# Strobe Light vs decibella 2

The clearest difference is update cadence: decibella 2 at every 2 weeks against Strobe Light's every 7 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Strobe Light ships an update every 7 months, decibella 2 every 2 weeks. The most recent releases landed on October 9, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Strobe Light | decibella 2 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (1 ratings)](https://appshunter.io/ios/app/strobe-light-rpm/id6747579407/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 7 months | **Every 2 weeks** |
| Monetization | Ad-supported | — |
| Size | 25 MB | 53 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Zain Saeed Mughal](https://appshunter.io/developer/1762408320) | [Jisu Jung](https://appshunter.io/developer/1731788096) |

## What reviewers say

### Strobe Light

[App page](https://appshunter.io/ios/app/strobe-light-rpm/id6747579407)

This application transforms your smartphone into a digital tachometer using its flashlight. It measures the rotational speed (RPM) of objects by flashing light at them, making them appear stationary when the flash rate matches their speed. Save readings and use it for mechanics, education, or industrial checks.

**Highlights:** Measures RPM of rotating objects, Adjustable strobe speed (1-10,000 RPM), Quick adjustment buttons (+/- increments), Flash sync for accuracy, Save and review RPM data, Works in low light conditions

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

**In-app purchases:** none


### decibella 2

[App page](https://appshunter.io/ios/app/decibella-2/id6768519741)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Strobe Light free?

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

### Is decibella 2 free?

decibella 2 is free to download, with no in-app purchases.

### Do Strobe Light or decibella 2 have ads?

Both Strobe Light and decibella 2 show ads.

### Which is updated more often, Strobe Light or decibella 2?

Strobe Light ships an update every 7 months, and decibella 2 every 2 weeks. Most recently, Strobe Light was updated on October 9, 2026 and decibella 2 on October 21, 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.*