# SignalClock vs NoiseLog

The clearest difference is price: NoiseLog at Free against SignalClock's $0.99. NoiseLog also leads on update cadence (every 3 weeks vs every 5 months). SignalClock's advantage is ads (none vs shown) and device support (3 vs 1). On in-app purchases there is nothing between them.

NoiseLog is free to download; SignalClock costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

SignalClock ships an update every 5 months, NoiseLog every 3 weeks. The most recent releases landed on September 27, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | SignalClock | NoiseLog |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Size | 103 MB | 4 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Masafumi Endoh](https://appshunter.io/developer/757354996) | [Kai Hoeher](https://appshunter.io/developer/693968628) |

## What reviewers say

### SignalClock

[App page](https://appshunter.io/ios/app/signalclock/id757354993)

**Features:** macOS Compatibility

**In-app purchases:** none


### NoiseLog

[App page](https://appshunter.io/ios/app/noiselog-decibel-meter/id6766041381)

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

**In-app purchases:** none


## Frequently asked questions

### Is SignalClock free?

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

### Is NoiseLog free?

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

### Do SignalClock or NoiseLog have ads?

NoiseLog shows ads; SignalClock does not.

### Which is updated more often, SignalClock or NoiseLog?

SignalClock ships an update every 5 months, and NoiseLog every 3 weeks. Most recently, SignalClock was updated on September 27, 2026 and NoiseLog on October 2, 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.*