# Lippert Diagnostics vs STL by SkillAbove

The clearest difference is update cadence: STL by SkillAbove at every 9 days against Lippert Diagnostics's every 3 months. STL by SkillAbove also leads on 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. Neither carries in-app purchases, so what you see is what you pay.

Lippert Diagnostics ships an update every 3 months, STL by SkillAbove every 9 days. The most recent releases landed on October 25, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Lippert Diagnostics | STL by SkillAbove |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 9 days** |
| Size | 328 MB | 34 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Lippert Components, Inc.](https://appshunter.io/developer/867023615) | [Diego Gentner](https://appshunter.io/developer/1686293703) |

## What reviewers say

### Lippert Diagnostics

[App page](https://appshunter.io/ios/app/lippert-diagnostics/id6446602025)

**Features:** Vision Pro support

**In-app purchases:** none


### STL by SkillAbove

[App page](https://appshunter.io/ios/app/stl-by-skillabove/id6451347520)

**In-app purchases:** none


## Frequently asked questions

### Is Lippert Diagnostics free?

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

### Is STL by SkillAbove free?

STL by SkillAbove is free to download, with no in-app purchases.

### Do Lippert Diagnostics or STL by SkillAbove have ads?

Neither Lippert Diagnostics nor STL by SkillAbove shows ads.

### Which is updated more often, Lippert Diagnostics or STL by SkillAbove?

Lippert Diagnostics ships an update every 3 months, and STL by SkillAbove every 9 days. Most recently, Lippert Diagnostics was updated on October 25, 2026 and STL by SkillAbove on October 9, 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.*