DuoCards vs Unstoppable Influence
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DuoCards
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.
- 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
Read full descriptionHide full description
Build vocabulary from the real content you already enjoy. DuoCards helps you save new words from videos, articles, shared decks, and your own notes, then remember them with smart flashcards and spaced repetition. Why learners choose DuoCards: - Save words and phrases from videos, subtitles, and articles - Practice with an AI tutor for real-life conversations - Improve pronunciation with instant feedback - Review vocabulary with flashcards that adapt to your progress - Learn English, Spanish, French, German, Japanese, Korean, and 50+ languages - Use ready-made courses, public decks, or your own personal word lists Learn in a simple loop: 1. Discover useful words in context 2. Save them to your personal deck 3. Review, speak, listen, and remember Whether you are learning for travel, school, work, or everyday conversations, DuoCards gives you a flexible way to build vocabulary and keep it in memory. Download DuoCards and start building your language habit today. Terms of use: https://www.duocards.com/termsofuse.html Privacy policy: https://www.duocards.com/privacypolicy.html
Unstoppable Influence
Read full descriptionHide full description
Boost your confidence, shift your mindset, and achieve your goals with the Unstoppable Influence App. Your journey starts here!
Screenshots
Verdict
The clearest difference is in-app purchases: Unstoppable Influence at none against DuoCards's 11. Unstoppable Influence also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. DuoCards sells 10 in-app purchases, starting at $19.99 per month. Unstoppable Influence asks for nothing beyond the download.
DuoCards ships an update monthly, Unstoppable Influence every 2 months. The most recent releases landed on October 24, 2026 and October 16, 2026 respectively.
| Parameter | DuoCards | Unstoppable Influence |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (1.4K ratings) — better | — |
| Positive reviews | 63.1% of reviews | — |
| Number of ratings | 1.4K — better | — |
| Update frequency | Monthly — better | Every 2 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 13.0 |
| Further details — not scored | ||
| Size | 19 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | DuoCards s.r.o | Unstoppable 365MFR Inc |
Bugs and requests
DuoCards
Reported bugs
4 issues- 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
4 requests- Offline mode
- More customization options
- Improved spaced repetition system
- Better integration with other language learning tools
Unstoppable Influence
Not enough reviews yet to summarise bugs or requests.
In-app purchases
DuoCards
- DuoCards Premium2 variants$19.991 Month
- DuoCards Plus$33.003 Months
- DuoCards Premium$34.993 Months
Show 7 moreShow fewer
- DuoCards Premium$49.991 Year
- DuoCards Premium7 Days trial$64.901 Year
- DuoCards Premium7 Days trial$67.991 Year
- DuoCards Premium1 Year trial$107.991 Year
- DuoCards Premium7 Days trial$109.001 Year
- DuoCards Premium7 Days trial$113.991 Year
- DuoCards Premium1 Year trial$162.991 Year
Unstoppable Influence
No in-app purchases
Questions
Is DuoCards free?
Is Unstoppable Influence free?
Do DuoCards or Unstoppable Influence have ads?
Which is updated more often, DuoCards or Unstoppable Influence?
Other comparisons
