# CT Temp Helper vs Decibel Meter

The clearest difference is in-app purchases: CT Temp Helper at none against Decibel Meter's 4. CT Temp Helper also leads on ads (none vs shown) and update cadence (every 8 days vs every 4 weeks). On price and device support there is nothing between them.

Both are free to download. Decibel Meter sells 4 in-app purchases, starting at $4.99 per month. CT Temp Helper asks for nothing beyond the download.

CT Temp Helper ships an update every 8 days, Decibel Meter every 4 weeks. The most recent releases landed on November 4, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | CT Temp Helper | Decibel Meter |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 8 days** | Every 4 weeks |
| Size | 55 MB | 14 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [琳 贾](https://appshunter.io/developer/1674959382) | [Nico Schroeder](https://appshunter.io/developer/432790036) |

## What reviewers say

### CT Temp Helper

[App page](https://appshunter.io/ios/app/ct-temp-helper/id6473035605)

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

**In-app purchases:** none


### Decibel Meter

[App page](https://appshunter.io/ios/app/decibel-meter-noise-analyzer/id6747433637)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One Month Premium | $4.99 | per month |
| One Week Premium | $5.99 | per 7 days |
| One Year Premium | $19.99 | per year |
| Lifetime Premium | $29.99 | one-time |


## Frequently asked questions

### Is CT Temp Helper free?

CT Temp Helper is free to download, with no in-app purchases.

### Is Decibel Meter free?

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

### Do CT Temp Helper or Decibel Meter have ads?

Decibel Meter shows ads; CT Temp Helper does not.

### Which is updated more often, CT Temp Helper or Decibel Meter?

CT Temp Helper ships an update every 8 days, and Decibel Meter every 4 weeks. Most recently, CT Temp Helper was updated on November 4, 2026 and Decibel Meter on October 28, 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.*