I used to use salonlite which was fantastic, however sometimes their text reminders didn't send. At first I thought it was my no shows pulling a fast one but as soon as I swapped to Salonium I've only had one actual no call no show in the last 10 months.
Salonium upside is that it takes a booking deposit, which can be as much as you want eg £5, or really useful and full payment so saves time with payments after appointment.
Downside is that it only does one appointment bookings. I fixed this by adding a 'treatment' called 'if you require additional treatments and there is space available after your time, please leave a note and it will be added for you.'
It also doesn't have any reporting, except a price list, and all appointments. Doesn't add anything up for you.
Salonlite is free to start with (and the free is still amazing). The reporting is brilliant, everything you could think to need to know is on there. BUT it doesn't accept payments so people can book appointments and may not show up but you've no way to pay for your time.
Salonium is great and I do like it, but I wish it had the functionality of salonlite.
You can tell which one I prefer because I would rather pay for Salonium monthly (don't think I can out price on here but you can look it up on their site), but next year I will need to move on to
Something that can handle more appointments.
I do love that it sends emails so all my preparation and aftercare is done for me. Saves SO much time, I could never go back to doing that manually.