Website, pricing, platforms and company facts side by side.
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In their own words, as submitted to SaaSHub.
Callulu is a macOS menu bar app that puts one of eight visual cues on screen: a flash to start, a dimming of everything but the center of the screen, a light that passes along one edge at an interval you choose, a lit ember at the edge, a water surface, a still eye, a breathing guide, and a slow...
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How often each product is chosen within a category, 0–100% relative to the other.
As answered by people managing Callulu and Diffee.
Callulu's answer
People who spend long stretches alone at a Mac and want something on the screen to mark the parts of the day: getting started, settling into a task, stepping back, and stopping at a reasonable hour.
It also suits people on older hardware, since it runs on macOS 13 and on Intel as well as Apple silicon.
One caution: the opening cue is a brief flash across the whole screen, and several cues change display brightness. Anyone sensitive to flashing light should leave that cue switched off.
Callulu's answer
LIGHTNING starts the work, SHADE is for focus, LUNA closes the day, and five more sit in between. You pick a cue, and it shows on the screen for a moment or for as long as you leave it on.
Drawing a cue needs no Accessibility or Input Monitoring permission. Settings stay on the Mac.
Callulu's answer
Choose it if you want a cue on the screen rather than a timer. Dimming tools hold one state over the screen for as long as they run, and timer apps count sessions. Callulu has eight cues for different moments of a workday, and you turn each one on when you need it.
It runs on macOS 13 and later, on Apple silicon and Intel. Cues can be started from Shortcuts, Raycast or a terminal command through a callulu:// link. The direct download is $14.99 once and adds keyboard shortcuts; the Mac App Store edition is free for 14 days, then $3.99 once.
If you want blocking or time tracking, one of its competitors will serve you better.
Callulu's answer
Before I knew it, I could no longer control myself, and each time it happened I felt regret and a sense of inferiority.
"Lately, this might be getting a little out of hand."
A small worry like that is why I decided to make an app for staying myself.
Callulu came out as a direct download on 3 September 2026. The Mac App Store edition followed ten days later, on 13 September.
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