# NoiseLevel vs Calphace

The clearest difference is price: Calphace at Free against NoiseLevel's $0.99. NoiseLevel's advantage is in-app purchases (none vs 3) and ads (none vs shown). On device support there is nothing between them.

Calphace is free to download; NoiseLevel costs $0.99 up front. Calphace sells 3 one-off in-app purchases. NoiseLevel asks for nothing beyond the download.

NoiseLevel ships an update fortnightly, Calphace monthly. The most recent releases landed on September 26, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | NoiseLevel | Calphace |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[2.6 (28 ratings)](https://appshunter.io/ios/app/noiselevel/id302830630/reviews)** | — |
| Number of ratings | **28** | — |
| Positive reviews | 56.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Fortnightly** | Monthly |
| Monetization | Paid | — |
| Size | 3 MB | 7 MB |
| Requires iOS | **10.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | +4 | 4+ |
| Developer | [KBMSoft ApS](https://appshunter.io/developer/288294299) | [Akihiro Usui](https://appshunter.io/developer/1387267485) |

## What reviewers say

### NoiseLevel

[App page](https://appshunter.io/ios/app/noiselevel/id302830630)

Measure ambient sound levels in decibels using your device's microphone. Visualize sound intensity with a dynamic balloon that changes size and color, bursting at high levels. Experiment with different sounds and environments for fun and insight.

**Highlights:** Measures sound in decibels (dB), Visualizes sound with a dynamic balloon, Balloon size and color change with sound level, Balloon bursts at high sound levels, Uses device microphone, Screen orientation flips

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

**In-app purchases:** none


### Calphace

[App page](https://appshunter.io/ios/app/calphace/id1587107292)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Snack-Sized Tip | $0.49 | one-time |
| Coffee-Sized Tip | $1.99 | one-time |
| Lunch-Sized Tip | $3.99 | one-time |


## Frequently asked questions

### Is NoiseLevel free?

NoiseLevel costs $0.99, with no in-app purchases.

### Is Calphace free?

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

### Do NoiseLevel or Calphace have ads?

Calphace shows ads; NoiseLevel does not.

### Which is updated more often, NoiseLevel or Calphace?

NoiseLevel ships an update fortnightly, and Calphace monthly. Most recently, NoiseLevel was updated on September 26, 2026 and Calphace on September 25, 2026.

---

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