Free Tuner.io Alternative
Tuner.io is a chromatic tuner that uses your microphone to check instrument pitch. If you need a note frequency reference for music production without a microphone, BeatKey Note Frequency Calculator is the dedicated free tool.
The Core Difference
Tuner.io (Chromatic Tuner)
Listens to your instrument via microphone and tells you whether each note is sharp or flat. Designed for real-time instrument tuning. Does not show a note frequency chart and does not integrate with production workflows.
BeatKey Note Frequency Calculator
A frequency reference lookup tool. Shows the Hz value for any of 128 MIDI notes, with MIDI numbers and enharmonic names. Built for producers who need to match sample pitches, tune 808s, or find note frequencies in a DAW. No microphone required.
Feature Comparison
| Feature | BeatKey Note Freq | Tuner.io |
|---|---|---|
| Price | Free | Free |
| Account required | No | No |
| Primary purpose | Note Hz reference lookup | Instrument tuning via microphone |
| Microphone required | No | Yes |
| Full note frequency chart | Yes (128 notes) | No |
| MIDI note numbers | Yes | No |
| 808 tuning workflow | Yes (dedicated guide) | No |
| EQ frequency reference | Yes | No |
| Works without audio hardware | Yes | No |
| BPM + key detection link | Yes | No |
| Dark theme | Yes | Varies |
| Offline capable | Yes (cached) | Partially |
When You Need a Frequency Reference, Not a Tuner
Tuning an 808 in your DAW
You need to tune an 808 bass to match your track key. A chromatic tuner cannot tune a sample in a DAW. BeatKey shows you the exact Hz for the target note (e.g., 55 Hz for A1) so you can set the sample pitch numerically. The 808 Tuning Guide covers this step by step.
Setting EQ frequencies musically
You want to boost the fundamental frequency of a bass guitar. BeatKey shows you that E2 = 82.41 Hz, so you can set your EQ band to 82 Hz precisely. Chromatic tuners do not give you this reference in a DAW-friendly format.
Matching sample pitches
You have a vocal sample that sounds like it is around G3. BeatKey shows G3 = 196 Hz. You can run a spectrum analyzer, find the peak, and pitch-shift the sample until the fundamental hits 196 Hz. Microphone tuners cannot help with pre-recorded samples.
No microphone needed
BeatKey Note Frequency Calculator works on any device without microphone permission. Useful on tablets, locked-down computers, or any situation where browser microphone access is unavailable or undesirable.
Open Note Frequency Calculator Free
128 notes, Hz values, MIDI numbers. No microphone, no account.
Open Note Frequency Calculator