Sollos vs SwellSpa

Music engineered to help you focus, relax and sleep better. Sollos combines instrumental music from some of the world’s best-known artists with cognitive science and auditory technology designed to support your wellbeing. Listen to specially engineered instrumental playlists from artists including The Weeknd, Post Malone, Selena Gomez, Olivia Dean and Ludovico Einaudi, alongside extended mixes for relaxation, sleep and meditation. There are immersive nature soundscapes too. Everything is organised around three goals: Focus, Relax and Sleep. Sollos is free to download. An active Apple Music subscription or trial is required to unlock the full catalogue. In selected territories, a smaller collection is also available without Apple Music. MORE THAN A PLAYLIST Sollos doesn’t just help you find music. It helps you discover what works for you. Check in with how you’re feeling before and after you listen, compare how you feel across different sessions, and easily return to the audio that works best for you. Explore by goal, see what other Sollos listeners are enjoying, and discover new music for the state of mind you want. MUSIC, RE-ENGINEERED FOR WELLBEING Our cognitive scientists and music experts select and create instrumental music using research into how features such as tempo, harmony, texture and acoustic properties influence attention, relaxation and sleep. We then blend auditory beats into the music to support different listening goals. BACKED BY RESEARCH Sollos is informed by decades of scientific research and our own in-house cognitive science programme. In a published, peer-reviewed study of 308 participants, 30 minutes of Sollos music blended with monaural beats significantly reduced anxiety and improved mood compared with a control group. Our 2025 Listening Impact Study also found: • 91.5% of users reported improved focus after at least 20 mins of listening • 91.9% of users felt more chilled after a single Relax session • Poor sleepers who listened regularly for four weeks reported around an extra hour of sleep per night FOCUS Get into the zone for work, study or anything that needs your full attention. Our Focus music uses gamma auditory beats, which research has linked to improvements in cognitive performance, working memory and creative thinking, alongside carefully selected sonic textures and tempos. “When I start listening to the music I start focusing almost immediately, it's like a wake-up call, and then my mind settles gently into the task.” – a Sollos listener RELAX Switch off, decompress and make space for yourself. Our Relax music uses theta auditory beats for reduced anxiety and improved mood, alongside nature soundscapes designed for calmer listening. “Sollos has been a secret weapon…ready to cure my stress and calm me down” – a Sollos listener SLEEP Wind down at bedtime, drift off or soundtrack a restorative nap. Our Sleep mixes use delta auditory beats and pink noise, which research has linked with better sleep quality and longer, deeper sleep. Some mixes are designed to move gradually from recognisable instrumental music towards near-silence as you wind down. “Sollos became an essential part of my nightly routine” – a Sollos listener MUSIC FOR EVERY KIND OF LISTENER The Sollos catalogue crosses pop, electronic, R&B, hip hop, classical, ambient and more, giving you more ways to find instrumental music that fits both your taste and what you need in the moment. “I'd gone from not sleeping properly, not being able to focus or concentrate, and within 5 minutes of listening to the music it changed everything for me” – Megan, a Sollos listener Discover your soundtrack to a better state of mind. Medical Disclaimer: Sollos is not a medical product and we do not, nor purport to offer, any medical services. For further information, please see the full text of our medical disclaimer: https://find.sollos.app/terms.

SwellSpa is a therapeutic sound app designed by London’s award-winning Swell Studio, founded by international DJ and sound therapist Brian d’Souza. It offers purposeful, end-to-end sound experiences designed exclusively for spa treatment rooms, relaxation rooms and hotel bedrooms. Access a range of therapeutic sound options designed to achieve specific outcomes: deep relaxation, emotional uplift, improved sleep or closer connection to nature - the perfect accompaniment to any massage or treatment, or as a touchless wellness experience. KEY FEATURES: SwellSpa has been shown to deliver a range of health benefits: deep relaxation, cognitive insight, emotional uplift, increased happiness and connection with nature. Sound affects the brain and body in multiple ways. Swell’s unique generative technology uses sound therapy, biophilic sound and binaural frequencies to activate the parasympathetic nervous system, reduce heart rate and boost mood. Users can select their desired outcome from the options outlined below: ~To Feel Inspired ~To Connect With Nature ~To Feel Relaxed ~To Help Sleep DESIGNED WITH THE SPA IN MIND: Sounds can be choreographed to match the duration of the treatment and mood of the customer, delivering a novel listening experience on every listen, meaning no more listener fatigue. SwellSpa can also be accessed via iOS devices - typically set up in treatment rooms, listening stations, integrated with an existing AV set up or on vibracoustic furniture. SwellSpa is supported with workshops, training, on-boarding, and continual support through the process. TRANSPORTED BY SOUND: SwellSpa offers multiple ‘sound journeys’ not generic genres of music - helping to transport the customers to beautiful locations around the world through the power of sound. These include locations in forests or by the sea from The Outer Hebrides to Ibiza, Nepal, Japan, Switzerland, Cape Verde and India. The SwellSpa app puts customers and therapists in control of the experience - the duration of the treatment can be adjusted on the go and the experience becomes more active as a result - raising the value of sound in the treatment room to another level (with no copyright licenses required), and presenting a superior alternative to passive, traditional background music playlists. SCIENTIFICALLY-TESTED: SwellSpa is scientifically tested to reduce stress, lower heart rate, increase cognitive clarity (via the increase of alpha waves) and increase nature connectedness. It achieves this by the unique combination of binaural frequencies which entrain user brain waves, generative technology that adapts to preferences, sound therapy techniques that trigger the parasympathetic nervous system and musical sounds that are created by award-winning musicians. Our research study conducted in partnership with Kinda Studios and Goldsmiths University demonstrated that after only 15 minutes of use, Swell’s soundscape significantly improved relaxation, lowered heart rates, and increased alpha brainwave activity, enhancing creativity and openness. Participants felt more connected to nature, with notable increases in Nature Relatedness (NR) and Nature Connectedness (NC), key to wellbeing and pro-environmental behaviours. The study measured EEG brainwave and heart rate with a detailed questionnaire. ABOUT SWELL: Swell is an award-winning sound and well-being studio based in London, founded by DJ and sound therapist Brian d’Souza. Swell harnesses the power of sound to deliver positive, measurable health benefits for users, combining sound therapy, music composition and nature.