My friend and I have been building a Slack app for the past month. It's still an MVP, but it has already proven to be useful in many workspaces where users need to request approval from their teammates.
If you go to https://www.berryapps.co and click the "Add to Slack" button you can install Approval Berry to check it out. We would love to hear feedback on the app!
Anyone that provides actionable feedback won't get charged once pricing plans are implemented. Thanks in advance!