onsA440 vs Endless A
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
onsA440
This simple tuning fork app generates a musical tone with a shake or tap. It stops the sound with another tap, making it a straightforward tool for musicians.
- Shake gesture activation
- Tap gesture activation
- Simple sound generation
- For musicians
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This is a very simple tuning fork application. It begins to sound it in the shake gesture or the tap. And, the sound stops if the tap is done. For all musicians.
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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A concert A, whenever you need one. Endless A-440 plays a sustained 440 Hz reference tone for tuning instruments. Choose piano, violin, French horn, or a pure sine wave. Tap an instrument to start or stop, or tap another to switch sounds. Hold an instrument to play until you release it. • Four original bundled reference sounds • Animated instruments during playback • Light and dark appearances • Modern and classic designs • Native adaptive controls on iPhone Duo • Works offline, with no account, ads, or microphone access This is a reference-tone player. It does not listen to your instrument or measure its pitch.
Screenshots
Verdict
The clearest difference is rating: Endless A at 3.5 against onsA440's 2.0. Endless A also leads on update cadence (every 2 weeks vs every 5 months). onsA440's advantage is review sentiment (73% vs 50%) and iOS requirement (12.0 vs 17.0). On price, ratings volume, ads and in-app purchases 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.
Endless A holds the better App Store score, 3.5 against 2.0. Both are backed by a comparable volume of ratings — 4 and 4 respectively. Written reviews complicate that: 73% of onsA440's written reviews are positive against 50% of Endless A's, so the app with the better star average is not the one people write more warmly about.
onsA440 ships an update every 5 months, Endless A every 2 weeks. Both last shipped on November 1, 2026.
| Parameter | onsA440 | Endless A |
|---|---|---|
| Price | Free | Free |
| Rating | 2.0 (4 ratings) | 3.5 (4 ratings) — better |
| Positive reviews | 73.3% of reviews — better | 50.0% of reviews |
| Number of ratings | 4 | 4 |
| Update frequency | Every 5 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 12.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 5 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Groov-in. | Nathan Fennel |
Customer experience
onsA440
Endless A
In-app purchases
onsA440
No in-app purchases
Endless A
No in-app purchases
