# Strobe Light Tachometer vs Gyraline

The clearest difference is in-app purchases: Strobe Light Tachometer at none against Gyraline's 9. Strobe Light Tachometer also leads on rating (4.2 vs 3.8) and iOS requirement (7.0 vs 15.0). Gyraline's advantage is update cadence (fortnightly vs every 7 months). On price, review sentiment, ratings volume and ads there is nothing between them.

Both are free to download. Gyraline sells 9 in-app purchases, starting at $7.99 per 7 days. Strobe Light Tachometer asks for nothing beyond the download.

Strobe Light Tachometer holds the better App Store score, 4.2 against 3.8. Both are backed by a comparable volume of ratings — 277 and 99 respectively. Written reviews point the same way: 63% of Strobe Light Tachometer's written reviews are positive against 61% of Gyraline's.

Strobe Light Tachometer ships an update every 7 months, Gyraline fortnightly. The most recent releases landed on September 22, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Strobe Light Tachometer | Gyraline |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (277 ratings)](https://appshunter.io/ios/app/strobe-light-tachometer/id978182913/reviews)** | [3.8 (99 ratings)](https://appshunter.io/ios/app/gyraline/id6450752768/reviews) |
| Number of ratings | **277** | 99 |
| Positive reviews | **63.2% of reviews** | 61.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Fortnightly** |
| Monetization | **Free** | Paid |
| Size | 4 MB | 63 MB |
| Requires iOS | **7.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Motionics LLC](https://appshunter.io/developer/424498959) | [Mechly LLC](https://appshunter.io/developer/1694760852) |

## What reviewers say

### 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


### Gyraline

[App page](https://appshunter.io/ios/app/gyraline/id6450752768)

This app transforms your smartphone and a specialized toolkit into a professional-grade wheel alignment system. It enables fast, accurate 4-wheel alignments for enthusiasts and DIYers in their own garage, offering precise measurements for various alignment angles.

**Highlights:** Precision 4-wheel alignment, Measure total toe (front & rear), Thrust line comparison, Camber measurement and adjustment, Caster sweep, Ackermann visualization

**Features:** Vision Pro support

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gyraline DIY One Week | $7.99 | per 7 days |
| Gyraline DIY One Month | $9.99 | per month |
| Quick Check Single Device | $99.99 | per month |
| Trial | Free | one-time |
| Single Token Purchase | $0.99 | one-time |
| Five Token Purchase | $3.99 | one-time |
| Weekend Pass | $5.99 | one-time |
| One Time Subscription | $69.99 | one-time |
| Gyraline Pro | $399.99 | one-time |

**What reviewers like**

- 👍 Great for DIY alignments
- 💰 Saves money on professional alignments
- 🚀 Quick and easy adjustments
- 🎯 Surprisingly accurate results
- 💡 Innovative tool for automotive enthusiasts

**What reviewers complain about**

- 🐛 Inconsistent measurements
- 🤔 Steep learning curve
- ⏳ Time-consuming process
- 🤷‍♂️ Confusing interface/instructions
- 🐛 App crashes/bugs

**Reported bugs**

- Inconsistent measurements
- App crashes
- Sensor axis reversed (G2)
- Accuracy defaults revert to 0.10°
- Camber tool unreliable

**Requested features**

- Add caster to features
- Live measurements via Bluetooth sensors
- Separate toe-only section for quicker adjustments
- Self-calibration setting
- Vehicle spec database for G1 owners


## Frequently asked questions

### Is Strobe Light Tachometer free?

Strobe Light Tachometer is free to download, with no in-app purchases.

### Is Gyraline free?

Gyraline is free to download, with in-app purchases available.

### Which has better reviews, Strobe Light Tachometer or Gyraline?

Strobe Light Tachometer is rated higher. Strobe Light Tachometer averages 4.2 out of 5 from 277 ratings, while Gyraline averages 3.8 from 99 ratings.

### Do Strobe Light Tachometer or Gyraline have ads?

Neither Strobe Light Tachometer nor Gyraline shows ads.

### Which is updated more often, Strobe Light Tachometer or Gyraline?

Strobe Light Tachometer ships an update every 7 months, and Gyraline fortnightly. Most recently, Strobe Light Tachometer was updated on September 22, 2026 and Gyraline on September 18, 2026.

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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.*