# DuoCards vs Предание

The clearest difference is in-app purchases: Предание at none against DuoCards's 10. Предание also leads on ads (none vs shown) and rating (5.0 vs 4.7). DuoCards's advantage is ratings volume (1.5K vs 1) and update cadence (monthly vs every 6 months). On price and device support there is nothing between them.

Both are free to download. DuoCards sells 9 in-app purchases, starting at $19.99 per month. Предание asks for nothing beyond the download.

Предание holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: DuoCards has 1.5K ratings behind it against 1, so its average is the more settled of the two.

DuoCards ships an update monthly, Предание every 6 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | DuoCards | Предание |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (1.5K ratings)](https://appshunter.io/ios/app/duocards-vocabulary-builder/id1508159917/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/id6503428047/reviews)** |
| Number of ratings | **1.5K** | 1 |
| Positive reviews | 63.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 6 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 19 MB | 27 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DuoCards s.r.o](https://appshunter.io/developer/1508159916) | [Fond Predanie](https://appshunter.io/developer/1245124222) |

## What reviewers say

### DuoCards

[App page](https://appshunter.io/ios/app/duocards-vocabulary-builder/id1508159917)

Master a new language with interactive flashcards and video courses. This app helps you build vocabulary, guess words, and track your progress across over 50 languages. Learn effectively through spaced repetition and integrated translation tools.

**Highlights:** Flashcard learning with spaced repetition, Video language courses with interactive subtitles, Integrated translator for over 50 languages, Vocabulary builder and progress tracker, Guess words and phrases to sharpen skills, Read foreign language articles

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DuoCards Premium | $19.99 | per month |
| DuoCards Plus | $33.00 | per 3 months |
| DuoCards Premium | $34.99 | per 3 months |
| DuoCards Premium | $64.90 | per year |
| DuoCards Premium | $67.99 | per year |
| DuoCards Premium | $107.99 | per year |
| DuoCards Premium | $109.00 | per year |
| DuoCards Premium | $113.99 | per year |
| DuoCards Premium | $162.99 | per year |

**What reviewers like**

- 👍 Easy to use
- 💡 Customizable flashcards
- 🚀 Efficient learning algorithm
- 🐘 Cute mascot (Memo the mammoth)

**What reviewers complain about**

- 🐛 Bugs and crashes
- ⚠️ Unreliable server connection
- 💰 Expensive subscription
- 🤔 Confusing interface

**Reported bugs**

- App freezes and crashes
- Issues with logging in and accessing content
- Inconsistent behavior when adding new words
- Problems with video playback and subtitles

**Requested features**

- Offline mode
- More customization options
- Improved spaced repetition system
- Better integration with other language learning tools


### Предание

[App page](https://appshunter.io/ios/app/id6503428047)

Access a vast library of audiobooks, lectures, sermons, and chants from the Predanie.ru website. Download and listen to religious content on the go, all for free. Share your feedback to help improve the app.

**Highlights:** Extensive audio library, Lectures and sermons, Audiobooks and chants, Free downloads, Offline listening, Easy navigation

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DuoCards free?

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

### Is Предание free?

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

### Which has better reviews, DuoCards or Предание?

Предание is rated higher. DuoCards averages 4.7 out of 5 from 1.5K ratings, while Предание averages 5.0 from 1 ratings.

### Do DuoCards or Предание have ads?

DuoCards shows ads; Предание does not.

### Which is updated more often, DuoCards or Предание?

DuoCards ships an update monthly, and Предание every 6 months. Most recently, DuoCards was updated on November 3, 2026 and Предание on October 30, 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.*