Comparison

Gyraline vs Optimum Angle

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

Head to head
About

Gyraline

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
Read full description

Precision 4-Wheel Alignment, Reimagined Gyraline is a revolutionary, patent-pending alignment system that turns your smartphone and our precision toolkit into a professional-grade wheel alignment machine. Perform the fastest, most accurate 4-wheel alignment you’ve ever done, right in your own garage. Measure Like a Pro • Total Toe (Front & Rear): Instantly measure total toe across both axles. • Thrust Line Comparison: Verify front toe alignment relative to the rear axle’s thrust line. • Body Centerline Alignment: Check toe against the vehicle’s geometric centerline. • Camber Mode: Measure and adjust camber with live digital precision. • Caster Mode: Sweep caster accurately, without expensive shop hardware. • Ackermann Mode: Visualize steering geometry like never before. Why Gyraline Gyraline brings professional alignment accuracy to enthusiasts, racers, and commuters without the need for bulky alignment racks. Fast setup, clear visuals, and uncompromising precision all powered by your phone.

About

Optimum Angle

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
Read full description

Optimize Your Drive Shaft Performance with Optimum Angle! Introducing Optimum Angle, the ultimate tool for precision drive shaft angle measurement! Whether you're a mechanic, engineer, or automotive enthusiast, Optimum Angle is designed to simplify your workflow and enhance performance. With an intuitive interface and advanced algorithms, Optimum Angle lets you quickly and accurately measure and adjust drive shaft angles to perfection. Say goodbye to guesswork and hello to smoother, more efficient operations. Download Optimum Angle today and experience the power of precision in the palm of your hand!

Screenshots

Gyraline4 screens
Optimum Angle4 screens

Verdict

The call

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.

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

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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

Scorecard6 real differences · 4 level
Gyraline versus Optimum Angle: the parameters behind the verdict, then further details
ParameterGyralineOptimum Angle
PriceFree — better$3.99
Rating3.8 (99 ratings)5.0 (1 ratings) — better
Positive reviews61.4% of reviews100.0% of reviews — better
Number of ratings99 — better1
Update frequencyFortnightly — betterEvery 6 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015
Further details — not scored
Size63 MB93 MB
Age rating4+4+
DeveloperMechly LLCJohn Dickinson

Customer experience

Gyraline

All ratings99 ratings
Positive66.7%
Neutral5.1%
Negative28.3%
Written reviews83 reviews
Positive61.4%
Neutral7.2%
Negative31.3%

Optimum Angle

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Gyraline

Reported bugs

16 issues
  • Inconsistent measurements
  • App crashes
  • Sensor axis reversed (G2)
  • Accuracy defaults revert to 0.10°
  • Camber tool unreliable
Show 11 more
  • Manual/videos do not match current app design
  • Front toe readings inaccurate after update
  • Body align function removed for G1
  • Surface profile percentage not visible
  • Buggy app renders G2 unusable
  • Previous update was better, new update makes it impossible to get accurate results
  • G1 owners don't get vehicle spec access
  • Body alignment of front toe removed
  • Front toe readings inaccurate
  • App requires refresh with red screen when moving to front wheel
  • Inconsistent readings even after adjustments

Requested features

7 requests
  • 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
Show 2 more
  • Update tutorials to match current app version
  • Dark mode text display fix

Optimum Angle

Not enough reviews yet to summarise bugs or requests.

In-app purchases

9 purchases

Gyraline

Subscriptions3
  • Gyraline DIY One Week3 Days trial$7.997 Days
  • Gyraline DIY One Month$9.991 Month
  • Quick Check Single Device1 Month trial$99.991 Month
One-time6
  • TrialFree
  • Single Token Purchase$0.99
  • Five Token Purchase$3.99
Show 3 more
  • Weekend Pass$5.99
  • One Time Subscription$69.99
  • Gyraline Pro$399.99
None

Optimum Angle

No in-app purchases

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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