Having gone through the frustration of forgetting about a subscription trial and having to pay for the full membership. They realized that simple, practical software to track your subscriptions would be extremely useful. As a result, They came up with Subly. Hopefully, you find it as useful as I do.
It also has a free version that allows you to track up to 10 subscriptions. If you would like to track more than 10 subscriptions, then you can consider upgrading to the Pro version.