TikTok vs Instagram Reels for Ads
Both platforms serve short-form video, but they perform differently for paid advertising. Here's a data-driven comparison.
Audience
TikTok: Younger-skewing (18-34 core), more discovery-oriented. Users are open to new brands.
Reels: Broader age range (18-45+), users already follow brands. Better for retargeting existing audiences.
Cost
TikTok generally has lower CPMs ($6-10) compared to Reels ($8-15). However, Reels often has higher conversion rates because Instagram users are more accustomed to shopping in-app.
Creative
TikTok rewards rawer, more authentic content. Reels can be slightly more polished. You can often repurpose content across both, but native-feeling content performs 20-30% better on each platform.
Attribution
Instagram/Meta has more mature attribution and tracking tools. TikTok's attribution is improving but still less accurate, especially for longer purchase journeys.
Recommendation
Test both with the same budget for 2-4 weeks. For most eCommerce brands, Instagram Reels delivers more consistent ROAS. TikTok excels at brand awareness and reaching new audiences at low cost. The best strategy uses both: TikTok for top-of-funnel, Reels for mid-to-bottom.