# OVB Multi Factor Authenticator vs Deepen

The clearest difference is in-app purchases: OVB Multi Factor Authenticator at none against Deepen's 3. Deepen's advantage is update cadence (every 4 days vs every 9 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Deepen sells 3 in-app purchases, starting at $6.99 per 7 days. OVB Multi Factor Authenticator asks for nothing beyond the download.

OVB Multi Factor Authenticator ships an update every 9 months, Deepen every 4 days. The most recent releases landed on October 3, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | OVB Multi Factor Authenticator | Deepen |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/deepen-book-notes-by-voice/id6780666477/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 4 days** |
| Monetization | — | Freemium |
| Size | 57 MB | 16 MB |
| Requires iOS | 17.5 | **17.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [OVB Holding AG](https://appshunter.io/developer/935220572) | [Francois Sempe](https://appshunter.io/developer/1887391018) |

## What reviewers say

### OVB Multi Factor Authenticator

[App page](https://appshunter.io/ios/app/ovb-multi-factor-authenticator/id6471665948)

**Features:** macOS Compatibility

**In-app purchases:** none


### Deepen

[App page](https://appshunter.io/ios/app/deepen-book-notes-by-voice/id6780666477)

Transform passive reading into active learning by speaking your thoughts aloud. This app creates a personal knowledge map from your spoken insights, connecting ideas across all the books you read. It helps you remember what you've learned and query your own reading history.

**Highlights:** Log pages read and track progress, Answer spoken questions about content, Generate concept maps from spoken answers, Connect ideas across multiple books, Query your personal reading library, Save lookup words and memorable passages, Import Goodreads shelves

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Weekly | $6.99 | per 7 days |
| Pro Annual | $49.99 | per year |
| Pro Annual | $79.99 | per year |


## Frequently asked questions

### Is OVB Multi Factor Authenticator free?

OVB Multi Factor Authenticator is free to download, with no in-app purchases.

### Is Deepen free?

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

### Do OVB Multi Factor Authenticator or Deepen have ads?

Neither OVB Multi Factor Authenticator nor Deepen shows ads.

### Which is updated more often, OVB Multi Factor Authenticator or Deepen?

OVB Multi Factor Authenticator ships an update every 9 months, and Deepen every 4 days. Most recently, OVB Multi Factor Authenticator was updated on October 3, 2026 and Deepen on October 5, 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.*