Open three competing apps and you can spend an afternoon admiring their differences. One has a dashboard. One has a wizard. One seems to contain an entire small airport.
A useful comparison needs a common task. Otherwise the busiest interface tends to win on paper.
Write the task before opening the apps
For a hypothetical home-inventory comparison, use: “Record one valuable item, attach proof of purchase, and find it again later.” That is specific enough to attempt in each product. It avoids awarding points for unrelated features you never needed.
Use comparable conditions: the same device type where possible, the same storefront or country, the same account stage, and the same input. Record any differences you cannot remove.
Measure friction you can actually observe
Count required steps, note confusing decisions, and record whether the task completed. Keep observation separate from interpretation. “The flow requested an account before I could add an item” is observable. “This destroys conversion” would require data you don’t have.
Capture the price and restrictions relevant to that task. A free tier that cannot export the result may be unsuitable for one user and perfectly adequate for another.
Give the odd app a fair hearing
The minimal app might serve a person who values speed. The elaborate one might serve a family managing hundreds of items. A comparison that declares one universal winner can erase the reason both exist.
Write a short “best fit” sentence for each. Then write the user who would be frustrated by it. This makes your research more useful than a row of green ticks.
Find the opening
Look for a costly compromise shared by your target audience. Perhaps all three assume one person owns the inventory, while your intended users share responsibility. That’s a hypothesis worth testing. It isn’t proof that adding collaboration creates a business.
End with the smallest demonstration of your proposed improvement. If you can’t describe the difference in the context of the original task, you may be comparing interfaces rather than solving a problem.