iDiapason vs Tuning Fork Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iDiapason
This app provides a precise digital tuning fork for musicians and choir directors. It offers a clean interface with reference pitches and a unique shake-to-play gesture, delivering an authentic and distraction-free tuning experience.
- Reference pitches (435-444 Hz)
- Real recorded tuning fork sound
- Shake-to-play interaction
- Smooth audio fade-out
- Visual feedback animation
- Minimalist design
Read full descriptionHide full description
iDiapason is a refined digital tuning fork designed for choir directors, singers and musicians who require precision and simplicity. With a clean and distraction-free interface, the app provides an immediate reference pitch activated by a natural shake gesture — just like striking a real tuning fork. Features: • Reference pitches: 440 Hz, 441 Hz, 442 Hz, 444 Hz. 435 Hz and 432 Hz • Real recorded tuning fork sound • Shake-to-play interaction • Smooth audio fade-out • Visual feedback animation • Optimized for modern iPhone devices iDiapason is ideal for: • Choir rehearsals • Vocal warm-ups • A cappella groups • Music lessons • Instrument tuning reference Built for reliability and clarity, iDiapason delivers an authentic tuning experience in a minimal and elegant design. No ads. No distractions. Just pitch.
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
Read full descriptionHide full description
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: iDiapason at Free against Tuning Fork Pro's $14.99. iDiapason also leads on in-app purchases (none vs 2) and ads (none vs shown). Tuning Fork Pro's advantage is rating (4.3 vs 1.0) and review sentiment (42% vs 0%). On 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
iDiapason is free to download; Tuning Fork Pro costs $14.99 up front. Tuning Fork Pro sells 2 one-off in-app purchases. iDiapason asks for nothing beyond the download.
Tuning Fork Pro holds the better App Store score, 4.3 against 1.0. That said, the two scores are not equally well evidenced: Tuning Fork Pro has 35 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of iDiapason's written reviews are positive against 42% of Tuning Fork Pro's.
iDiapason ships an update every 202 months, Tuning Fork Pro every 2 weeks. The most recent releases landed on June 10, 2026 and September 10, 2026 respectively.
| Parameter | iDiapason | Tuning Fork Pro |
|---|---|---|
| Price | Free — better | $14.99 |
| Rating | 1.0 (1 ratings) | 4.3 (35 ratings) — better |
| Positive reviews | 0.0% of reviews | 41.7% of reviews — better |
| Number of ratings | 1 | 35 — better |
| Update frequency | Every 202 months | Every 2 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.6 | 15.6 — better |
| Further details — not scored | ||
| Size | 3 MB | 11 MB |
| Age rating | 17+ | 4+ |
| Developer | Punctus Multimedia | Pedro Daniel Macalupu Cumpen |
Customer experience
iDiapason
Tuning Fork Pro
In-app purchases
iDiapason
No in-app purchases
Tuning Fork Pro
- Remove ads$1.99
- A4 Calibration & Harmonics$1.99
