onsA440 vs Tuning Fork Pro
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.
Tuning Fork Pro
This app helps musicians tune their instruments by ear using precise tone generation. It offers a wide range of notes and calibration options with various waveform selections. The app is designed for ease of use and compatibility with external audio devices.
- Note generation from A1 to C7
- A4 Calibration (415Hz to 466Hz)
- Sine, Square, Triangle, Sawtooth waveforms
- Output volume control
- Precise tone emission algorithm
- External speaker compatibility
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Tune your musical instruments by ear with precision and ease! · Generate notes from A1 to C7 in 4 different waveforms · A4 Calibration from 415Hz to 466Hz · Sine, Square, Triangle and Sawtooth waveforms · Output volume setting · Instant load and most precise algorithm for tone emission. · Compatible with external speakers · 64-bit Universal app, works with iPhone, iPad and iPod touch!
Screenshots
Verdict
The clearest difference is price: onsA440 at Free against Tuning Fork Pro's $9.99. onsA440 also leads on in-app purchases (none vs 2) and ads (none vs shown). Tuning Fork Pro's advantage is rating (4.3 vs 2.3) and update cadence (every 2 weeks vs every 5 months). On 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
onsA440 is free to download; Tuning Fork Pro costs $9.99 up front. Tuning Fork Pro sells 2 one-off in-app purchases. onsA440 asks for nothing beyond the download.
Tuning Fork Pro holds the better App Store score, 4.3 against 2.3. That said, the two scores are not equally well evidenced: Tuning Fork Pro has 35 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 73% of onsA440's written reviews are positive against 42% of Tuning Fork Pro'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, Tuning Fork Pro every 2 weeks. The most recent releases landed on October 5, 2026 and October 11, 2026 respectively.
| Parameter | onsA440 | Tuning Fork Pro |
|---|---|---|
| Price | Free — better | $9.99 |
| Rating | 2.3 (3 ratings) | 4.3 (35 ratings) — better |
| Positive reviews | 73.3% of reviews — better | 41.7% of reviews |
| Number of ratings | 3 | 35 — better |
| Update frequency | Every 5 months | Every 2 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 5 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Groov-in. | Pedro Daniel Macalupu Cumpen |
Customer experience
onsA440
Tuning Fork Pro
In-app purchases
onsA440
No in-app purchases
Tuning Fork Pro
- Remove ads$1.99
- A4 Calibration & Harmonics$1.99
