Fun & Function vs Tru Niagen®
Fun & Function (funandfunction.com) and Tru Niagen® (truniagen.com) are stores in related niches (Neuroscience and Vitamins & Supplements) in the AdLibrarySpy index. Tru Niagen® gets more monthly visits than Fun & Function: about 98K vs 84K.
The facts we hold on both, side by side. Checked October 30, 2026.
In short
- Tru Niagen® gets more monthly visits than Fun & Function: about 98K vs 84K.
- Tru Niagen® runs more live Meta ads than Fun & Function: 86 vs 28.
- Fun & Function advertised on more days in the past 12 months: 26 vs 25.
- Tru Niagen®'s store is older: created Nov 2017, Fun & Function's in May 2019.
| Fact |  Fun & Function |  Tru Niagen® |
|---|---|---|
| Monthly visits (SimilarWeb) | 84K (Sep 2026) | 98K (Sep 2026) |
| Live Meta ads | 28 | 86 |
| Store created | May 2019 | Nov 2017 |
| Based in | United States | United States |
| Niche | Neuroscience | Vitamins & Supplements |
| Payment options detected | Apple Pay, Google Pay, PayPal Express Checkout, Shop Pay | Afterpay, Apple Pay, Google Pay, PayPal Express Checkout, Sezzle, Shop Pay |
Questions shoppers ask
- What is the difference between Fun & Function and Tru Niagen®?
- Tru Niagen® gets more monthly visits than Fun & Function: about 98K vs 84K. Tru Niagen® runs more live Meta ads than Fun & Function: 86 vs 28. Fun & Function advertised on more days in the past 12 months: 26 vs 25. Tru Niagen®'s store is older: created Nov 2017, Fun & Function's in May 2019.
- Do Fun & Function and Tru Niagen® sell the same things?
- Both are listed in related niches: Fun & Function in Neuroscience, Tru Niagen® in Vitamins & Supplements.
Facts from the Meta Ad Library, SimilarWeb, Trustpilot and each store; a fact only one of them has is left out. Is Fun & Function legit? · Is Tru Niagen® legit?