Battery Test vs Gyraline
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Battery Test
This app, paired with specific hardware testers, provides quick health checks for vehicle batteries and electrical systems. It allows technicians to view accurate test results and understand the condition of batteries, starters, and generators.
- Vehicle battery health check
- Electrical system testing
- Starter and generator analysis
- Accurate test result viewing
- Hardware tester integration
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The Battery Test app, together with the lightweight battery and electrical system tester BT508,BT506 or BT1 Lite provides a quick health check of the vehicle’s battery and electrical systems. This free and easy-to-use mobile app enables technicians to view more accurate test results and learn about the true health of their batteries, starters and generators.
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.
- Precision 4-wheel alignment
- Measure total toe (front & rear)
- Thrust line comparison
- Camber measurement and adjustment
- Caster sweep
- Ackermann visualization
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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.
Screenshots
Verdict
The clearest difference is review sentiment: Gyraline at 61% against Battery Test's 0%. Gyraline also leads on rating (3.8 vs 2.1) and update cadence (fortnightly vs every 2 months). Battery Test's advantage is monetization model (free with in-app purchases vs paid) and iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and device support 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
Both are free to download. Battery Test sells 10 one-off in-app purchases and Gyraline sells 3 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Gyraline holds the better App Store score, 3.8 against 2.1. That said, the two scores are not equally well evidenced: Gyraline has 102 ratings behind it against 20, so its average is the more settled of the two. Written reviews point the same way: 0% of Battery Test's written reviews are positive against 61% of Gyraline's.
Battery Test ships an update every 2 months, Gyraline fortnightly. The most recent releases landed on November 4, 2026 and November 3, 2026 respectively.
| Parameter | Battery Test | Gyraline |
|---|---|---|
| Price | Free | Free |
| Rating | 2.1 (20 ratings) | 3.8 (102 ratings) — better |
| Positive reviews | 0.0% of reviews | 60.7% of reviews — better |
| Number of ratings | 20 | 102 — better |
| Update frequency | Every 2 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 108 MB | 63 MB |
| Age rating | 4+ | 4+ |
| Developer | Autel Intelligent Technology Co., Ltd. | Mechly LLC |
Customer experience
Battery Test
Gyraline
Bugs and requests
Battery Test
Not enough reviews yet to summarise bugs or 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 moreShow fewer
- 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 moreShow fewer
- Update tutorials to match current app version
- Dark mode text display fix
In-app purchases
Battery Test
- Benz$12.99
- Bmw$12.99
- Dodge$12.99
Show 7 moreShow fewer
- Ford$12.99
- GM$12.99
- Honda$12.99
- Kia$12.99
- Nissan$12.99
- Chrysler$12.99
- VolksWagen$12.99
Gyraline
- 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
Questions
Is Battery Test free?
Is Gyraline free?
Which has better reviews, Battery Test or Gyraline?
Do Battery Test or Gyraline have ads?
Which is updated more often, Battery Test or Gyraline?
Other comparisons
