# StoneNote vs A2A Authenticator

The clearest difference is in-app purchases: A2A Authenticator at none against StoneNote's 1. A2A Authenticator also leads on iOS requirement (12.0 vs 16.0). On price, ads and device support there is nothing between them.

Both are free to download. StoneNote sells 1 one-off in-app purchase. A2A Authenticator asks for nothing beyond the download.

## The numbers

| Metric | StoneNote | A2A Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (5 ratings)](https://appshunter.io/ios/app/stonenote-video-study-notes/id6479307006/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 10 days | — |
| Monetization | Free with in-app purchases | — |
| Size | 43 MB | 27 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [斯熠 巩](https://appshunter.io/developer/1735501144) | [Jupiter System & Solution](https://appshunter.io/developer/1397216911) |

## What reviewers say

### StoneNote

[App page](https://appshunter.io/ios/app/stonenote-video-study-notes/id6479307006)

Seamlessly take handwritten notes while watching study videos on the same page. This app integrates a video player directly into your notes, allowing for automatic pausing, screenshot capture, and video bookmarking. Organize your work with layered notes and folders, and sync across devices.

**Highlights:** Integrated video player within notes, Automatic video pause while writing, Screenshot capture and insertion, Layered notes support, Folder-based organization, iCloud sync

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| StoneNote Pro | $4.99 | one-time |


### A2A Authenticator

[App page](https://appshunter.io/ios/app/a2a-authenticator/id6744716942)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is StoneNote free?

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

### Is A2A Authenticator free?

A2A Authenticator is free to download, with no in-app purchases.

### Do StoneNote or A2A Authenticator have ads?

Neither StoneNote nor A2A Authenticator shows ads.

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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.*