# Gyraline vs Optimum Angle

The clearest difference is price: Gyraline at Free against Optimum Angle's $3.99. Gyraline also leads on update cadence (fortnightly vs every 6 months) and ratings volume (99 vs 1). Optimum Angle's advantage is rating (5.0 vs 3.8) and review sentiment (100% vs 61%). On ads, monetization model, device support and iOS requirement there is nothing between them.

Gyraline is free to download; Optimum Angle costs $3.99 up front. Gyraline sells 9 in-app purchases, starting at $7.99 per 7 days. Optimum Angle asks for nothing beyond the download.

Optimum Angle holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: Gyraline has 99 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 61% of Gyraline's written reviews are positive against 100% of Optimum Angle's.

Gyraline ships an update fortnightly, Optimum Angle every 6 months. The most recent releases landed on September 18, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Gyraline | Optimum Angle |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | [3.8 (99 ratings)](https://appshunter.io/ios/app/gyraline/id6450752768/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/optimum-angle/id6651824465/reviews)** |
| Number of ratings | **99** | 1 |
| Positive reviews | 61.4% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 6 months |
| Monetization | Paid | Paid |
| Size | 63 MB | 93 MB |
| Requires iOS | 15.0 | 15 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mechly LLC](https://appshunter.io/developer/1694760852) | [John Dickinson](https://appshunter.io/developer/1763955570) |

## What reviewers say

### 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


### Optimum Angle

[App page](https://appshunter.io/ios/app/optimum-angle/id6651824465)

This app provides precise drive shaft angle measurements for mechanics, engineers, and automotive enthusiasts. It simplifies workflows and enhances performance with an intuitive interface and advanced algorithms for accurate adjustments.

**Highlights:** Precision drive shaft angle measurement, Intuitive user interface, Advanced measurement algorithms, Performance optimization, Simplified workflow

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Gyraline free?

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

### Is Optimum Angle free?

Optimum Angle costs $3.99, with no in-app purchases.

### Which has better reviews, Gyraline or Optimum Angle?

Optimum Angle is rated higher. Gyraline averages 3.8 out of 5 from 99 ratings, while Optimum Angle averages 5.0 from 1 ratings.

### Do Gyraline or Optimum Angle have ads?

Neither Gyraline nor Optimum Angle shows ads.

### Which is updated more often, Gyraline or Optimum Angle?

Gyraline ships an update fortnightly, and Optimum Angle every 6 months. Most recently, Gyraline was updated on September 18, 2026 and Optimum Angle on September 8, 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.*