KeywordSpy is appropriate for most Internet Market research companies. I would not suggest it for a corporate marketing department unless it's a company with a very larger budget. This is also not a tool for small freelancers even though there is a free option, to get the best benefit of KeywordSpy it's best to use most of its features and options and this can get pricey.
If you're just getting started and want something simple to get a boost on your SEO, then it is a good place to start. It takes you through the initial steps and show you where you can improve. The paid versions are still pretty cheap compared to the competitors, but some of the others have more features and functional areas. However, bear in mind that the main reason this product exists is to provide leads for NPDigital marketing agency, so you'll get a fair amount of push in that direction.
Some of the tool's features, including backlink tracking and competition analysis, were either lacking or more appropriate for the top-performing websites that already had a lot of traffic. So they should improve in this segment
It's really easy to use. The interface is nice and tidy, and the learning curve is low. So it's a tool that's accessible for everyone. If not, there are plenty of guides in the tool itself or on the website. You can easily make lists and export data for use or to share, connect Google Drive, and go work with a team.
They have a lot of information on their website, and also training and contact options in the tool. So you can learn on the go while trying the tool. And if you are stuck, support reacts really fast--sometimes the same day, sometimes the next day due to time zones. Payment is easy and easy to cancel.
Most SEO and market research tools offer what KeywordSpy has but are not as detailed and in one place. Consequently, where you can do everything at KeywordSpy, with other tools you find you have to purchase multiple tools or subscriptions from different providers which also don't integrate with each other. KeywordSpy makes your research easier and more efficient.
We use each SEO research platform for different purposes. I believe they complement each other. Ubersuggest strengths, according to my experience, are related to content ideas, comprehensive keyword research to determine competitors' backlinks, and difficulty in achieving the desired results for any given SEO campaign. The Ubersuggest topic ideas tool gives different insights and benchmarks in relation to other similar platforms that fit our marketing needs.