I have both and i have to say that there are several aspects that you need to think about before deciding which is better.
First of all, the support in Followliker is horrible. Like, really horrible. If you are looking to get an answer within a couple of days, forget about it. They sometimes let me wait over 10 to 14 days until they come back with an answer. And i am not exaggerating. They were better before they started to take monthly payments. Which is another thing. Usually Followliker used to be a one-time-payment bot only, but they changed their plans, which made them lose a ton of users.
In terms of the software, it's not looking pretty good for them either. The software (Twitter Followliker, i assume the same applies to Pinterest, IG and Tumblr) is buggy. I reported 3 bugs 1 month ago and guess how many of them are fixed at this point: none. - So yeah, you might be paying less and the software will work (to an extend), but before they haven't fixed their pesky bugs which makes the software extremely difficult to operate and fix bugs yourself, i cannot say anything positive about them. Especially since i am paying 9$ per month even after i should've been grandfathered into their program.
Jarvee is a beast. In terms of every aspect. It has a lot of potential, and is really similar to MassPlanner, a software that we had back in the days. There are lots of options you can choose to avoid footprints and it is very easy to understand. The support is amazing and you get responses after 1 day, if not the same day you have made the ticket. The only thing is the price. When you are operating on a large scale with a lot of accounts you need to pay the price for it. And Jarvee is not cheap. But you get a good service.
To sum it up:
Jarvee:
+ Top Notch Support
+ Good Features
+ Easy to understand
+ Very reliable Software
- Expensive
- Monthly Payments
Followliker:
+ Unlimited Accounts
+ Somewhat reliable software if the bugs were fixed
+ Monthly Payments (which are relatively cheap)
- Horrible Support (one of the worst support i have ever had)
- Seems like it's a dieing software at this point
- Unreliable and very hard to operate if bugs are in the software