# Pre vs Energy Auditor Mobile

The clearest difference is in-app purchases: Pre at none against Energy Auditor Mobile's 1. Pre also leads on iOS requirement (13.0 vs 15.1). Energy Auditor Mobile's advantage is update cadence (daily vs every 7 months). On price, ads and device support there is nothing between them.

Both are free to download. Energy Auditor Mobile sells 1 in-app purchase, starting at $5.99 per month. Pre asks for nothing beyond the download.

Pre ships an update every 7 months, Energy Auditor Mobile daily. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Pre | Energy Auditor Mobile |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pre-alignment/id1499479273/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Daily** |
| Monetization | Free | — |
| Size | 67 MB | 32 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ACOEM Group](https://appshunter.io/developer/1495816959) | [Kirk May](https://appshunter.io/developer/1834381707) |

## What reviewers say

### Pre

[App page](https://appshunter.io/ios/app/pre-alignment/id1499479273)

This app guides users through pre-alignment tasks using a connected Bluetooth probe. It allows measurement and recording of run-out, bearing clearance, and soft foot, with the ability to generate instant PDF reports.

**Highlights:** Bluetooth connectivity, Icon-based adaptive user interface, Measure and record Run-Out, Measure and record Bearing Clearance, Measure and record True SoftCheck, Generate instant PDF reports

**Features:** macOS Compatibility

**In-app purchases:** none


### Energy Auditor Mobile

[App page](https://appshunter.io/ios/app/energy-auditor-mobile/id6751273080)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Energy Auditor App Monthly | $5.99 | per month |


## Frequently asked questions

### Is Pre free?

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

### Is Energy Auditor Mobile free?

Energy Auditor Mobile is free to download, with in-app purchases available.

### Do Pre or Energy Auditor Mobile have ads?

Neither Pre nor Energy Auditor Mobile shows ads.

### Which is updated more often, Pre or Energy Auditor Mobile?

Pre ships an update every 7 months, and Energy Auditor Mobile daily. Most recently, Pre was updated on October 24, 2026 and Energy Auditor Mobile on October 25, 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.*