Frequency Generator vs Decy
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Frequency Generator
Generate precise audio tones for sleep, focus, and relaxation. Explore a wide frequency range, shape waveforms, and access presets like Solfeggio frequencies. An optional Pro upgrade unlocks all features.
- Wide frequency range (1 Hz - 22,000 Hz)
- Multiple waveforms (sine, square, sawtooth, triangle)
- Background audio playback
- Solfeggio frequencies and musical notes
- Binaural beats and isochronic tones
- Saved and pinned tone presets
- Lock-screen and Control Center controls
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Frequency Generator turns your iPhone into a precise, studio-clean tone source — for sleep, focus, relaxation, and sound exploration. Dial in any frequency from a deep 1 Hz rumble to a 22,000 Hz shimmer, shape its character, and press play. WIND DOWN AND SLEEP Mask traffic, chatter, and a restless mind with smooth white, pink, or brown noise. Start it playing, lock your phone, and let it run all night in the background. FIND YOUR FOCUS Drop into deep work with binaural beats and isochronic tones, or let steady noise blur out distractions around you. Made for studying, writing, and long concentration sessions. RELAX, MEDITATE, RESTORE Play the tones people reach for to unwind — including 432 Hz, 528 Hz, and the full set of Solfeggio frequencies — as a calm backdrop for meditation, breathwork, or simply slowing down. PLAY ANY NOTE Sound any pitch across nine octaves (C0–B8) as a clean reference tone, and set your concert pitch anywhere from 432 to 446 Hz. Ideal for tuning by ear, training your ear to intervals, or checking a note on the fly. EXPLORE THE FULL SPECTRUM Sweep all the way up to 22 kHz to hear the high and ultrasonic frequencies your ears, headphones, and speakers can reproduce. Shape the timbre with sine, square, sawtooth, or triangle waveforms. PRECISE, EFFORTLESS CONTROL Set an exact frequency down to the hertz, fine-tune it on a smooth slider, and switch sounds instantly. No clutter, no setup — just the tone you want, the moment you want it. PICK UP WHERE YOU LEFT OFF Every tone you play is saved to Recents. Pin your favorites, give them names, and replay any setup with a single tap. KEEPS PLAYING Full background audio with lock-screen and Control Center controls, so your sound stays with you while you get on with everything else. Frequency Generator is free to use, with an optional Pro upgrade that unlocks every waveform and noise color, binaural beats and isochronic tones, and the Solfeggio and musical-note presets. Privacy Policy: https://frequency-analyzer.com/privacy-policy-frequency-generator/ Terms of Use: https://frequency-analyzer.com/terms-and-conditions-frequency-generator/
Decy
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How old are your ears? Find out with Decy. Decy is a precision decibel meter and hearing health companion. Measure the sound around you in real time, discover your hearing age with our viral test, and explore how loud your city really is on the community noise map. HEARING AGE TEST Take the 2-minute frequency test and find out how old your ears really are. Share your result card with friends and compare — can they hear what you hear? REAL-TIME DECIBEL METER Watch sound levels update live on a clean, precise gauge. A-weighted and C-weighted measurements with LAeq, LCpeak, and TWA metrics — the same standards professionals use. ALL-DAY NOISE MONITORING Start a session in the morning and let Decy track your workplace noise exposure all day, even in the background. NIOSH-based dose tracking tells you when your ears need a break. COMMUNITY NOISE MAP See real noise levels pinned by users around the world. Drop your own measurements on the map and help build the world's living sound atlas. HEARING HEALTH TRACKING Get a daily hearing health score based on your actual noise exposure. Review your 30-day history and understand your habits. AI TREND ANALYSIS Let AI analyze your exposure patterns and hearing test results, then give you personalized insights and recommendations — updated daily. PDF HEALTH REPORTS Export professional hearing health reports to share with your doctor or keep for your records. WIDGETS & ALERTS Add the home screen widget for at-a-glance sound levels. Set threshold alerts so you know the moment your environment gets too loud. WHY DECY? - Audio is never recorded — sound is measured, not stored - No account required, no personal data collected - Noise map contributions are fully anonymous - Free core features, Premium unlocks the full experience PREMIUM Unlock the Hearing Age Test results, Noise Map, AI analysis, PDF reports, unlimited history, and detailed widgets with a Weekly or Annual subscription. Subscriptions auto-renew until canceled. Cancel anytime in your App Store settings. Terms of Use: https://codcy.com/terms-of-use-decibel-meter-noise-map/ Privacy Policy: https://codcy.com/privacy-policy-decibel-meter-noise-map/ Your ears will thank you. Download Decy today.
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Verdict
Frequency Generator and Decy are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. Frequency Generator sells 2 in-app purchases, starting at $4.99 per 7 days and Decy sells 3 in-app purchases, starting at $9.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Frequency Generator ships an update every 3 weeks, Decy every 5 weeks. The most recent releases landed on November 8, 2026 and November 5, 2026 respectively.
| Parameter | Frequency Generator | Decy |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (24 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 24 — better | — |
| Update frequency | Every 3 weeks — better | Every 5 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.3 — better | 18.6 |
| Further details — not scored | ||
| Size | 41 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | Moonbush Games & Utilities App GmbH | YAVUZ BAS |
In-app purchases
Frequency Generator
- Pro Weekly$4.997 Days
- Pro Yearly7 Days trial$29.991 Year
Decy
- Weekly$9.997 Days
- Premium Monthly$14.991 Month
- Premium Yearly$49.991 Year
Questions
Is Frequency Generator free?
Is Decy free?
Do Frequency Generator or Decy have ads?
Which is updated more often, Frequency Generator or Decy?
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