Frequency Counter+ Hz FFT vs Frequency Generator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Frequency Counter+ Hz FFT
This app transforms your iPhone into a powerful audio analyzer. It offers four distinct modes to measure sound frequencies, tune instruments, analyze motor speeds, and check mains stability. Advanced features include measurement history, comparison tools, and CSV export.
- Dominant frequency measurement (Hz)
- Instrument tuning with note and pitch display
- Motor RPM analysis
- 50/60 Hz mains hum detection
- Measurement history and trend charts
- CSV export of measurements
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Frequency Counter+ turns your iPhone into a precise audio analyzer with four purpose-built modes. Measure the dominant frequency of any sound, tune an instrument, read motor RPM by ear, or check the stability of your 50/60 Hz mains. FOUR MODES • Music — instrument tuner showing note name (A4, F#5) and cents off pitch (A4=440 Hz). • Motor — RPM displayed first, with hints for 1500/1800/3000/3600 RPM standards. • Hum — 50/60 Hz mains lock with deviation in ±0.01 Hz. • Auto — Hz reading with closest musical note or mains harmonic shown live. WHAT'S NEW • Measurement History — every reading is auto-saved with a 7-day trend chart and insights like "+12% vs your 7-day average". • Notes & Favorites — add a note ("fridge", "room 1") and star to any saved reading. • Compare Mode — pick two saved measurements and view the difference side by side. • Calibration Offset — fine-tune your microphone in ±0.1 Hz steps. • Share Result — share your current frequency reading as an image. • CSV Export — share all your measurements as CSV for spreadsheets. CORE FEATURES • Precise dominant frequency measurement (Hz) • Large multimeter-style digital display • Automatic 50/60 Hz mains hum detection with lock indicator • Instant Hz-to-RPM conversion • Waveform and amplitude visualization • Microphone calibration FOR MUSICIANS · AUDIO ENGINEERS · ELECTRICIANS · MECHANICS · HVAC TECHS · INDUSTRIAL DIAGNOSTICS Available in 14 languages.
Frequency Generator
This app generates pure tones and binaural beats for focus, relaxation, or sleep. It also functions as a real-time sound analyzer, identifying musical notes and visualizing sound levels. Save and reuse your favorite settings with a clean, intuitive interface.
- Generate pure tones (1 Hz - 20,000 Hz)
- Create custom binaural beats
- Real-time sound frequency detection
- Identify musical notes
- Visualize sound levels
- Save and reuse presets
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Waves — A modern frequency generator, binaural beats creator, and real-time sound analyzer. Whether you’re tuning instruments, experimenting with tones, or exploring sound frequencies for focus and relaxation, Waves gives you precise control with a clean, immersive interface. Generate Pure Frequencies Create accurate tones from 1 Hz to 20,000 Hz * Sine, Square, and Triangle waveforms * Smooth real-time adjustments * High-quality audio output Binaural Beats Design custom binaural frequencies for different states: * Focus & concentration * Relaxation & calm * Sleep & deep rest Fine-tune left/right channels and beat differences with precision. Real-Time Frequency Detection Turn your device into a sound analyzer: * Detect live frequencies via microphone * Identify musical notes instantly * Visualize sound levels and signal intensity Save & Reuse Presets * Save your favorite tones and beats * Quickly access and organize presets * Mark favorites for easy access Designed for Simplicity * Minimal, distraction-free interface * Smooth animations and modern visuals * Built with performance and precision in mind Perfect for: * Musicians & producers * Sound engineers * Students & learners * Meditation & focus enthusiasts * Anyone curious about sound Waves turns your device into a powerful sound tool — simple, precise, and beautifully designed. Privacy Policy: https://frequencymetrics.com/privacy.html Terms & Conditions: https://frequencymetrics.com/terms.html
Screenshots
Verdict
The clearest difference is rating: Frequency Generator at 5.0 against Frequency Counter+ Hz FFT's 3.3. Frequency Generator also leads on ads (none vs shown) and monetization model (free vs ad-supported). Frequency Counter+ Hz FFT's advantage is ratings volume (6 vs 1). On price, update cadence, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Frequency Generator holds the better App Store score, 5.0 against 3.3. That said, the two scores are not equally well evidenced: Frequency Counter+ Hz FFT has 6 ratings behind it against 1, so its average is the more settled of the two.
Frequency Counter+ Hz FFT ships an update every 4 days, Frequency Generator every 6 days. The most recent releases landed on August 31, 2026 and September 16, 2026 respectively.
| Parameter | Frequency Counter+ Hz FFT | Frequency Generator |
|---|---|---|
| Price | Free | Free |
| Rating | 3.3 (6 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 6 — better | 1 |
| Update frequency | Every 4 days — better | Every 6 days |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 69 MB | 23 MB |
| Age rating | 17+ | 4+ |
| Developer | Kyu-Hee Jang | Dejan Atanasov |
Customer experience
Frequency Counter+ Hz FFT
Frequency Generator
In-app purchases
Frequency Counter+ Hz FFT
No in-app purchases
Frequency Generator
No in-app purchases
