Fitness App Cuts CAC 40% with AI Creator Content
Same install volume. 40% lower CAC. Here's how.
A growth-stage fitness app was hitting a creative fatigue ceiling on Meta and TikTok. CAC was climbing month-over-month despite consistent media spend. We built an AI creator engine to dramatically increase creative test volume — and CAC dropped 40% over 90 days.
What's included
- AI creator engine
- 20+ concepts/month
- 3-5 hook variants per concept
- Sustained 6+ months
- 40% CAC reduction
The diagnosis
Creative test volume was the bottleneck. They were running 4-6 net-new concepts per month — not enough to outpace fatigue at their spend level.
The intervention
We launched an AI fitness creator and stood up a content engine producing 20+ net-new concepts per month, plus 3-5 hook variations per concept for testing.
Results
40% CAC reduction over 90 days. Install volume up 22% on the same media budget. Creative refresh cadence sustained for 6+ months without dropoff.
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Frequently asked questions
Can this replicate in other verticals?+
Yes — we've seen 25-50% CAC improvements across DTC, fintech, and SaaS by attacking creative volume the same way.
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