# Frequency Analyzer

> Fundamental frequency measurement: error less than 0.04%. Doppler Effect

Canonical page: [https://chrome-stats.com/d/fqan.frequencyanalyzer](https://chrome-stats.com/d/fqan.frequencyanalyzer)

## Overview

- **ID:** `fqan.frequencyanalyzer`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** José Antonio Gómez Tejedor
- **Category:** MUSIC\_AND\_AUDIO
- **Downloads:** 155,381
- **Rating:** 2.50 / 5 (420 ratings)
- **Version:** 1.0.8
- **Last updated:** 2021-12-20
- **First published:** 2013-04-10
- **Publisher country:** ES
- **Data as of:** 2026-10-02
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=fqan.frequencyanalyzer)
- **Privacy policy:** [https://docs.google.com/document/d/1y8NHXf-VZQ3MwSGQ1zFb0jITjY5-3ckleu7CuLaywm0/edit?usp=sharing](https://docs.google.com/document/d/1y8NHXf-VZQ3MwSGQ1zFb0jITjY5-3ckleu7CuLaywm0/edit?usp=sharing)

## Description

Frequency Analyzer is a high-precision tool designed to measure the fundamental frequency of sounds with an error margin of less than 0.04%. It provides real-time plotting of frequency versus time, assisting users in accurately tuning musical instruments and conducting sound analysis.

Moreover, the app supports measuring the acoustic Doppler effect, based on established physics research, making it invaluable for educational and scientific applications. For detailed insights and validation, refer to the research articles by J.A. Gómez-Tejedor et al., showcasing the app's implementation and scientific relevance.

## Rankings

- #181,415 — Overall

## Review summary

Overall, Frequency Analyzer is easy to use and can be useful for basic frequency measurements in engineering contexts, especially with external gear. However, consistency is a major problem: readings are often inaccurate or vary between trials, and it can misidentify fundamentals (esp. voiced or transient sounds). Visualization is frequently missing or non-functional (no graphs/plotting). Stability is another issue—crashes or not opening on various devices/Android versions. Users also want configurable sampling (interval, smoothing) and a broader/clearer frequency range. When it works, accuracy can be high within certain ranges.

### Pros

- Easy to use.
- Useful for engineering frequency measurements and identifying pure-tone frequencies.
- Helpful when using external gear like signal generators or speaker testing.
- When accurate, high precision in certain frequency ranges.
- Encourages taking multiple readings to obtain a repeatable value.

### Cons

- Inaccurate or inconsistent readings; misidentification of fundamentals (e.g., confusing peak for fundamental) and octave shifts for voices.
- Visualization/graphing is often missing or non-functional (no graphs, plotting options, or graphs not shown).
- Stability issues: crashes or the app not opening on multiple devices/Android versions.
- Lacks configurable sampling controls (sample interval, smoothing) and other measurement settings.
- Limited frequency range or occasional misses at higher frequencies.

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Source: [Chrome-Stats](https://chrome-stats.com/d/fqan.frequencyanalyzer)