Website, pricing, platforms and company facts side by side.
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In their own words, as submitted to SaaSHub.
No description of Diffee yet.
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...
What each product offers, as listed by its team.
No features have been listed yet.
Walkthroughs and reviews on video.
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How often each product is chosen within a category, 0–100% relative to the other.
As answered by people managing Diffee and Callulu.
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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