And it's been a year. In February, Mr. Sjogreen was planning long-term projects in Seesaw's downtown San Francisco office. In March, he was working out of his Noe Valley home juggling homework for his 9- and 12-year-old children, as well as many of the staff, and Seesaw, he said, was on "quick reaction mode".
Teachers like Sharmeen Moosa, a first grade teacher at an international school in Bahrain, decided that Seesaw would be their distance learning platform.
"Before Covid, I only used it as a children's digital portfolio," said Ms. Moosa, an online collection of her drawings and records, but when her school closed in February, its use "changed massively". She used the app for morning news and daily classes, adding audio or video clips, posting additional resources and creating student assignments, and communicating with families.
Many other teachers used the app in a similar way, uncovering shortcomings that the company needed to fix.
The app, which was developed for iPads and Chromebooks, has hardly been used with Android tablets. But now parents signed up with Amazon Fire or Samsung devices running Android. Many students did not have email addresses and needed another way to log in from home. Teachers who couldn't look over the shoulder of students while they were working on an assignment wanted to comment on saved drafts before students submitted a final version. The notification delays increased from a few seconds to hours. The company's servers sometimes slowed down.
These issues meant teachers, families, and schools turned to Seesaw for help. Mr Sjogreen, who took pride in getting back to customers almost immediately, found that it simply wasn't possible.
"I'm sad that at a time when they were so stressed we weren't reacting as quickly as we'd like," he said.