Altara vs 4VIDA SYNC
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Altara
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Es un mixer de sonidos que sirven para inspirar a los usuarios a entrar en estados meditativos para relajarse y sentirse mejor. Entre los tipos de sonido tiene loops, ondas binaurales y armónicos. Tiene la opción de ingresar la frecuencia de un instrumento musical externo para que se complementen al escuchar el mixer y el instrumento juntos en el ambiente. También tiene la opción de elegir un color para proyectarlo desde el celular a un vaso de agua. Esta es una experiencia muy hermosa que inspira la belleza en los usuarios. It is a mixer of sounds that serve to inspire users to enter meditative states to relax and feel better. Among the types of sound it has loops, binaural waves and harmonics. You have the option of entering the frequency of an external musical instrument so that they complement each other when listening to the mixer and the instrument together in the environment. You also have the option of choosing a color to project from your cell phone onto a glass of water. This is a very beautiful experience that inspires beauty in users.
4VIDA SYNC
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Sleep, focus, deep calm — with sound generated live from your heartbeat. 4VIDA SYNC doesn't play back a finished file. Every session is created in the moment you hear it — like a live concert instead of a recording. Via Apple Watch, the sound follows your heart rate variability (HRV) and adapts to your nervous system in real time. YOUR BIO-TONE Before your session, 4VIDA SYNC runs a sweep calibration to find the frequency your nervous system responds to most clearly — your vital signature. From it emerges your personal bio-tone, the root note of every soundscape. Same mode, different person, different sound. SMART SESSIONS — SIX MODES WITH LIVE ADAPTATION • REST — drift into sleep • RECOVER — deep regeneration • RELEASE — let go • FOCUS — clear concentration • CONNECT — present and grounded • ACTIVATE — awake and ready With Apple Watch, the audio engine continuously adapts to your heart rate variability during the session — like a good running shoe adapting to your foot. ELECTRIC MOODS — SOUND FOR ALONGSIDE Four moods without ritual: FOCUS, RELAX, SLEEP and MOVE. Switch on, carry on — with a sleep timer for the night. SHARED SESSIONS Listen together: in sync at the same time, with the same reference tone. Or start a partner session with an invite code — two people, even across any distance. WHAT TO EXPECT • Your sound is generated live on your device — no streams, no sample loops • Apple Watch optional, recommended for live adaptation • Headphones recommended — the stereo texture only unfolds on two channels • Sleep timer, "Continue where you left off", Siri shortcut • Dynamic Island + Lock Screen controls • Ambient videos as gentle visual companions YOUR DATA Your Apple Health data stays in Apple Health. Your sound is computed entirely on device. Session results are stored encrypted in your account — export them anytime, or delete your account and data right in the app. PRICE Start free. 4VIDA Plus unlocks everything — 7-day free trial. The subscription renews automatically and can be cancelled anytime in your iOS settings. GOOD TO KNOW 4VIDA SYNC is a wellness product for relaxing, focusing and winding down — not a medical device and no substitute for medical advice. Please note the in-app notice if you have epilepsy, wear a pacemaker, or are pregnant. Support: https://4vida.eu/en/support Privacy: https://4vida.eu/en/datenschutz Terms of Use (EULA): https://4vida.eu/en/agb No optimization. A return to your natural rhythm.
Screenshots
Verdict
The clearest difference is in-app purchases: Altara at none against 4VIDA SYNC's 2. Altara also leads on iOS requirement (16.1 vs 26.2). 4VIDA SYNC's advantage is device support. On price 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. 4VIDA SYNC sells 2 in-app purchases, starting at $2.99 per month. Altara asks for nothing beyond the download.
| Parameter | Altara | 4VIDA SYNC |
|---|---|---|
| Price | Free | Free |
| Update frequency | — | Every 3 weeks |
| Ads | — | No |
| In-app purchases | No — better | Yes |
| Devices | — | iPhone, iPad, Apple Watch — better |
| Requires iOS | 16.1 — better | 26.2 |
| Further details — not scored | ||
| Size | 40 MB | 334 MB |
| Age rating | 17+ | 4+ |
| Developer | Maria Toloza | Fabian Mahnke |
In-app purchases
Altara
No in-app purchases
4VIDA SYNC
- 4Vida Sync Plus (Monatlich)$2.991 Month
- 4Vida Sync Plus (Jährlich)$24.991 Year









