Comparison

Frequency vs ZDC

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

Head to head
About

Frequency

This app offers science-inspired sound therapy to promote natural healing and restore balance to your mind, body, and brain. It utilizes specific frequencies to aid in sleep, reduce pain, and enhance mental clarity for a holistic wellness journey.

Highlights
  • Full body healing & DNA repair
  • Restorative sleep support
  • Gentle relief for body pain
  • Emotional healing and clarity
  • High-fidelity healing frequencies
  • Transform any space into a sanctuary
Features
Read full description

Frequency Healing Sounds: Whole Body Recovery Research-backed healing frequency sound therapy for pain relief, deep sleep, and calm. You sleep, but wake up stiff. You rest, but still feel tired. You manage the aches, but never truly recover. That is surface rest, not real recovery. Pure healing frequency sound therapy guides your body deeper, easing pain and quieting the mind. When joint discomfort, shallow sleep, and tension start to feel like just part of aging, you can still change how you feel. Wake up less stiff. Sleep more deeply. Feel calm, rested, and like yourself again. The Science of Sound Sound is one of the most natural, non-invasive ways to support the body. A growing field of neuroscience research links sound and vibration to the nervous system's relaxation response, exploring how steady tones can support stress modulation, calm, and deeper rest. Studies of sound-based interventions report reductions in everyday stress and improved relaxation in adults, and sound therapy is increasingly accepted as a gentle, drug-free complement to wellbeing. This science-informed approach guides every session, helping you move from tension toward deep rest without medication and without anything to learn. Our library is built around eight core healing frequencies, each selected for a unique felt benefit. 174 Hz supports the release of physical tension and helps ease areas of chronic discomfort. 285 Hz is a grounding tone for body recovery. 396 Hz helps quiet repetitive worry. 432 Hz is the go-to frequency for deep sleep, helping you fall asleep faster and stay asleep longer. 528 Hz supports balance and gentle renewal. 639 Hz encourages emotional openness and warmth. 741 Hz helps clear mental noise. 852 Hz is a quiet, centering tone for stillness and peace. From Shallow Sleep to Deep Rest Deep sleep is where recovery begins. Our sleep-focused sessions guide you from falling asleep through staying asleep to natural awakening, so you wake up feeling like your body actually rested. Real Comfort for Tension and Stiffness Morning spinal stiffness, tight shoulders, and daily aches are often signs that your body never fully relaxed. The 174 Hz comfort sessions are designed to support physical ease and help movement return. Emotional Calm and Inner Clarity When the body rests deeply, the mind follows. Users describe feeling more settled, less reactive, and more like themselves again. Not excited. Just grounded. Whole Body Recovery(mind,body,soul) It is not one isolated fix. It is your sleep, comfort, mood, and energy all moving in a better direction together. This is not meditation. This is precision frequency healing. There are no binaural beats, no meditation scripts, and no background music fighting for your attention. Every session is a single, clean, sustained tone, carefully tuned and free of hidden layers, designed to support comfort, calm, and deep sleep. A Library That Grows With You With hundreds of pure healing frequency sessions, you will never run out of options. Explore by need, by frequency, or dive into curated collections like Deep Sleep, Gentle Pain Relief, and Morning Calm. Download your favorites for offline listening, follow structured 14-day protocols, and track your listening progress over time. Move at Your Own Pace No forced schedules. Body hurts today? Choose pain relief. Cannot sleep tonight? Choose deep sleep. You stay in complete control. Choose the plan that works for you. Annual access or a one-time lifetime purchase. No automatic renewal and no locked-in subscriptions. Your body does not need more willpower. It needs real recovery. Download Frequency Healing Sounds, choose one tone, and press play tonight. Feel the difference a single frequency can make. Privacy Policy: https://site.unexplainablestore.cn/html/fre250422/Privacy_Policy.html Terms of Use: https://site.unexplainablestore.cn/html/fre250422/Terms_of_Use.html Questions or feedback? support@imoblife.net

About

ZDC

Read full description

ZDC makes it easy to stay consistent and connected with your fitness routine. Use the app to seamlessly book classes, training sessions, and services, all in just a few taps. View your upcoming schedule, check availability in real time, and manage your bookings anytime, anywhere. Stay organized with instant confirmations, reminders, and access to your personalized training calendar. Whether you're planning your week, reserving a spot, or keeping track of your progress, the ZDC app keeps everything simple and streamlined. Take control of your fitness journey with an app designed to support your goals, your schedule, and your success.

Screenshots

Frequency4 screens
ZDC4 screens

Verdict

The call

The clearest difference is in-app purchases: ZDC at none against Frequency's 10. ZDC also leads on iOS requirement (13.0.0 vs 16). Frequency'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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Frequency sells 10 in-app purchases, starting at $7.99 per month. ZDC asks for nothing beyond the download.

Scorecard3 real differences · 7 level
Frequency versus ZDC: the parameters behind the verdict, then further details
ParameterFrequencyZDC
PriceFreeFree
Rating4.7 (2.4K ratings) — better—
Positive reviews84.6% of reviews—
Number of ratings2.4K — better—
Update frequencyEvery 2 weeks—
AdsNo—
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — better—
Requires iOS1613.0.0 — better
Further details — not scored
Size218 MB28 MB
Age rating4+4+
DeveloperBrainPower IncZero Doubt Club Cleveland East LLC

Bugs and requests

Frequency

Reported bugs

3 issues
  • App crashing or freezing
  • Playback stopping when device goes to sleep
  • Inconsistent volume and sound quality

Requested features

4 requests
  • Ability to customize frequency settings
  • Option to purchase individual frequencies
  • Improved search and organization of content
  • Ability to play in the background while device is locked

ZDC

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

Frequency

Subscriptions9
  • Daily Monthly Subscription$7.991 Month
  • Auto Renew Special Sale Year1 Year trial$24.991 Year
  • New User Yearly Option$29.991 Year
Show 6 more
  • Trial for new in guide page3 Days trial$29.991 Year
  • Frequency Special Subscription$29.991 Year
  • Daily Annual Subscription7 Days trial$34.991 Year
  • Trial offer for new7 Days trial$34.991 Year
  • Yearly Subscription Trial7 Days trial$35.991 Year
  • Yearly Subscription with Trial7 Days trial$39.991 Year
One-time1
  • Unlock 2 Years VIP$29.99
None

ZDC

No in-app purchases

Questions

Is Frequency free?
Frequency is free to download, with in-app purchases available.
Is ZDC free?
ZDC is free to download, with no in-app purchases.

Other comparisons