Amazing Marvin - Customizable task manager and day planner
Amazing Marvin is a customizable task manager that is designed using behavioral psychology to help you get more done while feeling less stressed. Marvin separates where you store (Master List) and work off (daily todo list) your tasks and has tons of built-in tools to help you work better.

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Amazing Marvin
I was told about Amazing Marvin by a colleague, who had stumbled across it, after I had said I was looking for something with more customization and control than the likes of Trello, Asana, Google Tasks etc and so signed up for a trial.
I haven't managed to go through all the options as there are so many however each one has a great description and some also have video guides showing how they work.
The platform is constantly updated with a comprehensive list of the changes along with a video guide showing them. The developers are ultra responsive to feedback and suggestions and even have a great road map showing what they are moving towards.
Some may balk at the price however you get so much for that price I 100% feel it is worth it and they even provide discounts for students which is an awesome gesture.
I don't write too many reviews on things however this has blown me away and I couldn't recommend it enough to people.
Pros:Way too many to name! Tonnes of customization so you can set it up the way you want it. Constant improvement and great team behind it
Cons:None that I have found!
Amazing Marvin
Ultimate Brain for Notion
Great app, the fact that its made by just two people is amazing
Pros:Highly customizable, surprisingly stable, with tons of useful, well-implemented features, this is the task manager to get.
Cons:Understating all the Strategies may be hard
Appreciation Jar
I've tried dozens of todo list apps and day/calendar planning services. Amazing Marvin is the only app that has really worked for me. As of June 2019, the Android / iOS apps are very limited. For example, you can't even reorder tasks. According to dev new apps are coming soon with more functionality.
Pros:- Very customizable through an ingenious extension mechanism - Can be anything from a todo list to a full-blown day planner. - Great support
Cons:- Onboarding experience is not the smoothest. - The modular architecture can be imposing. There over 50 extensions that can be enabled.
Might be right for others, but I went back to Todoist after a 30 day test.
Pros:- versatile - adapts to multiple productivity paradigms - multi-platform
Cons:- a bit confusing to use productivity systems that I already know how to use in other contexts
Amploo