Muse S Athena vs HeartMath Inner Balance: Which One Actually Deepens Your Meditation?

I’ve meditated every single day for over twenty years.

Full-time corporate job, three young kids, a healthcare practice to run, and this site to build. Twenty minutes every morning is the only reason it holds together.

So here’s what should tell you how skeptical I am about gadgets: I’ve owned a Muse before, and I gave up on it.

It was uncomfortable, it kept dropping my signal, and it wasn’t accurate enough to be worth the hassle. I went back to meditating with nothing at all.

Which made me a hard sell on the Muse S Athena at about $475, and the HeartMath Inner Balance Coherence Plus at about $249.

One of them is now on my head every morning, and has been for 100 consecutive days. The other one is in a drawer.

The expensive one won — and not for a single reason on the spec sheet.

This is The Test Bench, so the rule holds: I bought both myself, used both in a real twenty-year-old practice, and nobody paid me a cent to prefer one over the other.

The contenders

In the headband corner: the Muse S Athena, made by InteraXon in Toronto.

Seven sensors sit against your forehead, reading the electrical activity in your brain. Alongside them sit a heart rate sensor, a movement sensor that tracks stillness and breathing, and an infrared sensor reading blood flow at the front of your brain.

It turns all of that into a soundscape playing quietly in your ears while you sit. Around $475, one payment, plus an optional Premium subscription I’ll come back to — because you don’t need it.

In the ear-clip corner: the HeartMath Inner Balance Coherence Plus.

A small clip on your earlobe reads your pulse 500 times a second, and a pod clips to your shirt. The app turns your heart rhythm into a live coherence score and gives you a breathing pacer to follow on screen.

Around $249, one payment, and — genuinely to its credit — no subscription at all. App access is included for life.

That difference in scope matters more than the price.

The HeartMath reads one thing: your heart rate. It reads it superbly. The Muse reads your brainwaves, heart rate, stillness, and sleep.

One is a specialist instrument. The other is a general one.

How I tested

I have one meditation practice, and I didn’t change it for either device.

Every morning, as early as I can manage, I sit for twenty minutes in the same chair in my office. Eyes closed.

No guided track, no technique, no mantra — just my breath going in, and out, and in, and out.

That’s been the practice for two decades, and no gadget was ever going to alter it. What I wanted was something that gently helped me get to the quiet place and helped me stay there.

The Muse has been on my head for a hundred days straight — which, as the app cheerfully points out, is also my longest streak ever.

That tells you everything about how the first one went.

The HeartMath got a proper run of daily sessions and then stopped. That looks like a lopsided test, and in a sense it is.

But what happened in that week is the article, and it isn’t that HeartMath is a bad product. It’s a good product that does exactly what it claims.

It’s a requirements mismatch — and that turns out to be far more useful to write about than a winner and a loser.

I also ran a deliberate honesty test on both. That’s Round 4.

Round 1 — Getting set up

I’ll keep this short because there’s nothing to report, and that’s worth reporting.

Both devices are genuinely straightforward. Both apps are clear and easy to follow.

Neither made me hunt through settings, neither refused to pair, and neither demanded an evening of my life before it would work. First session on each, and I was going within minutes.

That’s not nothing. Plenty of hardware in this category treats setup as a hazing ritual. These two don’t.

Winner: A tie, and a deserved one

Round 2 — Eyes open, or eyes closed

Here’s where the whole thing is decided, and it has nothing to do with sensors, accuracy, or price.

Its core method is a breathing pacer on your phone screen — a shape that expands and contracts while you match your breath to it. Follow it properly, and your heart rhythm smooths out, and your coherence score climbs.

It works. I could feel it working.

But I have to look at a phone to do it.

For twenty years, my practice has been eyes closed, breath in, breath out, everything external switched off. Sitting there watching a screen breathe at me isn’t a small adjustment to that — it’s a different activity.

The screen keeps a thread of my attention permanently tied to the outside world, and the outside world is precisely what I sit down to leave.

Every time I closed my eyes because that’s what my body has done every morning for two decades, I’d lost the pacer.

The Muse lets you keep your eyes shut. All of its feedback arrives as sound.

I use the Beach soundscape, playing very quietly through noise-canceling headphones, and it works like this.

That’s the entire interface. Three sounds.

No screen, no numbers, nothing to look at, and nothing to do. I know exactly where I am without opening my eyes or thinking about it.

The moment my mind wanders, the wind picks up and pulls me back without ever fully surfacing me.

It’s the difference between feedback that sits inside the session and feedback that sits outside it.

Winner: Muse, and this single round decides the article

Round 3 — Which one gives the deeper session

Let me describe what I’m actually chasing, because the whole comparison rests on it.

A genuinely deep session feels like this: your heart feels open, your thoughts fall away, and the boundary of your body seems to evaporate. You lose track of time. You are simply still within.

When you come out of it, you feel incredibly relaxed yet completely aware, and you carry a calming sense of confidence and stillness into the rest of the day.

A shallow one is the opposite, and the tell is unmistakable. You never quite find your center.

Thoughts persist, and you catch yourself fighting them, wanting them to be quiet — which of course guarantees they keep chattering away.

Some mornings, there’s simply too much on your mind, and the session pays for it.

I’ll say this plainly, because it matters more than either device: showing up on the bad days is still a win.

Fifteen minutes every single day is infinitely better than three one-hour sessions a week. The habit is the thing.

Your ability to handle the rough sessions only improves because you kept turning up for them.

Against that standard, the Muse gives me the deeper session, comfortably.

Eyes closed, external world shut out, the soundscape sits so quietly underneath that it never breaks the state. It nudges rather than interrupts.

The HeartMath, by design, keeps one door open to the outside. For plenty of people, that’s fine.

For a twenty-year eyes-closed practice, it’s the difference between going under and hovering near the surface.

Winner: Muse

Round 4 — Is the feedback actually honest?

This is the question nobody asks about these devices, so I tested it deliberately.

Both of these things could, in principle, be measuring nothing more than your breathing. Breathe slowly and evenly, and you’d expect any score to climb whether you’re calm or quietly furious.

So I sat down on purpose with something genuinely weighing on me. And on the mornings when something had already got on top of me, no acting was required.

The Muse played louder, blustering wind at me. The HeartMath’s coherence score fell away.

Neither one flattered me, and neither confused a controlled breath for a settled mind.

You can see it in two consecutive mornings on the Muse. Same chair, same twenty minutes, same practice.

August 6th: a score of 98. Eighteen minutes and forty-seven seconds of calm out of twenty. A hundred and eighty-seven birds.

Zero recoveries — meaning my mind never wandered far enough for the app to have to fetch me back.

August 5th: a score of 55. Ten and a half minutes of calm. Sixty-one birds. Eleven recoveries.

I remember both. The device didn’t tell me anything I didn’t know — it confirmed what I already felt, which is exactly what good biofeedback should do.

Winner: A tie — both tell you the truth

Round 5 — Comfort, and the moisturizer

This is where I can compare across generations, because I owned the original Muse and abandoned it.

It was uncomfortable, and it kept dropping my signal. That’s why it didn’t stick.

The Athena is a different object. It’s soft fabric, it’s comfortable, and within a minute of starting, you stop noticing it entirely — which is the highest compliment you can pay anything strapped to your head.

The HeartMath ear clip is a bit clunky by comparison. Not a deal breaker, just never quite invisible.

And now the single most useful thing in this review, which cost me a fortnight of frustration.

For a while, the Athena appeared to be broken. It kept dropping my brainwave signal mid-session — fine one minute, gone the next, no pattern I could see.

Given my history with the original, I was ready to write off the whole product line.

Winner: Muse on comfort — with a warning attached

Round 6 — Cost, subscriptions, and what each is built for

The Muse S Athena is about $475. The HeartMath Inner Balance Coherence Plus is about $249.

Neither requires a subscription to do its job.

Muse does sell a Premium tier, and my honest assessment after 100 days is that you don’t need it. I’ve never paid for it.

All I use is the Beach soundscape and the readout at the end, and the free app gives me both.

Everything behind the paywall — the guided meditation library, the AI coach, the expert programs — is designed for people who want to learn how to meditate. If you already have a practice, the box does everything.

HeartMath deserves real credit here, too. Lifetime app access, no upsell at all, on a device that costs half as much.

If the two had suited me equally, I’d have kept the cheaper one without hesitating.

But here’s the thing my own data made obvious, and it’s the fairest way to explain the mismatch.

A five-minute session averaged 4.9 coherence. A three-and-a-half-minute one hit 5.3, my best.

And the one time I sat with it for a full meditation length — thirty-four minutes — my average coherence came out at 2.2, close to my worst.

That’s not the device failing. That’s the device telling me what it’s for.

HeartMath is built to help you center yourself in a few minutes, several times a day, whenever the pressure builds. It is not built for a long, still, eyes-closed morning sit.

Muse is.

Winner: HeartMath on value — Muse on fit for the job I bought it for

The full scorecard

Every round, side by side. Scored for one specific job: deepening an established daily meditation practice.

How they scored

Same criteria, out of 10, for daily meditation specifically. Muse in green, HeartMath in grey.

The verdict

I quit the last Muse I bought.

This one has been on my head every morning for a hundred days, which is the only review score that really counts.

I put it on, close my eyes, listen for the wind to drop and the birds to arrive, and get a deeper, more consistent session than I was getting on my own.

It doesn’t teach me anything, and I never wanted it to. It quietly confirms where I am and helps me stay there.

The HeartMath isn’t in a drawer because it failed. It’s in a drawer because it wants my eyes open, and I’ve spent twenty years training them shut.

If I could only keep one, the HeartMath goes — and that wouldn’t change if money were no object, because this was never about the money.

Buy the Muse if you meditate. Read the next section before you write off the HeartMath.

Who should buy which

That’s not a consolation prize. Two devices, two different problems. Mine happens to be the morning sit.

Frequently asked questions

Can you use the Muse S Athena with your eyes closed?

Yes, and it’s the main reason I use it. All of the feedback comes through sound, so nothing asks you to look at a screen. On the Beach soundscape, wind means a busy mind, gentle waves mean you’re settling, and birdsong means you’re deep in it.

Is the Muse S Athena better than the original Muse?

Considerably, in my experience. I owned an earlier Muse and gave up on it — it was uncomfortable and kept dropping the signal. The Athena is comfortable enough to forget you’re wearing it, and once I sorted out one setup issue, it’s been rock-solid for a hundred days.

Why does the Muse keep losing its signal?

Check your face cream. The sensors read tiny electrical signals directly off your forehead, and moisturizer blocks them. I spent a couple of weeks thinking my unit was faulty before working this out. Apply skincare after your session, not before.

Do you need the Muse Premium subscription?

No. I’ve never paid for it. The free app gives you the soundscape feedback and a session summary, which is everything an established practice needs. Premium is aimed at people who want a guided library and coaching.

Is the HeartMath Inner Balance any good?

Yes, genuinely. It’s accurate, well-made, app access is included for life, and it costs half as much as the Muse. It just isn’t built for a long eyes-closed sit — its method is a breathing pacer you follow on screen. As a five-minute reset when you’re stressed during the day, it’s excellent.

Which one measures you more accurately?

Both were honest in my testing. I deliberately meditated while stressed on each, and both reported it — the Muse with louder wind, the HeartMath with a falling coherence score. The Muse simply measures more: brainwaves, heart rate, stillness, and sleep, whereas the HeartMath reads only heart rate.

Muse or HeartMath for a beginner?

If you’re building the habit from scratch, either will help, and HeartMath’s guided pacer is arguably the friendlier start at half the price. But the habit matters far more than the hardware. Fifteen minutes every day beats an hour three times a week, every time.

Do you actually need a device to meditate?

No. I meditated for twenty years without one, and for a while I meditated after giving one up. A device won’t build the habit for you — it just tells you where you are once you’ve got one.