# GoCertius vs NoiseGuard

The clearest difference is in-app purchases: GoCertius at none against NoiseGuard's 1. GoCertius also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. NoiseGuard sells 1 one-off in-app purchase. GoCertius asks for nothing beyond the download.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 30, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | GoCertius | NoiseGuard |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | Monthly |
| Size | 32 MB | 7 MB |
| Requires iOS | **17.6** | 18.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [EAD Trust](https://appshunter.io/developer/1687518787) | [Chia-Chun Hsieh](https://appshunter.io/developer/908221958) |

## What reviewers say

### GoCertius

[App page](https://appshunter.io/ios/app/gocertius/id6463776937)

**Features:** Vision Pro support

**In-app purchases:** none


### NoiseGuard

[App page](https://appshunter.io/ios/app/noiseguard-decibel-meter/id6801839941)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| NoiseGuard Pro Lifetime | $4.99 | one-time |


## Frequently asked questions

### Is GoCertius free?

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

### Is NoiseGuard free?

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

### Do GoCertius or NoiseGuard have ads?

NoiseGuard shows ads; GoCertius does not.

### Which is updated more often, GoCertius or NoiseGuard?

GoCertius ships an update monthly, and NoiseGuard monthly. Most recently, GoCertius was updated on October 30, 2026 and NoiseGuard 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.*