# Reading Diary vs Ondelia

The clearest difference is in-app purchases: Ondelia at none against Reading Diary's 1. Ondelia also leads on update cadence (every 4 days vs every 2 months). Reading Diary's advantage is iOS requirement (15.6 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Reading Diary sells 1 one-off in-app purchase. Ondelia asks for nothing beyond the download.

Reading Diary ships an update every 2 months, Ondelia every 4 days. The most recent releases landed on November 3, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Reading Diary | Ondelia |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/reading-diary-book-tracker/id1551851756/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | Freemium | — |
| Size | 61 MB | 27 MB |
| Requires iOS | **15.6** | 26.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Zdenek Skrobak](https://appshunter.io/developer/1551851758) | [Jonathan Jayet](https://appshunter.io/developer/6809228482) |

## What reviewers say

### Reading Diary

[App page](https://appshunter.io/ios/app/reading-diary-book-tracker/id1551851756)

Easily track your personal library, log your reading progress, and organize your books. Scan ISBNs or barcodes to add titles, manage reading status, and view detailed statistics. Offers a free version with core features and an optional one-time premium upgrade for advanced organization and customization.

**Highlights:** Scan ISBN or barcode to add books, Track reading status and dates, Organize books by shelves and custom tags, View detailed reading statistics, Sync data across devices, Manual book detail entry

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $8.19 | one-time |


### Ondelia

[App page](https://appshunter.io/ios/app/ondelia/id6809228480)

**Features:** macOS Compatibility, Siri integration, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Reading Diary free?

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

### Is Ondelia free?

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

### Do Reading Diary or Ondelia have ads?

Neither Reading Diary nor Ondelia shows ads.

### Which is updated more often, Reading Diary or Ondelia?

Reading Diary ships an update every 2 months, and Ondelia every 4 days. Most recently, Reading Diary was updated on November 3, 2026 and Ondelia on November 6, 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.*