# iHarmonizer vs Star Data

The clearest difference is in-app purchases: Star Data at none against iHarmonizer's 5. iHarmonizer's advantage is iOS requirement (13.0 vs 15.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. iHarmonizer sells 5 one-off in-app purchases. Star Data asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 months. Both last shipped on October 1, 2026.

## The numbers

| Metric | iHarmonizer | Star Data |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/iharmonizer/id488536254/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 98 MB | 35 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Manufacturing Laboratories, Inc.](https://appshunter.io/developer/488536257) | [Deeper Co., Ltd.](https://appshunter.io/developer/1895586766) |

## What reviewers say

### iHarmonizer

[App page](https://appshunter.io/ios/app/iharmonizer/id488536254)

Record machining noise, save files, and send for free evaluation. An in-app purchase allows for immediate, on-site analysis to detect chatter and suggest optimal spindle speeds.

**Highlights:** Record machining noise, Save audio files, Free MLI evaluation, In-app purchase for immediate analysis, Chatter detection, Suggests alternate spindle speeds, Indicates no stable spindle speed

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Regulations 10 Pack | $24.99 | one-time |
| Regulations 50 Pack | $99.99 | one-time |
| Regulations 100 Pack | $99.99 | one-time |
| Regulations 200 Pack | $299.99 | one-time |
| Regulations 500 Pack | $299.99 | one-time |


### Star Data

[App page](https://appshunter.io/ios/app/star-data/id6473402363)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is iHarmonizer free?

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

### Is Star Data free?

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

### Do iHarmonizer or Star Data have ads?

Neither iHarmonizer nor Star Data shows ads.

### Which is updated more often, iHarmonizer or Star Data?

iHarmonizer ships an update every 3 months, and Star Data every 3 months. Most recently, iHarmonizer was updated on October 1, 2026 and Star Data on October 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.*