Calm is one of the most popular meditation apps in the world, and for good reason. It offers a beautiful experience with a huge library of content that covers everything from stress and sleep to focus and self-improvement. Millions of people rely on it daily.
But if your main goal is to meditate during the workday, between meetings, without reaching for your phone, the two apps take very different approaches. This page breaks down what each does well and where the differences are, so you can decide which fits your needs.
Calm: what it does well
Calm has earned its reputation. The app offers a vast library of guided meditations, sleep stories narrated by well-known voices, ambient music, breathing exercises, and masterclasses on topics like resilience and gratitude. The Daily Calm feature gives you a fresh ten-minute session every morning, which many users love as a ritual.
The design is polished and calming. The nature scenes, the gentle interface, the feeling of opening the app and immediately entering a more peaceful space. Calm does this exceptionally well. It is a genuinely enjoyable app to use, especially for winding down in the evening or easing into sleep.
Calm is mobile-first. It works on iOS and Android, with a web player available too. That makes it a great companion for meditation on the go, at home, or during travel. The breadth of content means there is almost always something that fits your mood or interest, whether that is a five-minute breathing exercise or a forty-five-minute sleep story read by Matthew McConaughey.
Pricing is $14.99 per month or $69.99 per year, with a limited free tier and a lifetime option.
Mellem: what it does differently
Mellem is a Mac menu bar app built specifically for meditating during the workday. Rather than offering a large content library to browse, it focuses on one thing: helping you take short, guided meditation sessions in the gaps between meetings.
Mellem connects to your Google Calendar or Apple Calendar and reads your schedule. It also monitors whether your microphone is in use, which means it knows when a call is actually happening and when it ends, not just when it was scheduled to. If a meeting finishes ten minutes early, Mellem notices. If you take an unscheduled call that was never on your calendar, Mellem picks that up too.
When a real gap appears, Mellem suggests a session that fits the available time. If you have five minutes before your next call, you get a five-minute session. When the session ends, a button takes you straight into your next meeting. No app-switching, no clock-watching.
Before each session, Mellem asks how you are feeling. Stressed, anxious, tired, drained, frustrated, restless. The session is then tailored to your mood, so you get something relevant rather than generic. You can choose guided meditation with a voice or unguided mode with just a timer.
Sessions are short by design: 3, 5, or 7 minutes. These are micro meditations built for the reality of a packed calendar, not long-form content you need to carve out time for.
Mellem costs $9.99 per month or $59.99 per year, with a free 14-day trial that requires no card.
Key differences
| Calm | Mellem | |
|---|---|---|
| Platform | iOS, Android, web | Mac (menu bar) |
| Content | Vast library (meditations, sleep stories, music, masterclasses) | Curated, mood-tailored work sessions (3, 5, or 7 min) |
| Calendar integration | No | Yes (Google Calendar, Apple Calendar) |
| Meeting detection | No | Yes (detects when calls actually end) |
| Session approach | Browse and choose from library | Auto-suggested at the right moment |
| Auto duration | No | Yes (fits the gap between meetings) |
| Join next meeting | No | Yes (one button after session ends) |
| Price | $14.99/mo or $69.99/yr | $9.99/mo or $59.99/yr |
When to choose Calm
Calm is an excellent choice when:
- You want a large, varied content library. Meditations, sleep stories, music, masterclasses, and breathing exercises in one polished app.
- You primarily meditate outside of work hours. Calm shines as an evening wind-down tool and sleep companion. The Daily Calm is a lovely morning ritual.
- You want a mobile app. Use it on a commute, during a lunch break, or lying in bed. It goes wherever your phone goes.
- You enjoy browsing and discovering content. Calm's library rewards exploration, with new sessions, guest narrators, and themed collections.
When to choose Mellem
Mellem is built for a specific context: the workday. It is a good fit when:
- You want meditation that fits your workday automatically. Mellem watches your calendar, detects when calls end, and suggests a session at the right moment. No remembering, no browsing, no deciding.
- You work at a Mac all day. One click in your menu bar and you are in a session. No phone needed.
- You have tried meditation apps before but never open them during work. Mellem removes that friction entirely by coming to you.
- You want sessions that respect your schedule. Auto-duration fits the session to the gap you have. The join button takes you straight into your next call.
Using both
Calm and Mellem are not competing for the same moment in your day. Many people find that different tools work better for different contexts. Calm for evenings and weekends. Mellem for the workday. One does not replace the other.
If you already use Calm and love it, Mellem can complement that practice by covering the part of your day that a phone app struggles to reach: the five minutes between your 2 p.m. standup and your 2:15 design review, when you are still at your desk, still in work mode, and would never think to pull out your phone and open an app.
That is the gap Mellem is built for. The rest of the day, Calm has you covered.
You might also find our comparisons with Headspace and other apps on our best meditation app guide helpful as you decide what works for you.