# iHarmonizer vs Ammann ADS

The clearest difference is in-app purchases: Ammann ADS at none against iHarmonizer's 5. iHarmonizer's advantage is iOS requirement (13.0 vs 15.1). 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. Ammann ADS asks for nothing beyond the download.

iHarmonizer ships an update every 3 months, Ammann ADS every 4 months. The most recent releases landed on October 16, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | iHarmonizer | Ammann ADS |
| --- | --- | --- |
| 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 4 months |
| Monetization | Free with in-app purchases | — |
| Size | 98 MB | 50 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Manufacturing Laboratories, Inc.](https://appshunter.io/developer/488536257) | [Ammann Switzerland Ltd](https://appshunter.io/developer/1036134398) |

## 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 |


### Ammann ADS

[App page](https://appshunter.io/ios/app/ammann-ads/id6443826706)

**In-app purchases:** none


## Frequently asked questions

### Is iHarmonizer free?

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

### Is Ammann ADS free?

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

### Do iHarmonizer or Ammann ADS have ads?

Neither iHarmonizer nor Ammann ADS shows ads.

### Which is updated more often, iHarmonizer or Ammann ADS?

iHarmonizer ships an update every 3 months, and Ammann ADS every 4 months. Most recently, iHarmonizer was updated on October 16, 2026 and Ammann ADS on October 11, 2026.

---

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