The usual stack is an analytics tool, a heatmap and replay tool, and something for feedback. Three subscriptions, three scripts, three dashboards, and three sets of numbers that do not quite agree.
What the split actually costs
A page weighted three times. Every tool ships its own script, and the visitor pays for all of them.
Three consent positions. If any one of them stores something on the device, the banner is back, and it does not matter that the other two were careful.
Numbers that cannot be joined. The interesting question is nearly always a join: did the campaign that brought the most visitors also bring the ones who rage-clicked the checkout? Two tools cannot answer that without an ID they share and neither of them has one.
Three renewal dates, and the quiet growth of a stack nobody owns.
What one product buys
Analytics, heatmaps and recordings, and feedback in one account means one script, one bill, and one set of identifiers, so a visit that converted and a recording of that visit are the same visit rather than two guesses.
It also means one allowance. Skomi meters everything against a single balance, so sampling recordings is a decision about that balance rather than a second subscription.
When three is still right
Be honest about this, because it is often true.
A real survey programme. If you need targeting, branching and recruited participants, buy a survey tool. A widget is a smaller thing.
Deep behaviour work. If behaviour analysis IS your product and traffic reporting is somebody else's problem, a dedicated tool has years of work in its replay player that a bundled one does not.
A tool your team already lives in. Consolidation that nobody adopts is just a fourth subscription.
The question worth asking
Not "which is best at each job" but "how many of these do we open in a normal week". Most teams answer one, occasionally two, and pay for three.
The three things being counted have precise names (heatmap, session recording and feedback) and the glossary says what each one does and does not include.
Related: one place for app and site analytics, collecting visitor feedback without a survey tool, and the products.