# Známkulačka vs Reading Diary

The clearest difference is review sentiment: Reading Diary at 80% against Známkulačka's 0%. Reading Diary also leads on update cadence (every 2 months vs every 30 months). Známkulačka's advantage is in-app purchases (none vs 1). On price, ads, device support and iOS requirement there is nothing between them.

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

Známkulačka ships an update every 30 months, Reading Diary every 2 months. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Známkulačka | Reading Diary |
| --- | --- | --- |
| 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 | 0.0% of reviews | **80.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 30 months | **Every 2 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 0 MB | 62 MB |
| Requires iOS | **14.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Pinf s.r.o.](https://appshunter.io/developer/1070216631) | [Zdenek Skrobak](https://appshunter.io/developer/1551851758) |

## What reviewers say

### Známkulačka

[App page](https://appshunter.io/ios/app/znamkulacka/id1453186712)

This app helps students calculate their average grades. It can determine the lowest possible grade to maintain the current average or calculate the grades needed to improve by one level. It's a straightforward tool for academic progress tracking.

**Highlights:** Calculate average grade, Determine lowest possible grade, Calculate grades needed for improvement, Simple interface

**Features:** macOS Compatibility

**In-app purchases:** none


### Reading Diary

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

Organize your personal book collection by tracking, categorizing, and filtering your library. Add books by scanning barcodes or manually entering details. Share your reading progress and book information with friends.

**Highlights:** Track and categorize books, Scan barcodes for easy entry, Manual book detail entry, Filter and sort library, Share book information, Cross-device synchronization, Day/night theme

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

**In-app purchases (1)**

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


## Frequently asked questions

### Is Známkulačka free?

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

### Is Reading Diary free?

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

### Do Známkulačka or Reading Diary have ads?

Neither Známkulačka nor Reading Diary shows ads.

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

Známkulačka ships an update every 30 months, and Reading Diary every 2 months. Most recently, Známkulačka was updated on October 21, 2026 and Reading Diary on October 24, 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.*