There are many tasbeeh counters that you can get online. There are electronic tasbeeh counters and digital tasbeeh that you can get from alot of places. But none of them is close or as efficient as the tasbeeh counter that we are offering you.
Sometimes when you are reciting in large numbers, it can get a bit tough to recite and keep track on the fingers. The next option you have is of the tasbeeh beads, but they are limited in number and usually come in 100s.
The best option for you is the digital tasbeeh counter. This gives you a track of numbers to millions and billions. There is no way this can get wrong. There is an increment on the press or slide of a button (depending on what variation you use).
This becomes very useful and helpful if you are doing zikr in various forms and large numbers. Often, when one is concentrating on the zikr, they forget the number of repetitions performed, be it on the finger or the tasbeeh beads.
A digital tasbeeh would help you to recall and get the exact number of repetitions that you have performed even if you forget it in the flow.