AYO BT+ vs Sym Breathing
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AYO BT+
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AYO BT+ is a unique breathing measurement respirator series invented for breathing training and monitoring for asthmatics, sports, and general health. It consists of AYO BT plus one or two measurement modules, with iOS Apps available on iPhones. Thanks to the unique modular design, the BT+ can be configured as a breathing measurement device, as well as diaphragmatic breathing training offered by AYO BT. Features: Unique 3 in 1 breathing device for asthmatics. Measure breathing during physical exercise. Allow measurement for nose breathing. Patented modular technology enables flexible use options. Instrument-grade accuracy. Key measurements: Lung function indication Realtime breathing waveforms Breath Rate, Minute ventilation, Tidal volume Peak Flow Inhalation and Exhalation time and pauses Breath-hold time Power of breath and work of breath Summary breathing report for meditation and exercises AYO BT+ benefits: 3 in 1: Breathing measurement, training, and lung function indication. Asthma and exercise-induced asthma management. Provide measured insights into your breathing health and capacity. Complement heart rate for key health metrics. Assist in practicing healthy breathing patterns effectively and accurately. Train your breathing muscles and measure breathing effort and efficiency. See your breathing improvement before you can feel it. Provide indication breathing data to trainers or clinicians remotely. Add breathing status in Apple Health App for tracking your overall health. Disclaimer: The App and its connected hardware are intended as an indication only. It is not a medical product and has not obtained any medical licenses. Please seek a doctor’s advice in addition to using this app and before making any medical decisions. However, each device is rigorously calibrated using a scientific measurement instrument from TSI Incorporated. In addition, the accuracy of the indicative Lung function of each device is verified within 5% of a calibrated equipment.
Sym Breathing
This app offers guided breathwork to help you achieve a calm and balanced state. It uses a steady 5.5-second inhale/exhale rhythm to reduce stress, improve focus, and enhance well-being. Features include customizable cues, daily affirmations, and a night mode for sleep.
- Guided 5.5-second inhale/exhale rhythm
- Customizable audio, visual, and haptic cues
- Daily affirmations for positive mindset
- Night mode for reduced blue light
- Seamless audio integration with other apps
- Effortless session initiation
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SYM BREATHING A simple way to slow down, breathe evenly, and find a calmer rhythm. Sym Breathing guides you through a balanced 5.5-second inhale and 5.5-second exhale using smooth visual, audio, and haptic cues. This slow, even rhythm is commonly known as coherent breathing or resonant breathing. Choose a session length, tap the breathing sphere, and follow along. No complicated routines. No overwhelming controls. Just a simple breathing practice you can return to whenever you need a few quiet minutes. GUIDED BREATHING, YOUR WAY Follow the expanding and contracting breathing sphere, listen for gentle audio cues, feel subtle haptic feedback, or combine all three. Choose the guidance that works best for you and your surroundings. A SIMPLE, BALANCED RHYTHM Sym Breathing uses a 5.5-second inhale and 5.5-second exhale, approximately 5.5 breaths per minute. The app keeps the rhythm for you, so you can focus on breathing instead of counting seconds or watching a clock. CHOOSE YOUR SESSION Select a breath count for a defined practice or choose an open-ended session and breathe for as long as you like. DAILY AFFIRMATIONS Begin with a daily affirmation that offers a brief moment of positive reflection before your breathing practice. NIGHT MODE Switch to a warm red interface for a softer visual experience in low-light environments or before bed. LISTEN TO YOUR OWN AUDIO Keep listening to music, ambient sounds, podcasts, or other audio while you breathe. Adjust the breathing cue volume independently to create the experience you prefer. COHERENT BREATHING Slow, balanced breathing practices are commonly used for relaxation, mindfulness, stress management, and supporting autonomic regulation. Research has also explored resonant breathing in relation to heart rate variability, or HRV. Sym Breathing makes this practice easy to follow by guiding each inhale and exhale for you. PREMIUM Unlock all premium features with a monthly or annual subscription. The annual subscription includes a 7-day free trial. Unless canceled before the trial ends, the subscription automatically renews at the displayed annual price. Subscriptions can be managed or canceled through your App Store account settings. HEALTH DISCLAIMER Sym Breathing is intended for general wellness, relaxation, and educational purposes only. It is not intended to provide medical advice, diagnosis, or treatment. If you experience discomfort or dizziness while practicing breathwork, stop the session. Consult a qualified healthcare professional before beginning a new wellness practice if you have questions or concerns about your health. TERMS OF USE (EULA) https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Breathe slowly. Find your rhythm.
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Verdict
The clearest difference is in-app purchases: AYO BT+ at none against Sym Breathing's 3. AYO BT+ also leads on device support (3 vs 1) and iOS requirement (12.1 vs 26.0). Sym Breathing's advantage is update cadence (every 3 weeks vs every 3 months). On price and ads 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
Both are free to download. Sym Breathing sells 3 in-app purchases, starting at $0.99 per month. AYO BT+ asks for nothing beyond the download.
AYO BT+ ships an update every 3 months, Sym Breathing every 3 weeks. The most recent releases landed on October 5, 2026 and October 23, 2026 respectively.
| Parameter | AYO BT+ | Sym Breathing |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.9 (37 ratings) — better |
| Positive reviews | — | 94.1% of reviews |
| Number of ratings | — | 37 — better |
| Update frequency | Every 3 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Freemium |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 12.1 — better | 26.0 |
| Further details — not scored | ||
| Size | 67 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | Aimwell Pty Ltd | Daniel Lubbers |
In-app purchases
AYO BT+
No in-app purchases
Sym Breathing
- Monthly$0.991 Month
- Annually7 Days trial$4.991 Year
- Lifetime$24.99









