Basically a more advanced CRM tool based on customer purchase history. The service reminders are nice but with certain services (like broken spoke, new derailleur) added to the a service item the original intended service interval can be stretched further than first desired. Examples of purchase related intervals we've used prior to Citrus: new bike -> 7 day thank you / reminder of 30 of free adjustments / 1 year bike birthday tubeless tire work -> 4 month notice to stop by and get sealant refreshed tune ups -> it's nearly been a year since your last full service (similar to current) winter sale tune ups -> you took advantage last year do so again no sales for XX days -> we haven't heard from you in a while coupon WorkstandIQ (formerly Retail Toolkit) does this currently.