I asked for higher rate limits for Intervals.icu this morning and received this automated reply immediately:
Dear Developer,
This is an automatic response to your Strava API rate limit request. At this time, we are not granting requests for rate limit increases. Apologies for any inconvenience this may cause.
Thank you for your understanding.
Best,
Strava API Support Team
This will kill off any Strava app with a growing user-base and no-one will write new ones now.
Intervals.icu probably only has a couple of months before I will have to stop accepting users. So I am fast-tracking separating from Stava and supporting manual .fit file upload + drop box + Garmin Connect integration. Hopefully I can persuade a lot of users to switch to Garmin Connect.