We used InvoiceQuick some time ago to generate some basic invoices for one-off jobs, and since then kind of forgot about it. Was quite happy and surprised to see it here @ AppSumo, got a lifetime plan out of curiosity, and as it seems now, we are going to actually switch to it for generating all our invoices going forward. There's a ton of features like Estimates, saved customers, recurring profiles that seem like huge time savers, and some features that I didn't yet explore fully.

One thing that seems missing for our specific use case, is Work orders, which would be quite similar to Estimates: something like a projection for an upcoming period (usually 1-3 months), with hourly/daily rates per specific roles, and a range of min/max hours/days of work for these roles for a given project. So that our clients could see and sign off the min/max cost for this period instead of a single total number. However, maybe, it's there and I just didn't figure out how to do it.

Wish Invoicequick team get big here @ Appsumo!