GenScript vs RefillPen
GenScript (genscript.com) and RefillPen (refillpen.com) are stores in related niches (Pharmaceuticals & Biotech and Office Supplies) in the AdLibrarySpy index. GenScript gets more monthly visits than RefillPen: about 382K vs 21K.
The facts we hold on both, side by side. Checked November 1, 2026.
In short
- GenScript gets more monthly visits than RefillPen: about 382K vs 21K.
- GenScript's store is older: created Dec 2016, RefillPen's in Aug 2025.
| Fact |  GenScript |  RefillPen |
|---|---|---|
| Monthly visits (SimilarWeb) | 382K (Sep 2026) | 21K (Aug 2026) |
| Store created | Dec 2016 | Aug 2025 |
| Based in | United States | United States |
| Niche | Pharmaceuticals & Biotech | Office Supplies |
Questions shoppers ask
- What is the difference between GenScript and RefillPen?
- GenScript gets more monthly visits than RefillPen: about 382K vs 21K. GenScript's store is older: created Dec 2016, RefillPen's in Aug 2025.
- Do GenScript and RefillPen sell the same things?
- Both are listed in related niches: GenScript in Pharmaceuticals & Biotech, RefillPen in Office Supplies.
Facts from the Meta Ad Library, SimilarWeb, Trustpilot and each store; a fact only one of them has is left out. Is GenScript legit? · Is RefillPen legit?