Comparison

Strobe Light Tachometer vs Easy

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Strobe Light Tachometer

Transform your iPhone into a powerful strobe light and tachometer. Precisely control flashing speeds from 1Hz to 130Hz to measure the RPM of rotating objects by making them appear stationary. Ideal for precise speed measurements in dark environments.

Highlights
  • Adjustable strobe speed (1-130Hz / 60-7800RPM)
  • Quick adjustment buttons (x2, ÷2)
  • Fine-tuning buttons for precise speed
  • Manual RPM input
  • Display speed in Hz and RPM
  • Light/dark background option
Features
Read full description

NOTE: The App is just for iPhone with flashlight. It doe NOT work on iPad, iPod touch or any iOS device without flashlight. Description: Using this App, you can control the flashing on/off speed of your phone flashlight between 1Hz to 130Hz. In another word, this App makes your iPhone into a strobe light. What's the Application then?! You can use this App to use your iPhone as a tachometer that measures the speed of any rotating object. How to use it? Suppose you have a fan and need to measure its speed (RPM). Turn on the fan in a DARK environment, launch the App on your iPhone (that has flashlight). Manually tune the speed using the main slider of the App to see the rotating object looks almost not moving. Then, start fine tuning using the three buttons in the App to get the exact speed. At this point the rotating object looks like stationary! But, it is moving! So, never touch the moving/rotating object during your test! Features: - Slider to adjust strobe light speed between 1-130Hz (60-7800RPM) - x2 and ÷2 buttons for quick adjustment of flashing speed - 3 Buttons for fine tuning of the speed up to 2 decimal: 0X.00, 00.X0, 00.0X - Textfield to manually enter the speed in RPM (tap on the speed label) - Button for light and dark background option - showing the speed in both Hz and RPM - simple and easy to use!!

About

Easy

This app works with specialized hardware to align rotating machinery and belt drives. It offers guided measurement processes, generates reports in PDF and Excel, and includes a searchable user manual. A demo mode allows testing functionality without the hardware.

Highlights
  • All measurement programs in one app
  • Intuitive step-by-step guidance
  • PDF and Excel report generation
  • Include photos and digital signatures in reports
  • Searchable user manual
  • Virtual demo detectors
Features
Read full description

The Easy-Laser® XT Alignment App is used together with the Easy-Laser XT alignment systems. With this combination, you align shafts, couplings, and other rotating machinery, as well as belt drives. Without the hardware, you can still use the app in demo mode to test the functionality. KEY FEATURES • Get all measurement programs in one single app. • The intuitive user interface guides you through the measurement process step by step. • A report is generated in PDF and Excel format. You can include photos with the report, add a digital signature, and share it. • The searchable user manual opens the relevant chapter depending on where in the process you are. • Virtual demo detectors allow you to experience the easy alignment process before you purchase the measuring units. HARDWARE • XT measuring units for shaft alignment – rugged, dust and waterproof according to both IP66 and IP67. Operating times are up to 24 hours of continuous use. • Digital belt alignment tool XT190. • Vibrometer XT280. COMPATIBILITY Verified to work on: • iOS 13/iPadOS 13 or newer This app is designed to work together with the Easy-Laser XT alignment products. They can be purchased separately from your local Easy-Laser distributor. For more information, please visit our web site.

Screenshots

Strobe Light Tachometer3 screens
Easy4 screens

Verdict

The call

The clearest difference is update cadence: Easy at every 2 months against Strobe Light Tachometer's every 7 months. Easy also leads on review sentiment (80% vs 63%). Strobe Light Tachometer's advantage is rating (4.2 vs 3.9) and ratings volume (277 vs 19). On price, ads, in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

Strobe Light Tachometer holds the better App Store score, 4.2 against 3.9. That said, the two scores are not equally well evidenced: Strobe Light Tachometer has 277 ratings behind it against 19, so its average is the more settled of the two. Written reviews complicate that: 63% of Strobe Light Tachometer's written reviews are positive against 80% of Easy's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Strobe Light Tachometer ships an update every 7 months, Easy every 2 months. The most recent releases landed on September 22, 2026 and June 4, 2026 respectively.

Scorecard5 real differences · 5 level
Strobe Light Tachometer versus Easy: the parameters behind the verdict, then further details
ParameterStrobe Light TachometerEasy
PriceFreeFree
Rating4.2 (277 ratings) — better3.9 (19 ratings)
Positive reviews63.2% of reviews80.0% of reviews — better
Number of ratings277 — better19
Update frequencyEvery 7 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS7.0 — better13.0
Further details — not scored
Size4 MB518 MB
Age rating4+4+
DeveloperMotionics LLCEasy-Laser AB

Customer experience

Strobe Light Tachometer

All ratings277 ratings
Positive78.7%
Neutral6.1%
Negative15.2%
Written reviews76 reviews
Positive63.2%
Neutral6.6%
Negative30.3%

Easy

All ratings18 ratings
Positive77.8%
Neutral0.0%
Negative22.2%
Written reviews5 reviews
Positive80.0%
Neutral0.0%
Negative20.0%

Bugs and requests

Strobe Light Tachometer

Reported bugs

9 issues
  • Strobe light cuts out every 2-3 seconds then resumes
  • LED flashes erratically on certain iPhone models (iPhone 14, iPhone XS, iPhone SE)
  • Strobe pulse is inconsistent and misses beats
  • App crashes or stops working after 20-30 minutes
  • Requires manual LED activation before starting strobe
Show 4 more
  • Incompatibility error message on iPhone devices
  • Strobe accuracy degrades at higher frequencies (above 45 Hz)
  • Flash pulses vary in length and brightness at high frequencies
  • App shows "only compatible with iPhone" error on iPhone devices

Requested features

7 requests
  • Ability to adjust brightness while strobe is running
  • Display accuracy specifications and hardware limitations
  • Option to set frequency by Hz in addition to RPM
  • Ability to specify number of fan blades for accurate RPM calculation
  • 2x and 1/2x multiplier options
Show 2 more
  • Reduced or removed advertisements
  • Display maximum blink rate for device hardware

Easy

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Strobe Light Tachometer

No in-app purchases

None

Easy

No in-app purchases

Questions

Is Strobe Light Tachometer free?
Strobe Light Tachometer is free to download, with no in-app purchases.
Is Easy free?
Easy is free to download, with no in-app purchases.
Which has better reviews, Strobe Light Tachometer or Easy?
Strobe Light Tachometer is rated higher. Strobe Light Tachometer averages 4.2 out of 5 from 277 ratings, while Easy averages 3.9 from 19 ratings.
Do Strobe Light Tachometer or Easy have ads?
Neither Strobe Light Tachometer nor Easy shows ads.
Which is updated more often, Strobe Light Tachometer or Easy?
Strobe Light Tachometer ships an update every 7 months, and Easy every 2 months. Most recently, Strobe Light Tachometer was updated on September 22, 2026 and Easy on June 4, 2026.

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