# Onshape 3D CAD vs Strobe Light Tachometer

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.

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

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.

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.

## The numbers

| Metric | Onshape 3D CAD | Strobe Light Tachometer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (408 ratings)](https://appshunter.io/ios/app/onshape-3d-cad/id923421284/reviews) | **[4.2 (277 ratings)](https://appshunter.io/ios/app/strobe-light-tachometer/id978182913/reviews)** |
| Number of ratings | **408** | 277 |
| Positive reviews | 47.4% of reviews | **63.2% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 7 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 76 MB | 4 MB |
| Requires iOS | 18.0 | **7.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [PTC Inc.](https://appshunter.io/developer/501201404) | [Motionics LLC](https://appshunter.io/developer/424498959) |

## What reviewers say

### Onshape 3D CAD

[App page](https://appshunter.io/ios/app/onshape-3d-cad/id923421284)

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

**In-app purchases:** none

**What reviewers like**

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

**What reviewers complain about**

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

**Reported bugs**

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

**Requested features**

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


### Strobe Light Tachometer

[App page](https://appshunter.io/ios/app/strobe-light-tachometer/id978182913)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- ✅ 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

**What reviewers complain about**

- 💡 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

**Reported bugs**

- 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

**Requested features**

- 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


## Frequently asked 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.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*