# Battery Test vs Gyraline

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.

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.

## The numbers

| Metric | Battery Test | Gyraline |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.1 (20 ratings)](https://appshunter.io/ios/app/battery-test/id1531831437/reviews) | **[3.8 (102 ratings)](https://appshunter.io/ios/app/gyraline/id6450752768/reviews)** |
| Number of ratings | 20 | **102** |
| Positive reviews | 0.0% of reviews | **60.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 108 MB | 63 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Autel Intelligent Technology Co., Ltd.](https://appshunter.io/developer/770747094) | [Mechly LLC](https://appshunter.io/developer/1694760852) |

## What reviewers say

### Battery Test

[App page](https://appshunter.io/ios/app/battery-test/id1531831437)

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.

**Highlights:** Vehicle battery health check, Electrical system testing, Starter and generator analysis, Accurate test result viewing, Hardware tester integration

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Benz | $12.99 | one-time |
| Bmw | $12.99 | one-time |
| Dodge | $12.99 | one-time |
| Ford | $12.99 | one-time |
| GM | $12.99 | one-time |
| Honda | $12.99 | one-time |
| Kia | $12.99 | one-time |
| Nissan | $12.99 | one-time |
| Chrysler | $12.99 | one-time |
| VolksWagen | $12.99 | one-time |


### 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 (3)**

| 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 |

**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 Battery Test free?

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

### Is Gyraline free?

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

### Which has better reviews, Battery Test or Gyraline?

Gyraline is rated higher. Battery Test averages 2.1 out of 5 from 20 ratings, while Gyraline averages 3.8 from 102 ratings.

### Do Battery Test or Gyraline have ads?

Neither Battery Test nor Gyraline shows ads.

### Which is updated more often, Battery Test or Gyraline?

Battery Test ships an update every 2 months, and Gyraline fortnightly. Most recently, Battery Test was updated on November 4, 2026 and Gyraline on November 3, 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.*