RAIO App vs World Crowns
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RAIO App
This app uses spaced repetition technology and real-life sentences to help you learn grammar and vocabulary in context. It aims to improve retention, reduce translation in your head, and help you start thinking in the language you're learning.
- Spaced repetition technology
- Sentence-based learning
- Learn grammar and vocabulary in context
- Reduce translation in your head
- Think in the target language
- Personalized progress reports
- Gamification features
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RAIO is a language learning mobile app that allows language learners to review sentences using the power of spaced repetition technology. With RAIO, learners can effortlessly learn grammar and vocabulary at the same time, without having to study complex grammar rules or do boring grammar drills. The app is designed to help learners stop forgetting and getting stuck in conversations having to translate in their as much as they would when learning with traditional method. The app’s sentence-based approach is another key feature that sets RAIO apart from traditional language learning methods. Rather than teaching using isolated vocabulary words or abstract grammar rules, RAIO uses real-life sentences that are commonly used in everyday conversations. This approach allows learners to acquire vocabulary and grammar in context, which enhances their understanding of the language and improves their ability to communicate effectively. Spaced repetition, the underlying technology of RAIO’s language learning app, is a technique used by professional language learners and polyglots to acquire languages faster and with less effort. This method of learning is based on the principle of spacing out the review of previously learned material to optimize long-term retention. By scheduling review sessions based on the user’s progress and difficulty level, RAIO’s spaced repetition technology allows learners to remember words and grammar structures better and for longer periods of time, leading to a faster and more effective language learning experience, regardless of which proficiency level they start with. Another benefit of using RAIO is that learners can slowly start to think in the language. By reviewing sentences in context and focusing on the meaning rather than the individual words or rules, learners can internalize the language and start to think in it. This improves their ability to communicate effectively and increases their fluency in the language. In summary, RAIO is an innovative mobile app that revolutionizes language learning with its spaced repetition technology and sentence-based approach. The app’s features, such as its review system, audio recordings, translations in multiple languages, personalized progress reports, and gamification features, enhance the learning experience and provide learners with motivation and a sense of accomplishment. By using RAIO, learners can effortlessly learn grammar and vocabulary, stop forgetting as much, stop getting stuck in conversations having to translate in their head as much, and slowly start to think in the language. Terms of Use: https://kaleanders.com/raio-app-terms
World Crowns
Access a mobile learning platform with audios, videos, and virtual/livestream trainings to supplement your education. Purchase tickets to major live events to network with other business owners and learn from industry leaders.
- Audios, videos, virtual & livestream trainings
- Mobile learning platform
- Tickets to major live events
- Networking with business owners
- Content from industry leaders
- Extra features and tools
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Learn on the Go • Have a mobile platform to supplement your learning designed around your busy life and schedule with: Audios, Videos, Virtual & Livestream trainings. Learn Live • Get tickets to our Major Events from your device! At our Live Events you can associate with other like-minded business owners. Who says learning can’t be fun?! Learn From Leaders • Accelerate your growth and achieve excellence with content from Leaders committed to your success! Plus extra features and tools all in one spot!
Screenshots
Verdict
The clearest difference is review sentiment: World Crowns at 96% against RAIO App's 20%. World Crowns also leads on rating (4.9 vs 2.7) and in-app purchases (none vs 2). On price, ratings volume, update cadence and ads 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. RAIO App sells 2 in-app purchases, starting at $19.99 per month. World Crowns asks for nothing beyond the download.
World Crowns holds the better App Store score, 4.9 against 2.7. Both are backed by a comparable volume of ratings — 42 and 66 respectively. Written reviews point the same way: 20% of RAIO App's written reviews are positive against 96% of World Crowns's.
Both ship on a similar rhythm, roughly every 6 weeks. The most recent releases landed on October 10, 2026 and October 14, 2026 respectively.
| Parameter | RAIO App | World Crowns |
|---|---|---|
| Price | Free | Free |
| Rating | 2.7 (42 ratings) | 4.9 (66 ratings) — better |
| Positive reviews | 20.0% of reviews | 95.8% of reviews — better |
| Number of ratings | 42 | 66 — better |
| Update frequency | Every 6 weeks | Every 6 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 88 MB | 97 MB |
| Age rating | 4+ | 4+ |
| Developer | Kale Anders | World Crowns SRL |
Customer experience
RAIO App
World Crowns
In-app purchases
RAIO App
- Monthly - Standard Plan1 Month trial$19.991 Month
- Annual - SAVE 20%!1 Month trial$179.991 Year
World Crowns
No in-app purchases









