Comparison

Strobe Light Tachometer vs OctoApp for OctoPrint/Klipper

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

OctoApp for OctoPrint/Klipper

Control and monitor your 3D printers remotely from your iOS device. Prepare prints, manage files, and tune settings in real-time with a streamlined interface. Supports OctoPrint, Klipper, and various printer brands.

Highlights
  • Remote printer control
  • Print preparation
  • File management
  • Webcam support
  • Notifications
  • Gcode viewer
  • Plugin support
Features
Read full description

OctoApp is build with iOS in mind and is completely optimized for being used on a iPhone or iPad. The app supports OctoPrint and Klipper (Moonraker, Mainsail and Fluidd), Bambu Lab and Elegoo printers. The UI is structured into three workspaces: Connect, Prepare, Print. The Connect workspace helps you get your printer connected to OctoPrint and as soon as a printer is available OctoApp will move to the Prepare workspace. Here you can get ready for your next print! Heat your hotend, swap filament or level the bed. When you are ready and start your print, OctoApp shows the Print workspace where you can control and tune your print! This concepts allows for a simple and fast UI while not sacrificing on features! OctoApp already offers you: + Easy print preparation + Control your print + Full file access and management + Full terminal access + Flow rate, Feed rate and fan controls + Webcam support (also muticam support) + Dark mode + High performance + Notifications about your print and filament + Gcode Viewer + Support for multiple printers + Many power control plugins like PSU Control or IKEA Tradfri + Automatic lights + PrintTimeGenius support + Support for many of your favourite plugins, like ArcWelder or SpoolManager + Remote connection with supported plugin or manual setup, the app switches automatically + OctoEverywhere integration + Obico integration + Works with VPNs, HTTPS and Basic Auth + And much, much more! There is a new feature update roughly 4-8 weeks! Let me know what you are missing! Important notice for remote connections: The app does not provide required servers. You can either set something up yourself and provide the app with a URL reachable over the internet or use a plugin like OctoEverywhere, The Spaghetti Detective or ngrok. --- OctoApp is made for and compatible with but not officially associated with OctoPrint. OctoPrint is a registered trademark. Learn more at octoprint.org OctoApp is not associated with Obico, Bambu Lab, OctoEverywhere, Elegoo or other services integrated --- https://octoapp.eu/terms/

Screenshots

Strobe Light Tachometer3 screens
OctoApp for OctoPrint/Klipper4 screens

Verdict

The call

The clearest difference is rating: OctoApp for OctoPrint/Klipper at 4.9 against Strobe Light Tachometer's 4.2. OctoApp for OctoPrint/Klipper also leads on update cadence (every 9 days vs every 7 months) and review sentiment (93% vs 63%). Strobe Light Tachometer's advantage is in-app purchases (none vs 15) and iOS requirement (7.0 vs 17.6). On price, ads and device support 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. OctoApp for OctoPrint/Klipper sells 8 in-app purchases, starting at $0.99 per month. Strobe Light Tachometer asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

OctoApp for OctoPrint/Klipper holds the better App Store score, 4.9 against 4.2. Both are backed by a comparable volume of ratings — 277 and 1.3K respectively. Written reviews point the same way: 63% of Strobe Light Tachometer's written reviews are positive against 93% of OctoApp for OctoPrint/Klipper's.

UpkeepUpdate frequency

Strobe Light Tachometer ships an update every 7 months, OctoApp for OctoPrint/Klipper every 9 days. The most recent releases landed on September 22, 2026 and September 24, 2026 respectively.

Scorecard7 real differences · 3 level
Strobe Light Tachometer versus OctoApp for OctoPrint/Klipper: the parameters behind the verdict, then further details
ParameterStrobe Light TachometerOctoApp for OctoPrint/Klipper
PriceFreeFree
Rating4.2 (277 ratings)4.9 (1.3K ratings) — better
Positive reviews63.2% of reviews92.9% of reviews — better
Number of ratings2771.3K — better
Update frequencyEvery 7 monthsEvery 9 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, Apple Watch — better
Requires iOS7.0 — better17.6
Further details — not scored
Size4 MB248 MB
Age rating4+4+
DeveloperMotionics LLCErhard Christian Wurthner

Customer experience

Strobe Light Tachometer

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

OctoApp for OctoPrint/Klipper

All ratings1,252 ratings
Positive97.3%
Neutral1.9%
Negative0.8%
Written reviews98 reviews
Positive92.9%
Neutral3.1%
Negative4.1%

User reviews

Strobe Light Tachometer

From 277 App Store ratings

What we love

  • ✅ Accurate frequency and RPM measurements
  • 👍 Simple and user-friendly interface
  • 🎓 Excellent educational tool for teaching frequency concepts
  • 💰 Free application
  • ⚡ Quick and easy to use, even one-handed

Room to improve

  • 💡 LED flash brightness is too dim
  • 🐛 Strobe light cuts out or blacks out intermittently
  • 🐛 Inconsistent and erratic flashing patterns
  • ⚠️ Hardware compatibility issues with older iPhone models
  • 🐛 Strobe stops working after extended use

OctoApp for OctoPrint/Klipper

From 1.3K App Store ratings

What we love

  • 🚀 Excellent remote monitoring and control
  • 👍 Seamless integration with OctoPrint and plugins
  • 💡 Customizable and flexible UI
  • 🔒 Secure remote access with OctoEverywhere
  • ⭐ Exceptional customer support

Room to improve

  • 🐛 Occasional connectivity issues
  • 🔌 Unreliable remote access at times

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

OctoApp for OctoPrint/Klipper

Reported bugs

2 issues
  • Incorrect notifications for print progress
  • Compatibility issues with some printer models

Requested features

3 requests
  • Add support for Klipper-based printer firmwares
  • Implement iOS widgets for quick status checks
  • Improve camera rotation options

In-app purchases

None

Strobe Light Tachometer

No in-app purchases

8 purchases

OctoApp for OctoPrint/Klipper

Subscriptions2
  • Support for 1 month$0.991 Month
  • Support for 1 year7 Days trial$6.991 Year
One-time6
  • All features (Transfer)Free
  • Tip the developer$1.99
  • All features$11.99
Show 3 more
  • All features8 variants$12.99
  • All features$14.99
  • All features$17.99

Questions

Is Strobe Light Tachometer free?
Strobe Light Tachometer is free to download, with no in-app purchases.
Is OctoApp for OctoPrint/Klipper free?
OctoApp for OctoPrint/Klipper is free to download, with in-app purchases available.
Which has better reviews, Strobe Light Tachometer or OctoApp for OctoPrint/Klipper?
OctoApp for OctoPrint/Klipper is rated higher. Strobe Light Tachometer averages 4.2 out of 5 from 277 ratings, while OctoApp for OctoPrint/Klipper averages 4.9 from 1.3K ratings.
Do Strobe Light Tachometer or OctoApp for OctoPrint/Klipper have ads?
Neither Strobe Light Tachometer nor OctoApp for OctoPrint/Klipper shows ads.
Which is updated more often, Strobe Light Tachometer or OctoApp for OctoPrint/Klipper?
Strobe Light Tachometer ships an update every 7 months, and OctoApp for OctoPrint/Klipper every 9 days. Most recently, Strobe Light Tachometer was updated on September 22, 2026 and OctoApp for OctoPrint/Klipper on September 24, 2026.

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