A vs Endless A
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
A
Easily generate a tuning tone with a single tap. Enhance convenience by setting up Siri Shortcuts for quick access, even adding them to your Home Screen or widgets. Adjust the frequency to your needs and enjoy a fuss-free tuning experience.
- Single-tap tone generation
- Adjustable frequency (435–445 Hz)
- Siri Shortcut integration
- Home Screen and widget shortcuts
- iPad Slide Over compatibility
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A–440: Pro Tuner Tuning Fork puts an A in your ear. The rest is up to you. One tap is all it takes. A–440: Pro Tuner Tuning Fork gives you - ease of use - confidence - reliability - flexibility - customization - Siri integration "If you know how to tune your instrument, this should be all you need." A 14-day Trial is available. It is activated at no-cost and obligation-free. After the trial expires the sounding of an A is disabled until a license is purchased. Download A–440: Pro Tuner Tuning Fork now and experience the ease and simplicity of tuning.
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: A at 4.4 against Endless A's 3.5. A also leads on ratings volume (185 vs 4) and review sentiment (61% vs 50%). Endless A's advantage is in-app purchases (none vs 4) and update cadence (every 2 weeks vs every 6 weeks). On price, ads, 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
Both are free to download. A sells 4 one-off in-app purchases. Endless A asks for nothing beyond the download.
A holds the better App Store score, 4.4 against 3.5. That said, the two scores are not equally well evidenced: A has 185 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 61% of A's written reviews are positive against 50% of Endless A's.
A ships an update every 6 weeks, Endless A every 2 weeks. The most recent releases landed on October 23, 2026 and October 29, 2026 respectively.
| Parameter | A | Endless A |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (185 ratings) — better | 3.5 (4 ratings) |
| Positive reviews | 60.9% of reviews — better | 50.0% of reviews |
| Number of ratings | 185 — better | 4 |
| Update frequency | Every 6 weeks | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.5 | 17.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Paul Richardson | Nathan Fennel |
Customer experience
A
Endless A
In-app purchases
A
- 14-day TrialFree
- A–440 Standard$2.99
- Upgrade to A–440 Premium$2.99
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- A–440 Premium$4.99
Endless A
No in-app purchases
