U1 vs Deep Decibels
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
U1
This mindfulness app offers a unique haptic meditation experience, allowing users to meditate for any duration without timers. It prioritizes privacy with no registration or ads, and seamlessly integrates mindful minutes into Apple Health.
- Haptic meditation experience
- Unlimited meditation duration
- No registration required
- No advertisements
- Apple Health integration
- Privacy-focused design
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U1-MA is a mindfulness app designed to ease your meditation routine. It doesn't ask you to set up a timer. You can meditate for as long as you want. Instead of field recordings or spiritual sounds, it uses haptics that gives you a tactile experience comparable to thumbing through a loop of prayer beads. The app is made with your privacy in mind. No registration. No ads. Mindful minutes are recorded directly to Apple Health. There is no subscription or in-app purchases.
Deep Decibels
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Deep Decibels is your sound laboratory to focus, sleep, meditate, or calm your pets and babies. Combine lyric-free tracks (lo-fi, jazz, classical, and more) with binaural, isochronic, and monaural beats, plus ambient sounds like rain, crackling fire, or birdsong. All at once, blended into the perfect mix for your mood. Why you’ll love it • Create your own mix Drag and drop multiple audio layers — adjust volume and balance individually — and save your personal sound recipes. • Scientifically designed sounds Binaural and isochronic tones based on alpha, beta, theta, delta, and gamma frequencies for focus, relaxation, or deep sleep. • Curated library Ready-made playlists for studying, meditating, working, easing anxiety, or keeping your furry friend calm when home alone. • Share your creations Publish your mixes (optional) and discover favorites from the community. Premium Plan (Deep Decibels Premium) • Ad-free audio • Create playlists and custom binaural, isochronic, and monaural beats • Access to premium sounds Notice Deep Decibels is a wellness tool and is not a substitute for professional medical advice. If you have health concerns, please consult a specialist. Download Deep Decibels today and design your sound sanctuary: distraction-free study, deep sleep, and moments of calm — all in one app. Privacy Policy: https://deepdecibels.com/privacy/ Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: U1 at none against Deep Decibels's 2. U1 also leads on iOS requirement (15.0 vs 17.6). On price, update cadence, ads and device support 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. Deep Decibels sells 2 in-app purchases, starting at $2.99 per month. U1 asks for nothing beyond the download.
Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on November 3, 2026 and November 8, 2026 respectively.
| Parameter | U1 | Deep Decibels |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 1 MB | 109 MB |
| Age rating | 4+ | 17+ |
| Developer | Dima Koskin | Alejandro Cerrillo Gutierrez |
In-app purchases
U1
No in-app purchases
Deep Decibels
- Premium Access1 Month trial$2.991 Month
- Premium Access1 Year trial$19.991 Year
