Comparison

moonbird breathing coach vs ChainFlow

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

Head to head
About

moonbird breathing coach

This app guides your breathing using a connected device to help you relax, focus, and sleep better. It offers personalized rhythms based on your body's response and provides insights into your health metrics. Experience a multi-sensory approach to stress reduction and improved well-being.

Highlights
  • Personalized breathing rhythm discovery
  • Tactile device guidance
  • Immersive audio experiences
  • Real-time biofeedback
  • Health insights and trend tracking
  • Wearable device integration
Features
Read full description

Breathe better. Sleep deeper. Stress less. Moonbird is your personal breathing coach. Open the app, follow the guidance, and let your breath settle your body and mind. Everything you need to build a real breathing practice is in the app, whether or not you have the moonbird device. This app is not a medical device and does not diagnose, treat, or prevent any condition. Why most breathing exercises don't stick Most apps give everyone the same pace. But your ideal breathing rhythm is your own, and it shifts with your stress, your sleep, and the time of day. Breathe at the wrong rate and it feels like nothing happened, so people give up. The real fix is finding the right pace, and that's what moonbird does for you. Personalized to you Moonbird shapes each session around your goal, whether that's calm, focus, or sleep. Aura, your AI breathing coach, interacts with you and adapts in real time, with spoken guidance and ambient soundscapes matched to your mood, so each session helps you fully switch off. What you get in the app A full library of breathing exercises with spoken guidance. Static and custom exercises you can shape yourself. Aura, your AI breathing coach, with personalized coaching around your preferences and goals on premium. Wearable connections for Oura and Apple Health. See how your breathing lines up with your sleep, stress, and recovery data over time. Do more with the moonbird device Have the moonbird device, or thinking about it? Hold it in your hand and it sets your breathing rhythm through gentle movement. Breathe in as it expands, out as it contracts. Close your eyes and follow along, no screen needed. The device also measures your body's response, adding real-time biofeedback (heart rate, HRV, coherence) and, on premium, personalized pace discovery that finds your optimal breathing rate from your physiology. Built on real practice Tens of thousands of people breathe with moonbird, together completing more than 2.1 million sessions. What's included The essentials are free: the breathing library, exercise customization, wearable connections, and trend insights. Moonbird premium unlocks Aura, your AI breathing coach, and personalized coaching for relaxation, focus, and sleep. With the moonbird device, premium also unlocks biometric pace discovery and advanced session insights. Start with a 7-day free premium trial. No credit card required. Moonbird. Breathing that knows you. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

ChainFlow

Create highly customized interval timers for any routine, from HIIT workouts to study sessions. Set unique work and rest periods for each segment, with clear audio cues and a distraction-free interface. Save your routines for easy access and hands-free operation.

Highlights
  • Custom interval chaining
  • Adjustable work/rest times per interval
  • Clear audio cues
  • Hands-free operation
  • Screen-off functionality
  • Routine saving
  • Dark interface
Features
Read full description

A custom interval timer for routines where every interval can be different. Most workout timers are built around repeating the same work and rest periods. ChainFlow lets you build the exact sequence you need, with individual timing for every step. Create HIIT workouts, circuit training sessions, stretching and mobility routines, boxing rounds, exercise sequences, drawing practice, focus sessions, and more. BUILD ANY ROUTINE Add as many intervals as you need. Give each one its own name and timing, then drag them into the exact order you want. START FAST WITH TEMPLATES Begin with ready-made HIIT, Tabata, Boxing, Morning Mobility, Pomodoro, and Gesture Drawing templates—or start completely from scratch. Every template becomes a normal ChainFlow routine you can fully edit. HANDS-FREE TIMING Hit Start and focus on what you're doing instead of watching the clock. ChainFlow automatically moves through your sequence and gives you clear audio cues at each transition. • Works while your phone is locked or ChainFlow is in the background • Live Activities and Dynamic Island support • See your current interval and what comes next • Pause, skip forward, or return to the previous interval • Optional 3-2-1 countdown before starting • Works alongside music, podcasts, and other audio • Optional audio ducking during cues BUILD ONCE. USE IT AGAIN. Save your favorite routines, duplicate individual intervals or entire chains, reorder them anytime, and quickly adjust a routine for your next session. ChainFlow works especially well when your routine doesn't fit a rigid repeating timer: • Custom interval workouts • Circuit training • HIIT and Tabata • Stretching and mobility • Boxing and round training • Exercise and strength training • Yoga and meditation sequences • Gesture and figure drawing practice • Pomodoro and focus sessions Whether you're training, stretching, drawing, studying, or building a routine of your own, ChainFlow keeps the timing out of your head so you can stay in the flow.

Screenshots

moonbird breathing coach4 screens
ChainFlow4 screens

Verdict

The call

The clearest difference is rating: ChainFlow at 5.0 against moonbird breathing coach's 2.3. moonbird breathing coach's advantage is update cadence (weekly vs every 2 months) and ratings volume (4 vs 1). On price, ads, in-app purchases and monetization model 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. moonbird breathing coach sells 2 in-app purchases, starting at $9.99 per month and ChainFlow sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

ChainFlow holds the better App Store score, 5.0 against 2.3. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

UpkeepUpdate frequency

moonbird breathing coach ships an update weekly, ChainFlow every 2 months. The most recent releases landed on September 10, 2026 and September 3, 2026 respectively.

Scorecard4 real differences · 6 level
moonbird breathing coach versus ChainFlow: the parameters behind the verdict, then further details
Parametermoonbird breathing coachChainFlow
PriceFreeFree
Rating2.3 (4 ratings)5.0 (1 ratings) — better
Positive reviews0.0% of reviews—
Number of ratings4 — better1
Update frequencyWeekly — betterEvery 2 months
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFreemium
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.1 — better17.0
Further details — not scored
Size109 MB22 MB
Age rating4+4+
DeveloperMoonbirdMichael Ebako-Hodgson

Customer experience

moonbird breathing coach

All ratings4 ratings
Positive25.0%
Neutral0.0%
Negative75.0%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

ChainFlow

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

moonbird breathing coach

Subscriptions2
  • Monthly7 Days trial$9.991 Month
  • Yearly7 Days trial$49.991 Year
1 purchases

ChainFlow

One-time1
  • ChainFlow Pro$4.99

Questions

Is moonbird breathing coach free?
moonbird breathing coach is free to download, with in-app purchases available.
Is ChainFlow free?
ChainFlow is free to download, with in-app purchases available.
Which has better reviews, moonbird breathing coach or ChainFlow?
ChainFlow is rated higher. moonbird breathing coach averages 2.3 out of 5 from 4 ratings, while ChainFlow averages 5.0 from 1 ratings.
Do moonbird breathing coach or ChainFlow have ads?
Neither moonbird breathing coach nor ChainFlow shows ads.
Which is updated more often, moonbird breathing coach or ChainFlow?
moonbird breathing coach ships an update weekly, and ChainFlow every 2 months. Most recently, moonbird breathing coach was updated on September 10, 2026 and ChainFlow on September 3, 2026.

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