# ShiftPower vs Decibel：db Sound Meter

The clearest difference is review sentiment: ShiftPower at 71% against Decibel：db Sound Meter's 8%. ShiftPower also leads on in-app purchases (none vs 3) and update cadence (every 2 weeks vs every 9 months). Decibel：db Sound Meter's advantage is ads (none vs shown) and iOS requirement (13.0 vs 15.1). On price there is nothing between them.

Both are free to download. Decibel：db Sound Meter sells 3 in-app purchases, starting at $3.99 per 7 days. ShiftPower asks for nothing beyond the download.

ShiftPower ships an update every 2 weeks, Decibel：db Sound Meter every 9 months. The most recent releases landed on September 22, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | ShiftPower | Decibel：db Sound Meter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (316 ratings)](https://appshunter.io/ios/app/shiftpower/id1473662284/reviews)** | — |
| Number of ratings | **316** | — |
| Positive reviews | **71.4% of reviews** | 8.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Every 9 months |
| Monetization | **Ad-supported** | Freemium |
| Size | 109 MB | 27 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPod |
| Age rating | +4 | 9+ |
| Developer | [Faaftech Tecnologia Ltda](https://appshunter.io/developer/1473662283) | [Qinghe Net LLC](https://appshunter.io/developer/1780821316) |

## What reviewers say

### ShiftPower

[App page](https://appshunter.io/ios/app/shiftpower/id1473662284)

Enhance your driving experience with customizable acceleration modes for sportier and safer performance. Control your vehicle's safety with dedicated Lock and Valet modes, offering over 300 acceleration response maps for a personalized feel.

**Highlights:** Four customizable driving modes, Lock and Valet safety modes, Over 300 acceleration response maps, Sportier and safer overtaking, Plug-and-Play installation

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### Decibel：db Sound Meter

[App page](https://appshunter.io/ios/app/decibeldb-sound-meter/id6740468843)

Measure noise levels accurately with this practical tool. It offers real-time decibel monitoring, photo and video recording with decibel watermarks, and downloadable reports for easy noise management.

**Highlights:** Real-time decibel monitoring, Photo recording with decibel watermark, Real-time video recording, Downloadable monitoring reports, Detailed decibel detection records

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Members | $3.99 | per 7 days |
| Monthly Membership | $5.99 | per month |
| Annual Membership | $14.99 | per year |


## Frequently asked questions

### Is ShiftPower free?

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

### Is Decibel：db Sound Meter free?

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

### Do ShiftPower or Decibel：db Sound Meter have ads?

ShiftPower shows ads; Decibel：db Sound Meter does not.

### Which is updated more often, ShiftPower or Decibel：db Sound Meter?

ShiftPower ships an update every 2 weeks, and Decibel：db Sound Meter every 9 months. Most recently, ShiftPower was updated on September 22, 2026 and Decibel：db Sound Meter on September 26, 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.*