What is Arc used for?

Arc is an iOS circadian rhythm app that identifies your chronotype and plans caffeine cutoff, light exposure and focus time around your natural energy peaks. It is a good fit for timing the last coffee of the day and scheduling focus work around energy peaks.

How much does Arc cost?

Arc is a paid product with no free plan.

No. Arc is proprietary (closed-source) software. In the Productivity category, open-source options include Foqos, PowerToys and Files.

What are some alternatives to Arc?

Other SaaS products in the Productivity category include Breathbreak, Clocked Out and 1% Better.

Arc: features, pricing and alternatives

About Arc

ARC is an iOS app built around circadian rhythm. It identifies the user's chronotype, using the Lion, Bear, Wolf and Dolphin types, and explains why energy rises and falls during the day, then offers one suggested action for the current moment, such as a short walk during an afternoon dip.

Features include a caffeine cutoff calculated from every drink logged, which moves each time the user adds another drink, a morning light timer, and Trends that measure afternoon crashes over weeks from the user's own check-ins. The website also provides free tools such as a last-safe-coffee calculator and a set of guides on sleep science.

The app works without an account, a wearable or location access. Setup is free, followed by a seven-day free trial on the annual plan, and it is distributed through the App Store. It suits people who want to schedule focus work and coffee around their body clock.

Key features

Chronotype quiz with four animal types
Caffeine cutoff based on logged drinks
Morning light timer
Trends measuring afternoon energy crashes
One suggested action for the current moment
Works without account, wearable or location

Good fit for

→Timing the last coffee of the day
→Scheduling focus work around energy peaks

Tags: circadian-rhythm; chronotype; ios; caffeine; sleep; productivity; wellness

Arc: questions and answers

What is Arc used for?: Arc is an iOS circadian rhythm app that identifies your chronotype and plans caffeine cutoff, light exposure and focus time around your natural energy peaks. It is a good fit for timing the last coffee of the day and scheduling focus work around energy peaks.
How much does Arc cost?: Arc is a paid product with no free plan.
Is Arc open source?: No. Arc is proprietary (closed-source) software. In the Productivity category, open-source options include Foqos, PowerToys and Files.
What are some alternatives to Arc?: Other SaaS products in the Productivity category include Breathbreak, Clocked Out and 1% Better.