# Meter Audit vs SKF Insight™ Rail

The clearest difference is device support: Meter Audit at 3 against SKF Insight™ Rail's 1. Meter Audit also leads on iOS requirement (11.0 vs 15.6). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Meter Audit ships an update every 9 months, SKF Insight™ Rail every 8 months. The most recent releases landed on October 29, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Meter Audit | SKF Insight™ Rail |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 8 months** |
| Size | 85 MB | 21 MB |
| Requires iOS | **11.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [dataVoice International](https://appshunter.io/developer/657407983) | [SKF](https://appshunter.io/developer/472922971) |

## What reviewers say

### Meter Audit

[App page](https://appshunter.io/ios/app/meter-audit/id1132199524)

**Features:** macOS Compatibility

**In-app purchases:** none


### SKF Insight™ Rail

[App page](https://appshunter.io/ios/app/skf-insight-rail/id1259173135)

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

**In-app purchases:** none


## Frequently asked questions

### Is Meter Audit free?

Meter Audit is free to download, with no in-app purchases.

### Is SKF Insight™ Rail free?

SKF Insight™ Rail is free to download, with no in-app purchases.

### Do Meter Audit or SKF Insight™ Rail have ads?

Neither Meter Audit nor SKF Insight™ Rail shows ads.

### Which is updated more often, Meter Audit or SKF Insight™ Rail?

Meter Audit ships an update every 9 months, and SKF Insight™ Rail every 8 months. Most recently, Meter Audit was updated on October 29, 2026 and SKF Insight™ Rail on November 7, 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.*