# Viola Tuner Professional vs Endless A

The clearest difference is price: Endless A at Free against Viola Tuner Professional's $9.99. Endless A also leads on in-app purchases (none vs 2) and review sentiment (50% vs 22%). Viola Tuner Professional's advantage is rating (3.9 vs 3.5) and iOS requirement (15.6 vs 17.0). On ratings volume, ads and device support there is nothing between them.

Endless A is free to download; Viola Tuner Professional costs $9.99 up front. Viola Tuner Professional sells 2 one-off in-app purchases. Endless A asks for nothing beyond the download.

Viola Tuner Professional holds the better App Store score, 3.9 against 3.5. Both are backed by a comparable volume of ratings — 9 and 4 respectively. Written reviews complicate that: 22% of Viola Tuner Professional'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.

Viola Tuner Professional ships an update every 4 months, Endless A every 2 weeks. Both last shipped on November 1, 2026.

## The numbers

| Metric | Viola Tuner Professional | Endless A |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[3.9 (9 ratings)](https://appshunter.io/ios/app/viola-tuner-professional/id806811415/reviews)** | [3.5 (4 ratings)](https://appshunter.io/ios/app/endless-a-440/id971330737/reviews) |
| Number of ratings | **9** | 4 |
| Positive reviews | 22.2% of reviews | **50.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Monetization | Paid | **Free** |
| Size | 7 MB | 6 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Pedro Daniel Macalupu Cumpen](https://appshunter.io/developer/492172409) | [Nathan Fennel](https://appshunter.io/developer/968469779) |

## What reviewers say

### Viola Tuner Professional

[App page](https://appshunter.io/ios/app/viola-tuner-professional/id806811415)

This application provides precise and easy viola tuning with instant loading and high responsiveness. It features an intuitive interface with visual indicators and offers advanced settings and a tuning fork as in-app purchases. Suitable for musicians of all skill levels.

**Highlights:** Precise frequency display in Hz, Multiple calibration options for A string, Instant loading and fast tuning, Intuitive UI with LED indicator, Visual indicators for tuned strings, Advanced settings and tuning fork (in-app purchase)

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Settings | Free | one-time |
| Tuning Fork | Free | one-time |


### Endless A

[App page](https://appshunter.io/ios/app/endless-a-440/id971330737)

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.

**Highlights:** 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

**Features:** macOS Compatibility, Vision Pro support, iPhone Duo support

**In-app purchases:** none


## Frequently asked questions

### Is Viola Tuner Professional free?

Viola Tuner Professional costs $9.99, and also offers in-app purchases.

### Is Endless A free?

Endless A is free to download, with no in-app purchases.

### Which has better reviews, Viola Tuner Professional or Endless A?

Viola Tuner Professional is rated higher. Viola Tuner Professional averages 3.9 out of 5 from 9 ratings, while Endless A averages 3.5 from 4 ratings.

### Do Viola Tuner Professional or Endless A have ads?

Neither Viola Tuner Professional nor Endless A shows ads.

### Which is updated more often, Viola Tuner Professional or Endless A?

Viola Tuner Professional ships an update every 4 months, and Endless A every 2 weeks. Most recently, Viola Tuner Professional was updated on November 1, 2026 and Endless A on November 1, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*