Comparison

Interactive Singing Bowls vs Quell

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Interactive Singing Bowls

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Authentic Interactive Tibetan Singing Bowls • Real Sounds • Meditation Interactive Singing Bowls is a unique meditation and relaxation app based on authentic Tibetan singing bowls. Each bowl in the app is real: individually photographed and professionally recorded in a studio to capture its full sonic and vibrational richness. An ultra-realistic experience, interact with the bowls as you would in real life: • Strike the bowls with different tools • Make them sing by making a circular motion • Feel the full depth and resonance of the vibrations Multi-bowl mode, create your own harmonies: • Use 2 to 4 bowls simultaneously • Combine frequencies • Compose truly immersive soundscapes Relaxing ambient sounds, accompany your sessions with natural sounds: • Rain • Wind • Birds • etc. Ideal for promoting relaxation, meditation, or falling asleep. Tonal Journeys, enjoy ready-to-use immersive sessions: • Improved sleep • Deep meditation • Chakra balancing Each journey uses bowls selected for their specific frequencies. Discover Tibetan singing bowls, learn about: • Their origin • Their use • Their frequencies App available in: • French • English • Spanish • German Why choose this app? • 100% authentic bowls (studio recordings) • Realistic interactive experience • Premium sound quality • Ideal for meditation, relaxation, and sleep Terms of us : https://kostaquent.github.io/Interactive-singing-bowls/terms.html

About

Quell

Features
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Quell is a deep-focus app with one job: help you sit down and do one undivided thing. No streaks. No badges. No feed. You tap Begin, a calm arctic ring starts counting up, and a 40 Hz binaural beat plays underneath. When you are done, you end. That is the whole ritual. WHY 40 Hz 40 Hz is the gamma band — the brain rhythm tied to attention and memory, and the most-studied frequency in sound-based focus research. Quell generates it live: two pure tones, one slightly different in each ear, that your brain fuses into a single 40 Hz pulse. WHAT IT DOES - A 40 Hz binaural beat, generated live on your device. Two pure tones on a deep, warm carrier (130 Hz left, 170 Hz right). It needs stereo headphones to create the beat. - An optional coach voice. Short, grounded lines, spaced minutes apart, that nudge you back when your attention drifts. It is sports-psychology self-talk, not generic meditation, and it is a natural recorded voice, not a robotic one. - Optional music under the beat. Four moods of original, AI-generated tracks (lofi days, lofi night, global beats, ambient) that sit quietly beneath everything. Off by default. - A count-up timer. No fixed length, no pressure. The session lasts as long as you stay. THE SCIENCE, HONESTLY We lead with 40 Hz because the research is real — it is the gamma approach popularized on the Huberman Lab podcast. A 2022 meta-analysis found binaural beats gave a small but significant lift to attention and memory, and a 2025 study confirmed that a 40 Hz beat measurably entrains the brain while improving attention. But we will not oversell it: not every study agrees, and the effect varies from person to person. Treat the 40 Hz tone as a low-risk way to settle into deep work, not a guarantee. DESIGNED TO DISAPPEAR Quell is dark, still, and quiet on purpose. The only bright thing is the ring. It keeps playing while your screen is off, with controls on the lock screen, so you can put the phone down and work. PRIVATE BY DESIGN Everything runs on your device. No account, no sign-in, no tracking, no analytics, no servers. Your settings stay on your phone. FREE AND PAID The 40 Hz beat and the timer are free, forever. A single one-time purchase unlocks the music moods and the coach voice. Pay once, it is yours. No subscription. Quell. Quiet the noise.

Screenshots

Interactive Singing Bowls4 screens
Quell4 screens

Verdict

The call

The clearest difference is update cadence: Quell at daily against Interactive Singing Bowls's every 2 weeks. Interactive Singing Bowls's advantage is iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Interactive Singing Bowls sells 3 in-app purchases, starting at $1.99 per month and Quell sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Interactive Singing Bowls ships an update every 2 weeks, Quell daily. The most recent releases landed on October 10, 2026 and October 17, 2026 respectively.

Scorecard2 real differences · 4 level
Interactive Singing Bowls versus Quell: the parameters behind the verdict, then further details
ParameterInteractive Singing BowlsQuell
PriceFreeFree
Update frequencyEvery 2 weeksDaily — better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, iPod — betteriPhone, Mac
Requires iOS15.1 — better17.0
Further details — not scored
Size139 MB58 MB
Age rating4+4+
DeveloperQuentin JeandotOleksandr Pavlov

In-app purchases

3 purchases

Interactive Singing Bowls

Subscriptions2
  • Monthly premium$1.991 Month
  • Annual premium$22.991 Year
One-time1
  • Lifetime premium$34.99
1 purchases

Quell

One-time1
  • Quell Unlock$9.99

Questions

Is Interactive Singing Bowls free?
Interactive Singing Bowls is free to download, with in-app purchases available.
Is Quell free?
Quell is free to download, with in-app purchases available.
Do Interactive Singing Bowls or Quell have ads?
Neither Interactive Singing Bowls nor Quell shows ads.
Which is updated more often, Interactive Singing Bowls or Quell?
Interactive Singing Bowls ships an update every 2 weeks, and Quell daily. Most recently, Interactive Singing Bowls was updated on October 10, 2026 and Quell on October 17, 2026.

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