Tiimo vs Sunsama: These Solve Two Different ADHD Problems, Not the Same One

I already wrote about Sunsama alongside Structured, where the deciding question was whether you can reliably start a guided ritual on a bad day. This is a different comparison, because Tiimo and Sunsama are not really solving the same problem, despite showing up together in nearly every ADHD app roundup as if they compete for the same slot.

Tiimo is built around a specific ADHD experience: time does not feel real until it is happening, and the gap between activities is where the day quietly falls apart. Sunsama is built around a different one: you can feel time passing fine, but you consistently believe a day can hold more than it actually can, and find out you were wrong at 6pm with half the list still untouched.

Most ADHD roundups treat these as interchangeable daily planners and let price or aesthetic preference decide between them. That framing skips the part that actually matters.

What Tiimo is built for

Tiimo represents your day with icons and colour rather than dense text, and a circular timer that shows time as something visual rather than a number counting down. That distinction matters more than it sounds: a countdown you have to read and interpret is a different cognitive task from a shrinking coloured shape you can feel at a glance, and the second one is the one that actually works for time blindness.

The routine system is Tiimo’s other core strength. Build a sequence once, a morning routine or a wind-down chain, and clone it daily rather than rebuilding it from scratch each time. The specific ADHD failure point this addresses is transitions: the moment between finishing one thing and starting the next, which is disproportionately where a day quietly derails for a lot of ADHD brains, more than any single task itself.

A September 2026 update made this stronger: each step in a broken-down task can now have its own timer. Tiimo also added Siri support and larger home screen widgets, so your plan is visible without opening the app.

Tiimo’s newer AI features let you talk through a task via voice, having it broken down into steps in real time. Some users describe this as a kind of simulated body doubling, a digital presence that helps a task feel started rather than facing it alone. I have covered real body doubling tools separately, and I would treat this as a genuine but different thing: a stopgap for a two-minute task, not a replacement for another person on the harder ones.

What Sunsama is built for

Sunsama pulls tasks from wherever they already live, Gmail, Slack, Notion, Linear, and walks you through building a realistic plan before the day starts. The feature that matters most here is the capacity limit: set a daily work-hour target, and Sunsama tells you plainly when you are trying to schedule more than the day can hold.

This solves a completely different failure from Tiimo’s. It is not about feeling time pass during a task. It is about the moment each morning where you look at a list and genuinely believe six items will fit into a four-hour window, because the part of the brain that estimates duration is the same part that struggles with time in general. Sunsama’s capacity warning is an external check on a piece of self-knowledge that is often just wrong.

The two questions, asked separately

Does your day fall apart in the gaps between things, more than in any single task? If getting from one activity to the next is where you lose an hour without noticing, that is time blindness and transition failure, and it is Tiimo’s problem to solve.

Do you consistently believe a day can hold more than it can, and find out you were wrong in the evening? If your task list is usually accurate in content but wildly wrong in scale, that is workload estimation failure, and it is Sunsama’s problem to solve.

These are not mutually exclusive. Plenty of ADHD brains have both walls, in which case using Tiimo for the routine structure of the day and Sunsama for the honest capacity check on top of it is a reasonable answer, not an extravagance. The subscription cost of running both is real and worth weighing, but it is a cost that follows from having two actual problems, not from indecision.

The honest recommendation

If you only have budget or attention for one, answer the transition-versus-capacity question honestly first. Most people already know which one is theirs; the roundups just rarely ask the question in a way that makes the answer obvious.

Tiimo’s free tier is enough to test the routine-and-timer mechanic before paying anything. Sunsama’s fourteen-day trial is enough to find out whether the capacity warning changes how your evenings feel. Neither trial costs you much to run, and running the wrong one first at least tells you something true about which wall is actually yours.