# StudyMate AI NotebookLM, Notes vs Quantum Retriever

The clearest difference is update cadence: Quantum Retriever at every 9 days against StudyMate AI NotebookLM, Notes's every 4 weeks. Quantum Retriever also leads on iOS requirement (15.1 vs 18.0). 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.

StudyMate AI NotebookLM, Notes ships an update every 4 weeks, Quantum Retriever every 9 days. The most recent releases landed on September 3, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | StudyMate AI NotebookLM, Notes | Quantum Retriever |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/studymate-ai-notebooklm-notes/id6747303987/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 9 days** |
| Monetization | Free | — |
| Size | 11 MB | 27 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Hyeongwoo Choi](https://appshunter.io/developer/1614205706) | [James Beach](https://appshunter.io/developer/1879362223) |

## What reviewers say

### StudyMate AI NotebookLM, Notes

[App page](https://appshunter.io/ios/app/studymate-ai-notebooklm-notes/id6747303987)

This intelligent study app uses AI to help you organize and summarize notes from lectures, meetings, PDFs, and web content. Enhance your learning efficiency and retention with smart summarization and note enhancement features.

**Highlights:** AI-powered note taking, Comprehensive PDF management, Smart summarization, Enhanced study notes, Organize learning materials, Maximize learning efficiency

**Features:** macOS Compatibility

**In-app purchases:** none


### Quantum Retriever

[App page](https://appshunter.io/ios/app/quantum-retriever/id6759576344)

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

**In-app purchases:** none


## Frequently asked questions

### Is StudyMate AI NotebookLM, Notes free?

StudyMate AI NotebookLM, Notes is free to download, with no in-app purchases.

### Is Quantum Retriever free?

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

### Do StudyMate AI NotebookLM, Notes or Quantum Retriever have ads?

Neither StudyMate AI NotebookLM, Notes nor Quantum Retriever shows ads.

### Which is updated more often, StudyMate AI NotebookLM, Notes or Quantum Retriever?

StudyMate AI NotebookLM, Notes ships an update every 4 weeks, and Quantum Retriever every 9 days. Most recently, StudyMate AI NotebookLM, Notes was updated on September 3, 2026 and Quantum Retriever on September 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.*