# HighFinesse/Ångstrom Wavemeter vs Phon

The clearest difference is in-app purchases: HighFinesse/Ångstrom Wavemeter at none against Phon's 1. HighFinesse/Ångstrom Wavemeter also leads on iOS requirement (12.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Phon sells 1 one-off in-app purchase. HighFinesse/Ångstrom Wavemeter asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on November 3, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | HighFinesse/Ångstrom Wavemeter | Phon |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free | — |
| Size | 17 MB | 2 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [HighFinesse Laser and Electronic Systems GmbH](https://appshunter.io/developer/1572402473) | [carlos prieto ortiz](https://appshunter.io/developer/1889995023) |

## What reviewers say

### HighFinesse/Ångstrom Wavemeter

[App page](https://appshunter.io/ios/app/highfinesseangstrom-wavemeter/id1572402471)

Monitor pulse and CW-lasers with high accuracy. View wavelength and intensity data for each device channel. Offers an acoustic mode for monitoring when the screen is not visible.

**Highlights:** Pulse and CW-laser monitoring, Wavelength and intensity display, TCP/IP local network connection, Acoustic monitoring mode, Real-time measurement data

**Features:** macOS Compatibility

**In-app purchases:** none


### Phon

[App page](https://appshunter.io/ios/app/phon-calibrated-spl-meter/id6775261720)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Phon App | $14.99 | one-time |


## Frequently asked questions

### Is HighFinesse/Ångstrom Wavemeter free?

HighFinesse/Ångstrom Wavemeter is free to download, with no in-app purchases.

### Is Phon free?

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

### Do HighFinesse/Ångstrom Wavemeter or Phon have ads?

Neither HighFinesse/Ångstrom Wavemeter nor Phon shows ads.

### Which is updated more often, HighFinesse/Ångstrom Wavemeter or Phon?

HighFinesse/Ångstrom Wavemeter ships an update every 3 weeks, and Phon every 3 weeks. Most recently, HighFinesse/Ångstrom Wavemeter was updated on November 3, 2026 and Phon 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.*