Every Todoist AI vs TickTick AI vs Sunsama comparison ranks them by feature count. That’s the wrong question.
After eight hours a day inside task apps, the only thing I care about is which one’s AI actually changes what I do — instead of bolting buttons onto a list I still ignore. So I ran my real weekly workload through all three for 30 days each, tracking which suggestions I accepted and whether I finished more. One of them rewired my day.
It wasn’t the one with the most AI.
How I Tested All Three (Same Tasks, 30 Days)
I fed the same inputs into each tool: the same client deliverables, the same recurring admin, the same vague “someday” projects that never get scheduled. Thirty days per app, no cherry-picking.
I tracked one metric that matters — which AI suggestions I accepted versus ignored, and whether my actual completion rate moved. Feature lists don’t change behavior. Acceptance rates do.
Price was in my head the whole time: Todoist Pro runs $5/month, TickTick Premium $3/month, and Sunsama a steep $20/month. So the bar for Sunsama was high. It needed to justify being four times the cost of the cheapest option.
One caveat before we start: these aren’t really the same category. Todoist is a task engine, TickTick an all-in-one, Sunsama a daily planning layer. So I began with the one everyone insists has the best AI.
Todoist AI: The Most Capable Assistant, But Did I Use It?
Todoist Assist is the most genuinely AI-powered of the three in 2026. It breaks fuzzy projects into subtasks, suggests smart scheduling, and — via Ramble, launched in January 2026 — turns a rambling voice note into structured tasks.
Two of those earned a permanent spot. Ramble was the surprise: I captured tasks while walking, and it parsed them into clean, dated items without me touching the keyboard. Subtask generation rescued the vague projects — “redo onboarding deck” became six concrete steps I’d have spent ten minutes writing myself.
The smart scheduling was the gimmick. Todoist kept suggesting when to do things, and I overrode it most of the time. It knew my calendar. It didn’t know my priorities — which client was angry, which deadline was soft. That’s the gap between automation and judgment.
So the acceptance pattern was clean: I kept everything about capture, ignored almost everything about prioritization. Todoist wins on raw AI and the fastest path from thought to task. If your bottleneck is getting things into a system, this is the one. The same speed-of-capture logic shaped my AI calendar tools test, where automated scheduling kept guessing wrong too.
But $5 isn’t $3. Does the cheaper TickTick actually give up that much?
TickTick AI: Cheaper, Catching Up, Still Behind
First, let’s kill an outdated claim: TickTick does have AI now. Older reviews — including some high-authority ones from early 2025 — say it has none. That’s wrong in 2026. TickTick added subtask generation and smart date parsing, and they work fine.
For $3/month, the value is real. Natural-language capture is solid — type “call dentist Friday 2pm” and it lands correctly. And the bundle is the draw: calendar, habit tracker, and a built-in Pomodoro timer in one app, where Todoist makes you bolt those on. For an all-in-one, it’s hard to beat at the price.
Where it trails is exactly the AI. The subtask breakdown is shallower than Todoist’s — fewer steps, less context. There’s no voice-to-task equal to Ramble. And prioritization help is thin to nonexistent.
My acceptance data told the story: I used TickTick’s all-in-one features every single day, but I rarely leaned on its AI specifically. The habits and timer changed my routine. The AI didn’t. It’s the best-value all-in-one, full stop.
Which sets up the part I didn’t see coming — the tool that actually changed my planning had almost no AI at all.
Sunsama: Almost No AI, Yet It Changed My Day
Here’s the twist. Sunsama barely uses AI, and it’s the one I kept.
Instead of suggestions, Sunsama leans on structure. Every morning it forces a five-minute planning ritual: you pull tasks from your lists, estimate how long each takes, and timebox them onto the day. Then it does something the others don’t — it warns you when you’ve overcommitted. If your planned hours exceed your real hours, it tells you. So I stopped loading 14 tasks onto a 6-hour day and pretending.
That single constraint is the whole mechanism. The AI features it does have are light — auto-generated daily highlights, and the newer Sunny voice assistant on the $65/month Power Pro tier I didn’t need. Calling Sunsama an “AI tool” oversells it.
But my completion rate rose in those 30 days, and it rose because the ritual changed my behavior. Todoist and TickTick added intelligence to a list I still overstuffed. Sunsama changed the list. The shutdown routine at day’s end — reviewing what got done, rolling the rest forward — meant I started each morning with a real plan instead of a guilty backlog. It’s the closest a task app has come to the intentional habits I look for, the same way the right setup transformed my Notion versus Obsidian note workflow.
The honest cost: $20/month, and more manual work up front. There’s no AI doing the planning for you. You do it — Sunsama just won’t let you lie to yourself about capacity.
So which one did I actually keep?
The Bottom Line: Which One Should You Pick?
Back to the question I opened with: behavior change, not feature count. Judged that way, the rankings flip.
Pick Todoist if your bottleneck is capture — Ramble and subtask generation are the best AI here, and at $5/month it’s the task engine for project jugglers. Pick TickTick if you want the best-value all-in-one; $3/month buys calendar, habits, and Pomodoro in one place, with competent AI on the side. Pick Sunsama if your problem isn’t capturing tasks — it’s actually finishing them. It changed how I plan because structure beat suggestions.
For me, Sunsama won. But the right pick depends on your bottleneck, not mine. Many people run Sunsama as a planning layer on top of Todoist or TickTick — capture in the cheap one, plan the day in Sunsama. That’s the realistic stack when capture and planning are two different problems.
Start with the $3 or $5 tool that matches your bottleneck before paying $20. If you keep overcommitting anyway, that’s your sign Sunsama is worth it.