# Lippert Toolbox vs Reference Letter AI

The clearest difference is update cadence: Lippert Toolbox at every 3 weeks against Reference Letter AI's every 3 months. Lippert Toolbox also leads on iOS requirement (13.0 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Lippert Toolbox sells 1 in-app purchase, starting at $8.99 per month and Reference Letter AI sells 4 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Lippert Toolbox ships an update every 3 weeks, Reference Letter AI every 3 months. The most recent releases landed on October 4, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Lippert Toolbox | Reference Letter AI |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 87.5% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | — | Free with in-app purchases |
| Size | 192 MB | 15 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Lippert Inspection GmbH](https://appshunter.io/developer/1812403364) | [TINO RALF STRASSER](https://appshunter.io/developer/1799175197) |

## What reviewers say

### Lippert Toolbox

[App page](https://appshunter.io/ios/app/lippert-toolbox/id6745473361)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Paket | $8.99 | per month |


### Reference Letter AI

[App page](https://appshunter.io/ios/app/reference-letter-ai-decoder/id6747148720)

Decode the hidden meanings in German employment certificates. This AI-powered tool analyzes your work reference, providing an overall grade, phrase explanations, and identifying subtle criticisms. Get suggestions for improvements and understand your rights.

**Highlights:** AI analysis of work certificates, Overall grade and phrase ratings, Identification of hidden criticism, Improvement suggestions, Legal information and correction letter template, OCR for photos, scans, and PDFs, On-device processing for privacy

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Version | $6.99 | per 7 days |
| 1 Token | $8.99 | one-time |
| 5 Tokens | $34.99 | one-time |
| 10 Tokens | $59.99 | one-time |


## Frequently asked questions

### Is Lippert Toolbox free?

Lippert Toolbox is free to download, with in-app purchases available.

### Is Reference Letter AI free?

Reference Letter AI is free to download, with in-app purchases available.

### Do Lippert Toolbox or Reference Letter AI have ads?

Neither Lippert Toolbox nor Reference Letter AI shows ads.

### Which is updated more often, Lippert Toolbox or Reference Letter AI?

Lippert Toolbox ships an update every 3 weeks, and Reference Letter AI every 3 months. Most recently, Lippert Toolbox was updated on October 4, 2026 and Reference Letter AI on October 16, 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.*