# Firefly Reliability App vs Lubrication App

The clearest difference is iOS requirement: Firefly Reliability App at 13.0 against Lubrication App's 15.5. 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.

Firefly Reliability App ships an update every 3 weeks, Lubrication App fortnightly. The most recent releases landed on September 17, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Firefly Reliability App | Lubrication App |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Size | 35 MB | 79 MB |
| Requires iOS | **13.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Lars Hovden](https://appshunter.io/developer/1584594317) | [perma-tec GmbH & Co. KG](https://appshunter.io/developer/1095610140) |

## What reviewers say

### Firefly Reliability App

[App page](https://appshunter.io/ios/app/firefly-reliability-app/id1584594315)

**Features:** macOS Compatibility

**In-app purchases:** none


### Lubrication App

[App page](https://appshunter.io/ios/app/lubrication-app/id6446679224)

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

**In-app purchases:** none


## Frequently asked questions

### Is Firefly Reliability App free?

Firefly Reliability App is free to download, with no in-app purchases.

### Is Lubrication App free?

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

### Do Firefly Reliability App or Lubrication App have ads?

Neither Firefly Reliability App nor Lubrication App shows ads.

### Which is updated more often, Firefly Reliability App or Lubrication App?

Firefly Reliability App ships an update every 3 weeks, and Lubrication App fortnightly. Most recently, Firefly Reliability App was updated on September 17, 2026 and Lubrication App on September 8, 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.*