Just to add to the earlier comment, do not blindly go for any tool. First, understand your bottlenecks. Then, depending on your organization size, budgets, and HR maturity, look for a tool.
Choosing the Right HR Tool
Ideally, an HR tool should allow you to buy in parts as your needs grow. Also, go for cloud options as they provide better technology, easy exit options, and lower total cost of ownership.
Regards,
Ankur