SRF/YSS vs TUO Life
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SRF/YSS
Explore spiritual teachings and guided meditations based on Paramahansa Yogananda's wisdom. Access digital lessons, audio recordings, and live online meditations to cultivate peace, joy, and a balanced spiritual life.
- Guided meditations
- Live online meditations
- Digital SRF/YSS Lessons
- Audio recordings of Paramahansa Yogananda
- Video instruction in Energization Exercises
- SRF/YSS News and Events
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Experience a life-transforming awakening of the peace, joy, and wisdom of the soul through the teachings of Paramahansa Yogananda, author of the spiritual classic Autobiography of a Yogi. The SRF/YSS app is for everyone—whether you are brand new to the teachings of Paramahansa Yogananda or have been immersing yourself in this great teacher’s wisdom for decades. It is also for anyone who wants to learn more about meditation, the science of Kriya Yoga, and practical ways to live a spiritually balanced life. Featuring: - Guided Meditations on Peace, Living Fearlessly, God as Light, Expansion of Consciousness, and more — with customizable meditation times from 15 to 45 minutes - Free access to live online meditations - SRF/YSS News and Event Information For those who are students of the SRF/YSS Lessons, the app includes the digital versions of your Lessons along with a rich variety of multimedia content to help you apply the SRF/YSS Kriya Yoga teachings in your daily life. Including: - Audio recordings of Paramahansa Yogananda - Guided meditations and visualizations led by SRF/YSS monastics - Classes on the SRF/YSS meditation techniques - Step-by-step video instruction in the SRF/YSS Energization Exercises If you are an SRF or YSS Lessons student, please use your verified account information to access the Lessons in the app. About SRF/YSS Self-Realization Fellowship and Yogoda Satsanga Society of India are an invitation to the spiritual seeker to journey together on a life-transforming discovery of the soul. This journey embraces the “how-to-live” teachings of Paramahansa Yogananda, which embody the highest techniques for realizing who we truly are and show how to bring lasting peace, joy, and love into our lives and into the world. The goal of SRF and YSS is to offer not just a course of philosophical study, but the actual transmission of sacred knowledge through the living words of one of the great spiritual masters of the modern era. Yogoda Satsanga Society of India was founded in 1917 by Paramahansa Yogananda. Self-Realization Fellowship was founded by Paramahansa Yogananda in 1920, to spread the teachings of Kriya Yoga worldwide.
TUO Life
This app helps improve sleep, energy, focus, and mood by controlling smart circadian lights. It uses patented technology to influence your body's natural rhythms, syncing your biological schedule with your daily activities for better health and well-being.
- Regulates circadian rhythm
- Improves sleep quality
- Boosts energy levels
- Enhances focus and mood
- Customizable schedules
- Automatic light mode changes
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Begin your journey to better sleep, more energized days, sharper focus and improved mood with TUO Circadian Smart Lighting. TUO is partnered with the University of Washington, one of the world's top research centers for vision and neuroscience. Scientists there have recently discovered amacrine cells in the eye. These highly light-sensitive cells are the cells that TUO's patented, industry-leading technology affects to influence your circadian rhythm. TUO is more effective than anything else on the market and is the only circadian light therapy product that works at normal brightness levels and reasonable distance. Put TUO bulbs in your bedroom to get exposure when first waking. Put TUO bulbs in your bathroom to get exposure during your normal morning routine. Put TUO bulbs in your kitchen, and make your family breakfast while getting exposure. Put TUO bulbs on your desk, and check email while taking in light. With TUO, you need to stay within six feet of your light during the majority of your Wake mode. After that, you don't need to worry. Just continue your daily routine, and get the light that you need. Artificial lighting isn't healthy. Our bodies receive signals from the lighting around us. These signals set our internal clocks and regulate when we naturally sleep and wake. When we're exposed to general home and work lighting, we don't get the signals that we need to keep our biological schedule synchronized with our daily schedule. Circadian rhythm disorders are problems that occur when your body's internal clock is out of sync with your environment. Symptoms include excessive sleepiness, insomnia, reduced alertness, impaired decision making, poor school/work performance, elevated stress, inability to meet social obligations, changes in appetite and gastrointestinal function, reduced cardiovascular performance, reduced libido, substance abuse, weight gain, high blood pressure and depression. Prolonged misalignment between your biological schedule and your daily schedule puts you at higher risk for heart disease, obesity, diabetes, gastrointestinal problems, neurodegenerative disorders including dementia, skin issues and more. TUO Circadian Smart Products synchronize your biological schedule to your daily schedule by providing the light signals your mind and body need throughout the day. The TUO Life App sets a customized schedule based on your age, chronotype and general wake and sleep times so that you can set it and forget it. TUO Circadian Smart Bulbs change to the right mode at the right time automatically and can be used in any room. Our morning WAKE mode will give you a boost of energy to kickstart your day. Our all-day ACTIVE mode will keep your focus sharp throughout the day. Our evening CALM mode will help you wind down and fall asleep naturally. GETTING STARTED Launch our app and click sign up to get started. Follow the instructions on the screen to walk through initial setup and add your bulbs. You'll be asked to allow the app permissions throughout the setup process. Make sure you allow all permissions as we won't be able to setup your bulbs without them. Add your family members so that they can benefit from TUO as well. When you add family members, our app generates a customized circadian schedule for them. You can give them app login rights or control bulbs on their behalf. You can also assign them rooms so that those rooms always run on their schedule. Add on/off schedules to fully automate your TUO experience. On/off schedules let your bulbs automatically come on and turn off throughout the day. These can be configured for individual rooms and can be different for different days of the week. This allows your lights to automatically come on when you want them to. Use the app to turn rooms and individual devices on and off. Change your light brightness and color temperature to match your preferences. Override your circadian modes at any time. How you use TUO is solely up to you.
Screenshots
Verdict
The clearest difference is review sentiment: SRF/YSS at 83% against TUO Life's 35%. SRF/YSS also leads on rating (4.8 vs 3.9) and update cadence (every 2 months vs every 3 months). On price, ratings volume, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
SRF/YSS holds the better App Store score, 4.8 against 3.9. Both are backed by a comparable volume of ratings — 398 and 264 respectively. Written reviews point the same way: 83% of SRF/YSS's written reviews are positive against 35% of TUO Life's.
SRF/YSS ships an update every 2 months, TUO Life every 3 months. The most recent releases landed on October 20, 2026 and October 24, 2026 respectively.
| Parameter | SRF/YSS | TUO Life |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (398 ratings) — better | 3.9 (264 ratings) |
| Positive reviews | 82.8% of reviews — better | 35.3% of reviews |
| Number of ratings | 398 — better | 264 |
| Update frequency | Every 2 months — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 70 MB | 31 MB |
| Age rating | 4+ | 4+ |
| Developer | Self-Realization Fellowship Church Apps | VERGEOPS, LLC |
Customer experience
SRF/YSS
TUO Life
User reviews
SRF/YSS
From 398 App Store ratingsWhat we love
- 🚀 Convenient access to lessons
- 👍 User-friendly interface
- 🌟 Exceptional content quality
- 🌍 Global accessibility
- 🔍 Helpful search and navigation
Room to improve
- 🐛 Occasional crashes and login issues
- 📱 Limited functionality on mobile devices
- 🔒 Restrictive access controls
- 🔋 Requires constant internet connection
TUO Life
From 264 App Store ratingsWhat we love
- 💡 Great concept for sleep and circadian rhythm
- 👍 Helps with waking up energized
- 👍 Improves sleep quality
- 👍 Useful for winding down at night
- 👍 Effective for adjusting to time zones
Room to improve
- 🐛 App is clunky and slow
- 🐛 App frequently loses connection
- 🐛 App crashes often
- 🐛 Requires repeated logins
- 🐛 Bulbs are buggy
Bugs and requests
SRF/YSS
Reported bugs
3 issues- Incompatibility with latest iOS updates
- Unreliable login and authentication
- Broken lesson access for some users
Requested features
5 requests- Offline mode for lessons
- Landscape mode support
- Customizable highlighting and note-taking
- Integrated dictionary
- Widgets with inspirational content
TUO Life
Reported bugs
59 issues- App glitches too often, requires restart
- Lamp doesn’t turn on automatically
- App loses connection to bulb, requires reset
- App crashes
- Bulbs are buggy
Show 54 moreShow fewer
- App is clunky, functionally limited
- Requires repeated logins
- App functions a little slowly
- Little glitches sometimes, light doesn't turn off when toggled
- Default calm set to 25% always comes on at 100%
- On/off schedules are buggy and don’t always work
- App is not intuitive to use
- Often does not sync or turn on bulbs after programming
- App seems a little glitchy, requires going through steps twice
- Bedroom room setup disappears from app
- App looks like a template, complicated and limited customization
- Doesn’t adjust to daylight savings automatically
- Kelvin values don’t go below 2300
- App menu pushes into phone status bar
- Cannot delete a room once added
- Cannot remove and re-add a bulb
- Bulb becomes an expensive unscanable paperweight if account deleted
- App not functioning, only allows turning light off
- Interface does not properly fit on display size
- Half the functions listed are not functional
- Unable to set up profiles
- Schedule is not working
- Bulb turns on in the middle of the night
- Bulb will not connect
- Doesn’t keep any dimmed settings
- Scheduling works but fade on/off does not
- Light goes from 0 to 100 watts immediately instead of fading
- App has issues connecting
- App is very clunky and frustrating to use
- Transitions between lighting modes are mostly pre-programmed
- App has a mode for setting sleep and wake times but doesn’t track sunrise
- Default settings do not work
- Occasionally, light turns on full brightness out of nowhere
- App is generally super glitchy and hard to use
- Setup is a massive headache, requires 2.5GHz Wi-Fi and Bluetooth
- App/bulbs don't remember default color temp and brightness
- App menu pushes into phone status bar, tricky to hit icons
- Cannot delete a room once added
- Cannot remove and re-add a bulb
- Bulb becomes an expensive unscanable paperweight if account deleted
- App not functioning, only allows turning light off
- Interface does not properly fit on display size
- Half the functions listed are not functional
- Unable to set up profiles
- Schedule is not working
- Bulb turns on in the middle of the night
- Bulb will not connect
- Doesn’t keep any dimmed settings
- Scheduling works but fade on/off does not
- Light goes from 0 to 100 watts immediately instead of fading
- App has issues connecting
- App is very clunky and frustrating to use
- Transitions between lighting modes are mostly pre-programmed
- App has a mode for setting sleep and wake times but doesn’t track sunrise
Requested features
14 requests- Allow customization of wake-up light duration
- Enable automatic adjustment to daylight savings
- Redesign the app with a simpler interface
- Allow saving and defaulting custom colors for specific times
- Customize colors for 'calm' mode
Show 9 moreShow fewer
- Add red light function for night use
- Allow Kelvin values below 2300
- Track sunrise/sunset for wake-up times
- Integrate with HomeKit
- Allow manual adjustment of color temperature and illumination intensity to be saved
- Add option for user-set programmed gradual decrease/increase in color temperature and intensity
- Make app accessible via Bluetooth alone
- Allow users to delete rooms and re-add bulbs easily
- Improve app to prevent bulbs from becoming paperweights
In-app purchases
SRF/YSS
No in-app purchases
TUO Life
No in-app purchases









