# ThunderNotes vs Permission Slip

The clearest difference is in-app purchases: Permission Slip at none against ThunderNotes's 5. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. ThunderNotes sells 5 in-app purchases, starting at $2.99 per 7 days. Permission Slip asks for nothing beyond the download.

ThunderNotes ships an update every 5 days, Permission Slip every 9 days. The most recent releases landed on October 30, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | ThunderNotes | Permission Slip |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (3 ratings)](https://appshunter.io/ios/app/thundernotes-ai-note-taker/id6740700749/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 9 days |
| Monetization | Freemium | — |
| Size | 47 MB | 26 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Emir Topaloglu](https://appshunter.io/developer/1656595671) | [Supersuit Technologies LLC](https://appshunter.io/developer/1891077839) |

## What reviewers say

### ThunderNotes

[App page](https://appshunter.io/ios/app/thundernotes-ai-note-taker/id6740700749)

Transform voice recordings, documents, and YouTube videos into searchable AI notes. Generate summaries, quizzes, and flashcards instantly to enhance learning and productivity. No account is required, offering a private and distraction-free experience.

**Highlights:** AI voice transcription, YouTube video summarizer, PDF and image to notes conversion, AI-generated quizzes, Smart flashcards, Chat with your notes

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $2.99 | per 7 days |
| Thunder Pro | $4.99 | per month |
| Monthly Premium | $6.99 | per month |
| Thunder Pro | $49.99 | per year |
| Annually Premium | $69.99 | per year |


### Permission Slip

[App page](https://appshunter.io/ios/app/permission-slip/id6761718603)

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

**In-app purchases:** none


## Frequently asked questions

### Is ThunderNotes free?

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

### Is Permission Slip free?

Permission Slip is free to download, with no in-app purchases.

### Do ThunderNotes or Permission Slip have ads?

Neither ThunderNotes nor Permission Slip shows ads.

### Which is updated more often, ThunderNotes or Permission Slip?

ThunderNotes ships an update every 5 days, and Permission Slip every 9 days. Most recently, ThunderNotes was updated on October 30, 2026 and Permission Slip on November 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.*