Endless A vs Helix Tuner
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Endless A
Easily generate a consistent A-440 pitch for tuning instruments. Select from various instrument sounds to play the reference tone endlessly until you tap to stop. Ideal for musicians needing a reliable tuning reference.
- Endless A-440 pitch generation
- Multiple instrument sound options
- Simple tap-to-play interface
- Reference tone for tuning
- Piano, violin, french horn, sine wave sounds
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The fastest way to play an A-440 on an iPhone! Sometimes you just want a single pitch that everyone can tune to but your tuning fork is just too quiet. Endless A440 is a simple tuner that endlessly plays A-440. Just tap an instrument to start playing A-440 on that instrument and tap it again to stop. Endless A440 includes piano, violin, french horn, and sine wave sounds.
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: Endless A at Free against Helix Tuner's $15.99. Endless A also leads on update cadence (weekly vs every 4 months) and review sentiment (100% vs 90%). Helix Tuner's advantage is ratings volume (164 vs 2) and rating (4.8 vs 4.5). On ads, in-app purchases, monetization model 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
Endless A is free to download; Helix Tuner costs $15.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Helix Tuner holds the better App Store score, 4.8 against 4.5. That said, the two scores are not equally well evidenced: Helix Tuner has 164 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 100% of Endless A's written reviews are positive against 90% of Helix Tuner's, so the app with the better star average is not the one people write more warmly about.
Endless A ships an update weekly, Helix Tuner every 4 months. The most recent releases landed on September 21, 2026 and September 24, 2026 respectively.
| Parameter | Endless A | Helix Tuner |
|---|---|---|
| Price | Free — better | $15.99 |
| Rating | 4.5 (2 ratings) | 4.8 (164 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 89.7% of reviews |
| Number of ratings | 2 | 164 — better |
| Update frequency | Weekly — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Best chart rank | — | #193 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 11.0 |
| Further details — not scored | ||
| Size | 7 MB | 198 MB |
| Age rating | 4+ | 4+ |
| Developer | Nathan Fennel | Blue Mangoo Consulting Company Limited |
Customer experience
Endless A
Helix Tuner
In-app purchases
Endless A
No in-app purchases
Helix Tuner
No in-app purchases









