Based on our record, WIP.co should be more popular than ChargeOver. It has been mentiond 2 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
I work for a SAAS recurring billing platform, chargeover.com from my experience you do not need to send them an invoice. If they agree to terms when they signup you could just run a payment against their card on file and send them a payment receipt. It's a pretty slick deal, and there are loads of other options you could enable as well. But to your question it's more common than you think not to send invoices... Source: about 3 years ago
Have you seen wip.chat... I'm not really suggesting it (since they charge you money) but same idea of posting goal points/checkboxes. Source: about 1 year ago
Another concept that's interesting/maybe motivating is wip.chat though I don't suggest it (not free). But it's neat (public todo's). Source: almost 2 years ago
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