12Chord vs Helix Tuner
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
12Chord
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Do you ever have trouble finding guitar chords ? Sometimes you take too much time to get guitar chords. But this app will help you simply just two clicks to get Guitar Chord !! Step 1 : Choose root note Step 2 : Choose chord scales Step 3 : The guitar chord is then showed up !!
Helix Tuner
This app offers a novel approach to instrument tuning by visualizing sound as an interference pattern. It avoids pitch detection, instead creating an optical illusion of motion that indicates sharpness or flatness, appearing stable when in tune. This method is highly resistant to background noise and harmonics, providing clear tuning information even in noisy environments.
- Visual interference pattern tuning
- No pitch detection
- Optical illusion of motion for tuning
- Stable visualization when in tune
- Resistant to background noise
- Useful in noisy environments
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Helix Tuner is a completely new way to tune your instrument. Unlike all other tuning apps, it does not detect your pitch at all. Instead, it combines the sound coming into the microphone with the desired tuning pitch to create a beautiful interference pattern on the screen. The interaction between your sound and the reference pitch creates an optical illusion of motion when your note is sharp or flat, and it appears stable when you're in tune. If you are tired of digital tuners that jump around erratically, have slow or delayed response to changes in your tuning, or in general just don't give you good tuning information, then Helix Tuner is the one you are looking for. When you manually select the tuning note, as opposed to letting the app detect it automatically, Helix Tuner is extremely resistant to background noise and higher string harmonics that confuse other tuners, causing them to jump around to higher notes and give wrong tuning information. Because the visualization system naturally responds more clearly to sounds near the selected tuning pitch, it is useful even when other musicians are playing nearby.
Screenshots
Verdict
The clearest difference is price: 12Chord at Free against Helix Tuner's $15.99. Helix Tuner's advantage is update cadence (every 4 months vs every 48 months). On ads, in-app purchases, device support and iOS requirement 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
12Chord is free to download; Helix Tuner costs $15.99 up front. Neither carries in-app purchases, so what you see is what you pay.
12Chord ships an update every 48 months, Helix Tuner every 4 months. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.
| Parameter | 12Chord | Helix Tuner |
|---|---|---|
| Price | Free — better | $15.99 |
| Rating | — | 4.8 (166 ratings) — better |
| Positive reviews | — | 89.7% of reviews |
| Number of ratings | — | 166 — better |
| Update frequency | Every 48 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 | 11.0 |
| Further details — not scored | ||
| Size | 28 MB | 198 MB |
| Age rating | 4+ | 4+ |
| Developer | Panus Tantikornphan | Blue Mangoo Consulting Company Limited |
In-app purchases
12Chord
No in-app purchases
Helix Tuner
No in-app purchases









