Plan a creative fatigue diagnosis
Separate a worn-out message from changes in the auction or traffic mix.
The scenario
A campaign's cost per signup climbs from $20 to $32 over two weeks while the audience and promoted offer appear unchanged.
If CPM rose 60% and click and conversion rates stayed steady, auction cost explains the increase. Falling CTR at a stable CPM points toward attention or placement mix.
Apply it to your own work
Compare CPM, CTR, conversion rate, frequency, and placement distribution. Keep the old ad as a control while you introduce a materially different concept.
What to watch for
Launching a color variation may change neither the message nor the audience's response. Test a fresh hook that answers a different objection.
Use a small diagnostic matrix
Compare CPM, link CTR, and click-to-qualified-action rate across two comparable weeks. If CPM stays flat, CTR falls, and post-click quality holds, test a new hook first. If CTR holds and form completion collapses, investigate the landing page or tracking before replacing creative.
Segment by placement before acting. A new placement mix can explain all three shifts without any creative aging. Keep the prior concept live as a comparison where feasible, and compare performance only after enough outcomes mature.
Try a related tool
Measure clicks per impression. Use the same click type, placement scope, and date range across comparisons.
