Comparison

Morpheus Training vs Hummingbird Biofeedback

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Morpheus Training

This app optimizes cardio training and recovery by providing personalized heart rate zones and weekly targets. It uses HRV data to guide intensity and volume, helping users improve fitness and conditioning with zone-based interval training.

Highlights
  • Personalized heart rate zones
  • CardioSmart features
  • Zone-based interval training (ZBIT)
  • Weekly heart rate zone targets
  • Daily recovery score
  • Integrates with wearables and Apple Health Kit
Read full description

Personalized Cardio Made Simple. Morpheus is the only system that gives you truly personalized cardio — dynamic heart rate zones, daily recovery scores, and weekly training targets that adapt to your body every single day. No more guessing how hard to train, which zone you should be in, or how much cardio you need each week. Your Recovery. Your Zones. Your Targets. When paired with the Morpheus M7 heart rate monitor, Morpheus measures your HRV and resting heart rate each morning to calculate your daily recovery score. From there, it sets personalized heart rate zones and weekly targets matched to your fitness level, your goal, and how your body is responding to training. Unlike other apps that give everyone the same fixed zones based on percentages of max heart rate, Morpheus zones are anchored to your real physiological thresholds — the points at which your body shifts how it produces and uses energy. And because those thresholds change daily with your recovery, your zones adjust too. This is especially important for training in your Zone 2 — the most talked about training zone in endurance and longevity research. Zone 2 is most effective when you're training at the right intensity for your individual physiology. Too easy and you're leaving progress on the table. Too hard and you're no longer in Zone 2 at all. Because Morpheus personalizes your Zone 2 range to your actual aerobic threshold — and adjusts it daily based on your recovery — you can be confident you're always training in the zone that delivers the most benefit, not just a static percentage of max heart rate that often misses the mark. Please note: The Morpheus M7 heart rate monitor is required to unlock HRV measurement, recovery scoring, and personalized heart rate zones and targets. Build Your VO2 Max. Improve Your Health. Live Longer. VO2 max — your body's ability to use oxygen during exercise — is one of the strongest predictors of long term health and longevity. Research consistently shows that people with higher VO2 max live longer, healthier lives with a significantly lower risk of cardiovascular disease. Morpheus is built around the training principles that drive VO2 max improvement most effectively. After analyzing data from more than 500,000 workouts and 1 million days of use, Morpheus has learned exactly how much time in each of its three heart rate zones drives the fastest improvements in aerobic fitness and conditioning. Each week it sets a personalized target range for your low, moderate, and high intensity training — so you always know you’re giving your body what it needs and can recover from. Meet your targets consistently and watch your VO2 max and fitness improve. The Morpheus Methods - Train with Purpose Morpheus gives you 12 guided training methods to choose from, each designed to target a specific zone and training purpose — so you can get the most out of every workout. Whether you're focused on building your aerobic base with sustained low intensity work, developing your conditioning for a sport, or pushing your peak fitness with high intensity efforts, there's a method designed for exactly that. Each method gives you a clear structure with your heart rate guiding every phase. No guesswork, no confusion. Just targeted training that’s designed for your body so you can get the most out of every workout.

About

Hummingbird Biofeedback

Features
Read full description

Hummingbird Biofeedback reads the Bluetooth signal your heart-rate strap (Whoop, Polar H10, Garmin HRM, …) is already broadcasting and shows live HRV, beat by beat, on your screen. No server. No account. The strap you already own, finally fully visible — alongside real-time biofeedback for humming, meditation, breathwork, or simply sitting still. Pick a humming pattern and a pitch target moves across the screen, you hum along, and three live readouts update underneath — a real-time picture of what your nervous system is doing, not just one number. — WHAT YOU WATCH, LIVE — HRV 5-minute rolling rMSSD — the same metric used across the HRV ecosystem. Different moment of the day than your nightly score, same math. RSA Vagal depth. Every breath stretches and releases your heart rate; RSA measures how big that swing is, in milliseconds. It's the amplitude of your breath's pull on your heart — and slow, deep humming widens it. Watch it widen, breath by breath. COHERENCE Rhythm, on a 0–100 scale. How clean and orderly that wave is. When your breath and heartbeat settle into one smooth oscillation, coherence climbs toward the resonance "zone" — the difference between a flute holding one clear note and a radio stuck between stations. Why three and not one? HRV alone is jumpy, and during slow breathing it can even dip — even as the rhythm underneath gets deeper (RSA) and cleaner (coherence). The extra two metrics catch what a single number misses, so you can watch a session take shape in real time instead of guessing. What does five minutes of slow humming do to these numbers right now? What about fifteen minutes of meditation? Hummingbird is the simplest answer. — FIVE HUMMING PATTERNS — UNWIND Slow descending hum, the most-studied pattern. DRIFT Long, narrowly-descending hum with a lullaby-shaped contour. ANCHOR A held, steady pitch at a slow cadence. RESONATE Pitch and pace near the cardiovascular resonance band (~6 BPM). EXPLORE Free-form humming — no target, no prescribed cadence. — PLUS STILLNESS — Silent, mic-free biofeedback for any quiet practice — meditation, yoga nidra, body scan, pre-sleep wind-down, post-stress reset. No pitch target, no prescribed cadence. A passive expanding ring paces ~5.5 breaths/minute if you want an anchor; ignore it and the session still captures HRV, RSA, and coherence either way. Pick a 5, 10, 15, 20, or 30-minute timer (or Open) and tag the session with what you actually did, so a 6-ms rMSSD rise after "Pre-sleep" and a 6-ms rise after "Cold plunge" stay sortable in your history. Tap the (i) on any card for the design rationale and references to the published research that informed each parameter (pitch contour, range, cycle timing, session length).

Screenshots

Morpheus Training4 screens
Hummingbird Biofeedback4 screens

Verdict

The call

The clearest difference is in-app purchases: Morpheus Training at none against Hummingbird Biofeedback's 1. On price, update cadence, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Hummingbird Biofeedback sells 1 one-off in-app purchase. Morpheus Training asks for nothing beyond the download.

UpkeepUpdate frequency

Morpheus Training ships an update every 11 days, Hummingbird Biofeedback every 3 weeks. The most recent releases landed on October 15, 2026 and September 29, 2026 respectively.

Scorecard1 real difference · 9 level
Morpheus Training versus Hummingbird Biofeedback: the parameters behind the verdict, then further details
ParameterMorpheus TrainingHummingbird Biofeedback
PriceFreeFree
Rating4.9 (630 ratings) — better—
Positive reviews58.4% of reviews—
Number of ratings630 — better—
Update frequencyEvery 11 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.115.1
Further details — not scored
Size71 MB31 MB
Age rating4+4+
DeveloperMorpheus Labs INCSamantha Chan

In-app purchases

None

Morpheus Training

No in-app purchases

1 purchases

Hummingbird Biofeedback

One-time1
  • Hummingbird Biofeedback$29.99

Questions

Is Morpheus Training free?
Morpheus Training is free to download, with no in-app purchases.
Is Hummingbird Biofeedback free?
Hummingbird Biofeedback is free to download, with in-app purchases available.
Do Morpheus Training or Hummingbird Biofeedback have ads?
Neither Morpheus Training nor Hummingbird Biofeedback shows ads.
Which is updated more often, Morpheus Training or Hummingbird Biofeedback?
Morpheus Training ships an update every 11 days, and Hummingbird Biofeedback every 3 weeks. Most recently, Morpheus Training was updated on October 15, 2026 and Hummingbird Biofeedback on September 29, 2026.

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