# PianoMeter vs Jonio

The clearest difference is in-app purchases: Jonio at none against PianoMeter's 4. Jonio also leads on update cadence (daily vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. PianoMeter sells 4 in-app purchases, starting at $59.99 per year. Jonio asks for nothing beyond the download.

PianoMeter ships an update every 3 months, Jonio daily. The most recent releases landed on November 3, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | PianoMeter | Jonio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (42 ratings)](https://appshunter.io/ios/app/pianometer-piano-tuner/id1515529208/reviews)** | — |
| Number of ratings | **42** | — |
| Positive reviews | 76.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 30 MB | 48 MB |
| Requires iOS | 15 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Willey Piano](https://appshunter.io/developer/1515529207) | [Kleiton Filhinho](https://appshunter.io/developer/1650649601) |

## What reviewers say

### PianoMeter

[App page](https://appshunter.io/ios/app/pianometer-piano-tuner/id1515529208)

This app transforms your device into a professional electronic tuning aid for pianos. It analyzes each note's tonal characteristics to calculate an ideal custom tuning, going beyond standard chromatic tuners. Different upgrade levels offer expanded functionality for both hobbyists and professionals.

**Highlights:** Custom piano tuning calculation, Automatic note detection, Tonal characteristic measurement, Live frequency spectrum display, Inharmonicity measurement, Pitch raise mode, Multi-partial tone generator

**Features:** Family Sharing

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro 1-year subscription | $59.99 | per year |
| Plus version | $29.99 | one-time |
| Plus to Pro | $314.99 | one-time |
| Pro version | $350.00 | one-time |


### Jonio

[App page](https://appshunter.io/ios/app/jonio/id6792494615)

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

**In-app purchases:** none


## Frequently asked questions

### Is PianoMeter free?

PianoMeter is free to download, with in-app purchases available.

### Is Jonio free?

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

### Do PianoMeter or Jonio have ads?

Neither PianoMeter nor Jonio shows ads.

### Which is updated more often, PianoMeter or Jonio?

PianoMeter ships an update every 3 months, and Jonio daily. Most recently, PianoMeter was updated on November 3, 2026 and Jonio on October 29, 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.*