Drop the free tier for a free trial, and make long-time free users pay too

Replaced the consumer freemium model (basic video telestration free, advanced paid) with a free trial into the paid Golf+ subscription (~$60, now $70/year). Long-time free users were not grandfathered; the change applied to future use and did not hold data hostage. The only free carve-out is students interacting with their own instructor. Decided on instinct because no one could reconstruct why freemium existed; the team accepted the backlash after wargaming complaints and betting that for every 4 complainers, 10 would subscribe.

Revenue grew about 80-90% in 12 months. The App Store reviews from that time were 'a massacre' of one-star reviews from users angry after 9 years free; about 10 subscribed for every 4 who complained.