# Clean Power VFD vs Maintenance Tracker

The clearest difference is in-app purchases: Clean Power VFD at none against Maintenance Tracker's 1. Clean Power VFD also leads on ads (none vs shown). Maintenance Tracker's advantage is iOS requirement (13.0 vs 15.1). On price, update cadence and device support there is nothing between them.

Both are free to download. Maintenance Tracker sells 1 one-off in-app purchase. Clean Power VFD asks for nothing beyond the download.

Clean Power VFD ships an update every 5 weeks, Maintenance Tracker every 3 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | Clean Power VFD | Maintenance Tracker |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Size | 67 MB | 54 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SmartD Technologies Inc.](https://appshunter.io/developer/1539682333) | [Ryan Knisley](https://appshunter.io/developer/1867434341) |

## What reviewers say

### Clean Power VFD

[App page](https://appshunter.io/ios/app/clean-power-vfd/id1539682331)

**Features:** Vision Pro support

**In-app purchases:** none


### Maintenance Tracker

[App page](https://appshunter.io/ios/app/maintenance-tracker/id6757522265)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is Clean Power VFD free?

Clean Power VFD is free to download, with no in-app purchases.

### Is Maintenance Tracker free?

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

### Do Clean Power VFD or Maintenance Tracker have ads?

Maintenance Tracker shows ads; Clean Power VFD does not.

### Which is updated more often, Clean Power VFD or Maintenance Tracker?

Clean Power VFD ships an update every 5 weeks, and Maintenance Tracker every 3 weeks. Most recently, Clean Power VFD was updated on October 24, 2026 and Maintenance Tracker on October 24, 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.*