If you want a customizable solution that can be adapted for just about any scenario, I recommend using Notion. If you need a solution that's easy to share with people outside your organization, Notion is great and allows individual or team permission-setting. If you want a turnkey solution, Notion might not be the best since it requires a fair bit of set-up. There are templates that can be purchased to handle this, but I haven't found them very helpful.
With ProductPlan you have the ability to manage a project with a totally objective simplicity, it is enough to have a few tasks, organize them, assign the work team that will be performing the respective tasks, customize the route and that's it. ProductPlan is rich in features to get a good project management without having a great learning curve to be able to use this platform, big or small, whether it is very deep or with basic tasks.
I use Notion on my personal tablet, and unlike on the computer, I have a lot of difficulty editing backgrounds, GIFs, and page dividers. It's not as user-friendly, and often the elements end up cut off or misaligned, which is frustrating.
While the current calendar feature is helpful, I'd love to see more customization options. The Google Calendar style isn't always ideal, especially for tasks without specific times or for ongoing projects that require daily maintenance.
It would be fantastic to have more flexibility in customizing Notion pages. For example, I'd love to create planners with the freedom to add illustration boxes, stickers, or GIFs without being restricted to a fixed layout.
Very easy to use (I learned how to use everything on my own) and I was able to set up an entire ecosystem without any courses or other tools. I often say that Notion is like Lego for adults, because there we can use all the available tools to create a multitude of things, from funnels to projects with calculated deadlines and tags.
There are very few problems that we have had with this platform, but from the technical support it has solved everything immediately, from errors with the page to small questions of use. We have simply had a quick response without a hitch when needing help from the ProductPlan support team.
The company uses both Notion and Trello within the company. Notion is more for North America employees while Trello is used between Operation team overseas and in North America. Sometimes it's a preference of how the tools look like for project management. I would say both Notion and Trello are nice tools and serves our needs.
ProductPlan is a direct competitor to Aha!. Whereas JIRA and Trello are for mostly handling the operational tasks, ProductPlan and Aha! are for strategizing. ProductPlan is very well suited to give straight communication on what to achieve in the future and why. JIRA and Trello are the tools managing how to achieve those tasks.