# Harmonia vs ODDADA

The clearest difference is price: Harmonia at Free against ODDADA's $4.99. ODDADA's advantage is in-app purchases (none vs 6) and ads (none vs shown). On rating, review sentiment and device support there is nothing between them.

Harmonia is free to download; ODDADA costs $4.99 up front. Harmonia sells 6 one-off in-app purchases. ODDADA asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Harmonia against 5.0 for ODDADA. Both are backed by a comparable volume of ratings — 2 and 8 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Harmonia ships an update monthly, ODDADA every 2 days. The most recent releases landed on November 1, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Harmonia | ODDADA |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/harmonia-match-the-notes/id6787542089/reviews) | [5.0 (8 ratings)](https://appshunter.io/ios/app/oddada/id6794277881/reviews) |
| Number of ratings | 2 | **8** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 2 days** |
| Monetization | **Free with in-app purchases** | Paid |
| Best chart rank | — | **#15** |
| Size | 112 MB | 438 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Rowan Vredenburg](https://appshunter.io/developer/6787542241) | [Sven Ahlgrimm](https://appshunter.io/developer/6794277883) |

## What reviewers say

### Harmonia

[App page](https://appshunter.io/ios/app/harmonia-match-the-notes/id6787542089)

Train your ear with this music puzzle game. Listen to a target sound, then recreate it from memory by selecting instruments and adjusting notes. Explore musical worlds and compete in daily challenges to test your auditory skills.

**Highlights:** Recreate sounds from memory, Adjust instrument pitches, Hundreds of levels across musical worlds, Daily challenges, Ear training mechanics, No time pressure

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Refill Lives | $0.99 | one-time |
| Replay Pack (Small) | $0.99 | one-time |
| Hint Pack (Small) | $0.99 | one-time |
| Replay Pack (Large) | $1.79 | one-time |
| Hint Pack (Large) | $1.79 | one-time |
| Remove Ads | $3.99 | one-time |


### ODDADA

[App page](https://appshunter.io/ios/app/oddada/id6794277881)

**Currently charting:** #15 Top Paid · Music, #114 Top Grossing · Music, #126 Top Paid · Casual (US App Store)

This app is a creative musical toybox where users can build unique soundscapes using interactive elements. Collect melodies, unlock new instruments and gadgets, and customize virtual cassettes of your creations. Share your music as audio or video files.

**Highlights:** Collect melodies and loops, Unlock gadgets and upgrades, Customize and collect virtual cassettes, Export songs as audio or video, Playful and relaxing musical experience

**Features:** iPhone Duo support

**In-app purchases:** none


## Frequently asked questions

### Is Harmonia free?

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

### Is ODDADA free?

ODDADA costs $4.99, with no in-app purchases.

### Which has better reviews, Harmonia or ODDADA?

Harmonia and ODDADA are both rated 5.0 out of 5 on the App Store, from 2 and 8 ratings respectively.

### Do Harmonia or ODDADA have ads?

Harmonia shows ads; ODDADA does not.

### Which is updated more often, Harmonia or ODDADA?

Harmonia ships an update monthly, and ODDADA every 2 days. Most recently, Harmonia was updated on November 1, 2026 and ODDADA on November 10, 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.*