned on SmartSleepCalc.com is selected based on one criterion only: does it connect to real sleep science? A product that earns us a higher commission but has no sleep science relevance will never appear here. A product we cannot link to but that genuinely helps with sleep may still be mentioned without any affiliate link.
SmartSleepCalc is independently operated
SmartSleepCalc.com is an independent website built and operated by Muzammal Shahzad Butt. It is not owned, operated, sponsored, or influenced by Amazon, any sleep product manufacturer, pharmaceutical company, or healthcare organisation.
Common questions
Do I pay more if I click an affiliate link?
No. You pay the same Amazon price you would see if you searched for the product directly. The commission is paid by Amazon and does not change your price.
What affiliate programmes does SmartSleepCalc participate in?
Currently, Amazon Associates is the only affiliate programme used on this site. This page will be updated if additional programmes are added.
Why does the site use affiliate links?
Revenue from affiliate links helps keep SmartSleepCalc’s calculators, tools, and guides free for everyone. Without this income, the site could not remain free or regularly updated.
Can I trust the product recommendations?
Yes. Products are included only when they are relevant to sleep science topics covered on the site โ such as sleep tracking, light blocking, or sound management. They are not selected or ranked by commission rate.