# Decibels vs Kashf Lens

The clearest difference is in-app purchases: Kashf Lens at none against Decibels's 1. Kashf Lens also leads on update cadence (weekly vs every 5 months) and iOS requirement (16.0 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. Decibels sells 1 one-off in-app purchase. Kashf Lens asks for nothing beyond the download.

Decibels ships an update every 5 months, Kashf Lens weekly. The most recent releases landed on October 1, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Decibels | Kashf Lens |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 months | **Weekly** |
| Size | 6 MB | 3 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Merano Studio Limited](https://appshunter.io/developer/1783493234) | [Azziz Mimouni](https://appshunter.io/developer/1877626721) |

## What reviewers say

### Decibels

[App page](https://appshunter.io/ios/app/decibels/id6749821741)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Leave a Tip | $0.99 | one-time |


### Kashf Lens

[App page](https://appshunter.io/ios/app/kashf-lens-sensor-explorer/id6759244520)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Decibels free?

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

### Is Kashf Lens free?

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

### Do Decibels or Kashf Lens have ads?

Neither Decibels nor Kashf Lens shows ads.

### Which is updated more often, Decibels or Kashf Lens?

Decibels ships an update every 5 months, and Kashf Lens weekly. Most recently, Decibels was updated on October 1, 2026 and Kashf Lens on October 3, 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.*