Derrick Reimer had already lived through a full bootstrapped SaaS arc before SavvyCal existed. He co-founded Drip with Rob Walling in late 2012 and stayed until Leadpages acquired the company in 2016. He then spent a year building Level, a calmer alternative to Slack, and in May 2019 he published a post explaining why he was walking away from it. That post is the clearest explanation of what he did differently next. He wrote that profitability, for him, meant covering his family's cost of living, business expenses and taxes, which he put in the neighborhood of $10k to $15k MRR, and that Level could not reach that under his constraints: every sale needed a whole company to agree, switching away from Slack was expensive, and he had no appetite for hiring a sales team or raising venture money.

In February 2020 he posted a short list of ten questions for spotting market openings, among them "What successful products have critical flaws for a subset of users?" A month later, in March 2020, he wrote the first line of code for what became SavvyCal. That month is the anchor for every number in this story, because he stated it himself: in a September 2021 AMA he wrote that a year after writing the first line of code for SavvyCal in March of 2020, it passed $10k MRR.

The flaw he picked at was social rather than technical. Sending someone a scheduling link carries an awkward power dynamic, and plenty of people avoid sending one for fear of seeming presumptuous. SavvyCal answered that with an overlay that lets the recipient compare your availability against their own calendar, and with the headline "Sending your scheduling link shouldn't feel weird". Derrick has said he arrived at that line by working through April Dunford's positioning framework, because the first question anyone asked was how he differed from Calendly.

Before building much, he ran customer development calls, this time using Rob Fitzpatrick's Mom Test approach after Level taught him how easy it is to collect flattering answers. He picked roughly ten people who were on board with the vision and willing to migrate, then built only enough to cover their use cases. He has said the minimum viable build took a few months, and he deliberately spent that time on the visual booking overlay rather than matching competitor feature lists.

His own podcast, The Art of Product, dates the rest of year one. Episode 134, published June 25 2020, covers the launch of a landing page for a scheduling app then called Mighty Cal. Episode 140, published August 13 2020 and titled "We have customers", reports that he had onboarded a handful of paying customers and was iterating on their feedback, which is the anchor used here for the first customer milestone. Episode 142 covers the rebrand to SavvyCal in September, and episode 144, published September 24 2020, marks the official launch. The pricing page archived in early 2021 shows a single plan at $12 per user per month, with no cost to sign up and set links up before starting a trial.

Growth after launch was not automatic. In late November 2020 an episode titled "Default alive by spring" laid out the goal. Derrick has described scrapping his way to $1k MRR and then hiring Corey Haines part time to run marketing while he stayed on product, a bet he could make because he had raised a small round from TinySeed in 2019, before SavvyCal was even an idea. In January 2021 SavvyCal launched on Product Hunt and finished as the number two product of the month, a launch he chronicled in the January 14 2021 episode. Episode 167, published April 1 2021, is simply titled "Crossing $10k". Counting from the start of March 2020, that is 396 days from first line of code to $10k MRR, and it matches the anniversary framing he used in the AMA.

Six months later he ran a Product Hunt AMA, on October 13 2021, whose title states he had crossed $20k MRR. In that AMA he listed what he believed drove the growth: positioning around a nagging pain point rather than a feature gap, an obsessive focus on usability, letting people create links and explore before putting a card on file, a "Scheduling by SavvyCal" credit on every booking page that quietly puts the product in front of the next person, and the domain authority that accumulated as customers published their links, which helped the SEO work. He also drew the contrast with Level explicitly: SavvyCal can be adopted by one person inside a company and spread from there, and moving over from another scheduling tool takes most people about fifteen minutes.

SavvyCal still operates as an independent company with a small team, and Derrick has not published a newer revenue number, so the $20k MRR he stated in October 2021 is the last figure that came from him rather than from an estimate.