Reassign: A 24-Hour Circular AI Schedule Planner Built for Makers

Reimagine Your Day with a Single Dial

Most calendar apps look the same: a top-to-bottom timeline, rows of boxes, mechanically reminding you how long until your next meeting. Reassign takes a different approach — it compresses your entire day into a 24-hour circular dial. Midnight sits at the top, noon at the bottom, and time flows around the face like a clock.

The brilliance of this design is that it makes the shape of your day immediately visible. You can drag to carve out time blocks, and when plans fall apart, reshaping them is just a flick of the finger. For makers whose work rhythms are fragmented and constantly shifting, this kind of visualization feels far more intuitive than a traditional linear calendar.

The product currently has 68 upvotes and 6 comments on Product Hunt, ranking 19th. Developed by Leo Spanovic, it ships as a Chrome extension and falls under the Productivity, Calendar, and AI categories.

AI That Actually Rearranges Your Afternoon

Reassign's most compelling pitch is that its AI integration is more than cosmetic. It includes a built-in command palette where you can dump a chaotic list of to-dos or just brain-dump freely — and the AI will rebuild your afternoon schedule in real time.

This means AI isn't treated as an isolated chat window. Instead, natural language input directly acts on the schedule itself. You describe what you need; it figures out how to fit tasks into the right time blocks. This "intent in, schedule out" interaction is one of the most genuinely valuable ways AI is landing in productivity tools right now. Compared to manually dragging every task around, this approach has clear potential to reduce cognitive load for creative workers.

Two-Way Sync: One Dial, Every Source

The life or death of a productivity tool often isn't about features — it's about whether it fits into workflows people already use. Reassign takes this seriously, claiming it can mirror everything.

Google Calendar, Outlook, Todoist, and Linear all support two-way sync. Changes you make in Reassign write back to the original tool, and vice versa. For developers and product managers juggling a project management tool (Linear), a task list (Todoist), and two calendars (Google and Outlook) simultaneously, this ability to aggregate all sources into a single dial may be Reassign's real competitive moat — the thing that genuinely sets it apart from the sea of calendar apps.

Linear is a project management tool designed specifically for software development teams, known for being lightweight and fast, with significant penetration in Silicon Valley developer circles. Todoist is a more general-purpose task list app with millions of users across professions. Bringing together two fundamentally different tools — one focused on team collaboration and issue tracking, the other on personal task lists — alongside Google Calendar and Outlook events in a single interface relies technically on each platform's open APIs and webhook mechanisms. The hard part of "two-way sync" isn't reading data; it's conflict resolution. When both ends modify the same item simultaneously, the system needs clear priority logic — otherwise data corruption is almost inevitable. This is the most common failure point for aggregation tools of this kind, and worth watching closely.

Focus Mode and Energy Curves

Beyond scheduling and sync, Reassign adds two features that speak to how people actually work: a focus mode and a sleep-data-based energy curve.

The energy curve infers your daily energy highs and lows from your sleep data, theoretically helping you slot high-intensity tasks into your peak periods and leave routine work for your low-energy windows. The concept of scheduling around your biological rhythms isn't new, but integrating it with AI scheduling and multi-source sync inside a single circular interface makes the tagline "One dial. Every source." feel a lot less like marketing fluff.

The idea of aligning work to biological rhythms comes from chronobiology. Research into ultradian rhythms has found that human attention cycles through roughly 90-minute peaks and troughs. Better known is the circadian distinction between "larks" (morning types) and "owls" (night types). Reassign's "sleep-data-based energy curve" likely works by pulling last night's sleep duration and quality from Apple Health, Oura, or manual input, then applying these rhythm models to estimate your energy distribution for the day. The real-world value of this feature depends heavily on the quality of that input data — if the sleep data is coarse, the resulting energy curve is just a noisy estimate, not a truly personalized scheduling guide.

What to Watch and What to Question

Reassign has a clear product identity: an AI-native scheduling tool for busy makers, centered on visualization, natural language scheduling, and deep integration. It isn't trying to be another bloated all-in-one calendar — it's built around the single narrative of "reshaping your day."

That said, as a Chrome extension, its use cases may be constrained to browser environments. The accuracy of AI real-time rescheduling, how sleep data is collected and handled from a privacy standpoint, and the stability of two-way sync across a real multi-tool setup all require more user feedback to validate. With 68 upvotes at this early stage, it reads more like a promising product worth watching than a mature, battle-tested solution.

For creative workers who've long struggled with linear calendars and constantly context-switching between task tools, the combination Reassign offers — circular visualization + AI scheduling + universal sync — at minimum represents a fresh and pragmatic direction worth exploring.