iDiapason vs Viola Tuner Basic
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
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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.
Viola Tuner Basic
Instantly tune your viola with precision and ease. This app offers ultra-accurate frequency display, adjustable A4 temperaments, and intuitive LED guidance. It's perfect for musicians of all levels, from beginners to professionals.
- Ultra-accurate frequency display (Hz)
- Adjustable A4 temperaments (392Hz–466Hz)
- LED tuning indicator
- Tuned string lights up on screen
- High sensitivity and fast response
- Tuning fork (IAP)
- Advanced settings (IAP)
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Tune your viola instantly with precision and ease! Ideal for beginners, students, and professional players. • Ultra-accurate — displays exact frequency in Hz • A4 temperaments from 392Hz–466Hz • Includes tuning fork & advanced settings (IAP) • High sensitivity and fast response • LED tuning indicator for intuitive guidance • Tuned string lights up on screen • Universal app for iPhone & iPad Please allow microphone access: Settings > Privacy > Microphone. Questions or ideas? feedback@daikyoujulabs.com
Screenshots
Verdict
The clearest difference is rating: Viola Tuner Basic at 4.1 against iDiapason's 1.0. Viola Tuner Basic also leads on review sentiment (38% vs 0%) and update cadence (every 2 weeks vs every 202 months). iDiapason's advantage is in-app purchases (none vs 5) and ads (none vs shown). On price, 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. Viola Tuner Basic sells 5 one-off in-app purchases. iDiapason asks for nothing beyond the download.
Viola Tuner Basic holds the better App Store score, 4.1 against 1.0. That said, the two scores are not equally well evidenced: Viola Tuner Basic has 194 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 38% of Viola Tuner Basic's.
iDiapason ships an update every 202 months, Viola Tuner Basic every 2 weeks. The most recent releases landed on June 10, 2026 and September 21, 2026 respectively.
| Parameter | iDiapason | Viola Tuner Basic |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) | 4.1 (194 ratings) — better |
| Positive reviews | 0.0% of reviews | 37.5% of reviews — better |
| Number of ratings | 1 | 194 — better |
| Update frequency | Every 202 months | Every 2 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.6 | 15.6 — better |
| Further details — not scored | ||
| Size | 3 MB | 12 MB |
| Age rating | 17+ | 4+ |
| Developer | Punctus Multimedia | Pedro Daniel Macalupu Cumpen |
Customer experience
iDiapason
Viola Tuner Basic
In-app purchases
iDiapason
No in-app purchases
Viola Tuner Basic
- Remove ads$3.99
- A4 Calibrations 392Hz to 466Hz$3.99
- Settings$3.99
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- Tuning Fork$3.99
- Metronome$3.99
Questions
Is iDiapason free?
Is Viola Tuner Basic free?
Which has better reviews, iDiapason or Viola Tuner Basic?
Do iDiapason or Viola Tuner Basic have ads?
Which is updated more often, iDiapason or Viola Tuner Basic?
Other comparisons
