What I learned when building Leavetrack
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Congrats on the launch. Your landing page looks nice. We signed up for a similar product fairly recently. There are a lot of edge cases for time off products. I would expect you'll have a lot of feature requests in the early going.
You might consider "internationalizing" your copy a bit to attract US companies. There would likely be changes you would need to make (international holiday differences, etc) but the US market would nearly be an order of magnitude bigger than the UK.
Thanks for your comments. It's been such a push to launch that I can now start focusing on tweaking the product; internationalisation etc.
Edge cases are a pain. I'm having some discussions with a potential client at the moment and the challenge is turning development for the edge cases that they would like into something that can be extended to all users.
It currently deals with what I think are federal holidays in the US but won't automatically handle state-level holidays. So, if somebody in the US books 5 days crossing 4 July, it won't count 4 July so they'd only use 4 days from their allowance.