Comparison

Onshape 3D CAD vs Strobe Light Tachometer

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

Head to head
About

Onshape 3D CAD

This professional CAD platform enables real-time collaboration on product design from any device. It offers parametric modeling tools, secure cloud storage, and version control, streamlining the design process for teams and individuals. Supports students and educators with free access for non-commercial projects.

Highlights
  • Parametric modeling tools
  • Real-time team collaboration
  • Cloud-based data management
  • Cross-device access
  • Version control and history
  • Commenting and feedback tools
Read full description

Onshape is a full mechanical CAD platform designed for professional users and extended teams. Create, edit, collaborate, and comment in real time with others from any computer or mobile device with an internet connection (free sign-up required). With Onshape’s secure cloud workspace teams can work together from anywhere on any device without the hassles of file management, IT overhead, and license key distribution, helping engineers focus more on doing their best work. Parametric CAD: • Design parts together in Part Studios with a full suite of parametric modeling tools • Create mechanical Assemblies to capture complex motion Ease of Access: • Create, edit, and view from any computer or mobile device (internet connection required) • Begin a project from one device and seamlessly continue from another Collaboration: • Instantly share your CAD data with your teams and partners. Monitor, change, and revoke permissions at any time • Work together with other users and view changes in real-time as they are made • Use Follow mode to see exactly what your teammate sees and add suggestions using Onshape’s built-in commenting tools Data Management: • Maintain a single source of truth for your data, no more sending around or checking in and out of files • Never worry about losing your work, all of your changes are saved automatically • Explore multiple design ideas in parallel and create professional release and approval processes for your designs Onshape for iOS also features Apple Pencil support for more intuitive sketching, navigation, and precise selection. Onshape proudly supports students and educators free of charge and is available free for non-commercial projects in an open-source public work space. Since Onshape is updated every few weeks with dozens of new features and user-requested enhancements, keep an eye out for update notifications from the Apple App Store.

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!!

Screenshots

Onshape 3D CAD4 screens
Strobe Light Tachometer3 screens

Verdict

The call

The clearest difference is rating: Strobe Light Tachometer at 4.2 against Onshape 3D CAD's 3.5. Strobe Light Tachometer also leads on monetization model (free vs free with in-app purchases) and review sentiment (63% vs 47%). Onshape 3D CAD's advantage is update cadence (every 3 weeks vs every 7 months). On price, ratings volume, ads and in-app purchases 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 3.5. Both are backed by a comparable volume of ratings — 408 and 277 respectively. Written reviews point the same way: 47% of Onshape 3D CAD's written reviews are positive against 63% of Strobe Light Tachometer's.

UpkeepUpdate frequency

Onshape 3D CAD ships an update every 3 weeks, Strobe Light Tachometer every 7 months. The most recent releases landed on September 20, 2026 and September 22, 2026 respectively.

Scorecard5 real differences · 5 level
Onshape 3D CAD versus Strobe Light Tachometer: the parameters behind the verdict, then further details
ParameterOnshape 3D CADStrobe Light Tachometer
PriceFreeFree
Rating3.5 (408 ratings)4.2 (277 ratings) — better
Positive reviews47.4% of reviews63.2% of reviews — better
Number of ratings408 — better277
Update frequencyEvery 3 weeks — betterEvery 7 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPadiPhone, iPod
Requires iOS18.07.0 — better
Further details — not scored
Size76 MB4 MB
Age rating4+4+
DeveloperPTC Inc.Motionics LLC

Customer experience

Onshape 3D CAD

All ratings408 ratings
Positive62.0%
Neutral5.9%
Negative32.1%
Written reviews424 reviews
Positive47.4%
Neutral6.4%
Negative46.2%

Strobe Light Tachometer

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

User reviews

Onshape 3D CAD

From 408 App Store ratings

What we love

  • 🚀 Powerful CAD features
  • 🌐 Accessible from any device
  • 👍 Intuitive interface
  • 💡 Great for on-site work
  • 🌟 Exceptional for a free app

Room to improve

  • 🐛 Crashes and stability issues
  • 👎 Unintuitive and clunky UI
  • 🔒 Requires account sign-up
  • 💰 Expensive paid plans
  • 🔍 Difficult to find/use key features

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

Bugs and requests

Onshape 3D CAD

Reported bugs

5 issues
  • Frequent crashes and freezes
  • Dimensions not visible/editable
  • Rotation/view controls unreliable
  • Unable to create account
  • Incompatible with older devices

Requested features

5 requests
  • Add keyboard shortcuts
  • Improve dimensioning tools
  • Allow private file storage
  • Optimize for iPad/Apple Pencil
  • Provide better documentation/tutorials

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

In-app purchases

None

Onshape 3D CAD

No in-app purchases

None

Strobe Light Tachometer

No in-app purchases

Questions

Is Onshape 3D CAD free?
Onshape 3D CAD is free to download, with no in-app purchases.
Is Strobe Light Tachometer free?
Strobe Light Tachometer is free to download, with no in-app purchases.
Which has better reviews, Onshape 3D CAD or Strobe Light Tachometer?
Strobe Light Tachometer is rated higher. Onshape 3D CAD averages 3.5 out of 5 from 408 ratings, while Strobe Light Tachometer averages 4.2 from 277 ratings.
Do Onshape 3D CAD or Strobe Light Tachometer have ads?
Neither Onshape 3D CAD nor Strobe Light Tachometer shows ads.
Which is updated more often, Onshape 3D CAD or Strobe Light Tachometer?
Onshape 3D CAD ships an update every 3 weeks, and Strobe Light Tachometer every 7 months. Most recently, Onshape 3D CAD was updated on September 20, 2026 and Strobe Light Tachometer on September 22, 2026.

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