# Noise Timer vs AmphiApp | Citizen Science

The clearest difference is price: AmphiApp | Citizen Science at Free against Noise Timer's $6.99. AmphiApp | Citizen Science also leads on update cadence (every 3 months vs every 16 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

AmphiApp | Citizen Science is free to download; Noise Timer costs $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Noise Timer ships an update every 16 months, AmphiApp | Citizen Science every 3 months. The most recent releases landed on September 29, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Noise Timer | AmphiApp | Citizen Science |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 3 months** |
| Size | 1 MB | 56 MB |
| Requires iOS | 13.1 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Werner Krause](https://appshunter.io/developer/1180618127) | [SPOTTERON Gmbh](https://appshunter.io/developer/1378099707) |

## What reviewers say

### Noise Timer

[App page](https://appshunter.io/ios/app/noise-timer/id1503516276)

**Features:** macOS Compatibility

**In-app purchases:** none


### AmphiApp | Citizen Science

[App page](https://appshunter.io/ios/app/amphiapp-citizen-science/id6468587877)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Noise Timer free?

Noise Timer costs $6.99, with no in-app purchases.

### Is AmphiApp | Citizen Science free?

AmphiApp | Citizen Science is free to download, with no in-app purchases.

### Do Noise Timer or AmphiApp | Citizen Science have ads?

Neither Noise Timer nor AmphiApp | Citizen Science shows ads.

### Which is updated more often, Noise Timer or AmphiApp | Citizen Science?

Noise Timer ships an update every 16 months, and AmphiApp | Citizen Science every 3 months. Most recently, Noise Timer was updated on September 29, 2026 and AmphiApp | Citizen Science on September 28, 2026.

---

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