# Strobe tachometer (RPM meter) vs Skyhawk Security Alert

The clearest difference is in-app purchases: Skyhawk Security Alert at none against Strobe tachometer (RPM meter)'s 2. Skyhawk Security Alert also leads on iOS requirement (12.0 vs 15.6). On price, ads and device support there is nothing between them.

Both are free to download. Strobe tachometer (RPM meter) sells 2 one-off in-app purchases. Skyhawk Security Alert asks for nothing beyond the download.

## The numbers

| Metric | Strobe tachometer (RPM meter) | Skyhawk Security Alert |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (84 ratings)](https://appshunter.io/ios/app/strobe-tachometer-rpm-meter/id831460940/reviews)** | — |
| Number of ratings | **84** | — |
| Positive reviews | 68.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 16 MB | 39 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Dmitriy Kharutskiy](https://appshunter.io/developer/817385891) | [Skyhawk Security](https://appshunter.io/developer/1813163103) |

## What reviewers say

### Strobe tachometer (RPM meter)

[App page](https://appshunter.io/ios/app/strobe-tachometer-rpm-meter/id831460940)

Measure rotational speeds of objects using your phone's flashlight, laser, or magnetic sensor. Detect precise RPMs with adjustable flicker frequencies and a wide measurement range. Ideal for analyzing fan speeds, engine RPMs, and more.

**Highlights:** Strobe tachometer function, Laser tachometer mode, Magnetic tachometer mode, Adjustable flicker frequency, RPM and Hz display, High precision measurement

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full version of the stroboscopic tachometer | $2.99 | one-time |
| Laser Tachometer and Magnetic | $2.99 | one-time |


### Skyhawk Security Alert

[App page](https://appshunter.io/ios/app/skyhawk-security-alert/id6745818298)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Strobe tachometer (RPM meter) free?

Strobe tachometer (RPM meter) is free to download, with in-app purchases available.

### Is Skyhawk Security Alert free?

Skyhawk Security Alert is free to download, with no in-app purchases.

### Do Strobe tachometer (RPM meter) or Skyhawk Security Alert have ads?

Neither Strobe tachometer (RPM meter) nor Skyhawk Security Alert shows ads.

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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.*