# Librarius vs UnderBooks

The clearest difference is review sentiment: UnderBooks at 76% against Librarius's 41%. UnderBooks also leads on rating (4.8 vs 4.6). Librarius's advantage is ads (none vs shown) and ratings volume (191 vs 18). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Librarius sells 13 in-app purchases, starting at $4.99 per month and UnderBooks sells 10 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UnderBooks holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: Librarius has 191 ratings behind it against 18, so its average is the more settled of the two. Written reviews point the same way: 41% of Librarius's written reviews are positive against 76% of UnderBooks's.

Librarius ships an update every 2 weeks, UnderBooks monthly. The most recent releases landed on September 26, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | Librarius | UnderBooks |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (191 ratings)](https://appshunter.io/ios/app/librarius/id1552376092/reviews) | **[4.8 (18 ratings)](https://appshunter.io/ios/app/underbooks/id1670343606/reviews)** |
| Number of ratings | **191** | 18 |
| Positive reviews | 40.8% of reviews | **76.5% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 weeks** | Monthly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 57 MB | 84 MB |
| Requires iOS | 16.0 | **15.6** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Librarius TOV](https://appshunter.io/developer/1552376094) | [Hryhorii Cherkaskyi](https://appshunter.io/developer/1670343608) |

## What reviewers say

### Librarius

[App page](https://appshunter.io/ios/app/librarius/id1552376092)

Access a vast digital library of Ukrainian e-books and audiobooks. Rent, buy, or read thousands of titles for free. Enjoy offline reading, personalized lists, and advanced search features.

**Highlights:** Offline reading, Book rental and purchase, Personalized wishlists, Advanced search and filters, Free preview of book content, Customizable reading settings

**Features:** macOS Compatibility

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Місячна підписка | $4.99 | per month |
| Місячна преміум підписка | $5.99 | per month |
| 3-місячна підписка | $13.49 | per 3 months |
| 6-місячна підписка | $23.99 | per 6 months |
| 6-місячна преміум підписка | $24.99 | per 6 months |
| Книжка | $0.99 | one-time |
| Книжка | $1.99 | one-time |
| Книжка | $2.99 | one-time |
| Книжка | $3.99 | one-time |
| Книжка | $4.99 | one-time |
| Книжка | $5.99 | one-time |
| Книжка | $6.99 | one-time |
| Книжка | $7.99 | one-time |

**What reviewers like**

- 📚 Good selection of Ukrainian books
- 💰 Affordable subscription/rental options
- ❤️ Supports Ukrainian authors/content
- 👍 Easy to use Apple Pay
- 🗣️ Audiobooks read by humans

**What reviewers complain about**

- 🚫 Books not accessible offline
- 🐛 Frequent app crashes/freezes
- 🔄 Constant logouts/re-authentication
- 📉 Lost reading progress after updates/logouts
- 📱 Poor iPad/tablet optimization

**Reported bugs**

- App crashes frequently
- Audiobooks not saving progress
- App logs out users constantly
- Reading progress lost after updates
- Books not opening/showing errors

**Requested features**

- Add dark mode option
- Expand collection of Ukrainian authors
- Improve iPad/tablet adaptation
- Add ability to highlight and save quotes
- Implement progress bar/percentage read


### UnderBooks

[App page](https://appshunter.io/ios/app/underbooks/id1670343606)

Discover a curated collection of Ukrainian audiobooks featuring classic and contemporary authors. Enjoy professionally narrated literary works and unique illustrations, perfect for busy individuals seeking quality literature on the go.

**Highlights:** Ukrainian audiobooks, Classic and contemporary literature, Professional narration, Original illustrations, Curated literary collection, Offline listening

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| UnderBooks Pro 1 Week | $2.99 | per 7 days |
| UnderBooks Pro | $7.99 | per month |
| UnderBooks Pro 6 months | $12.99 | per 6 months |
| UnderBooks Pro Annual | $24.99 | per year |
| UnderBook "Medium" | $2.99 | one-time |
| UnderBook "Big" | $3.99 | one-time |
| UnderBook "Big+" | $5.99 | one-time |
| 1 month subscription | $7.99 | one-time |
| Підписка на 6 місяців | $12.99 | one-time |
| 1 year subscription | $24.99 | one-time |


## Frequently asked questions

### Is Librarius free?

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

### Is UnderBooks free?

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

### Which has better reviews, Librarius or UnderBooks?

UnderBooks is rated higher. Librarius averages 4.6 out of 5 from 191 ratings, while UnderBooks averages 4.8 from 18 ratings.

### Do Librarius or UnderBooks have ads?

UnderBooks shows ads; Librarius does not.

### Which is updated more often, Librarius or UnderBooks?

Librarius ships an update every 2 weeks, and UnderBooks monthly. Most recently, Librarius was updated on September 26, 2026 and UnderBooks on September 7, 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.*