WebSky App vs Grader.ai
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
WebSky App
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Important! This app is intended for internal educational purposes only, tickets bookings is only allowed for Barcelona โ Paris route. This app provides the following functionality: โ Booking tickets (check Barcelona โ Paris route) โ Extra services such as seats, luggage, meals, insurance โ Online check-in โ User account: my bookings, personal information, documents, companions โ Fixed price โ Fast filling of passport data with built-in camera โ Frequent-flyer program โ Exchanges and refunds โ Push notifications
Grader.ai
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Millions of people retake IELTS every year. Most fail not because they don't study โ but because they never get real feedback. Features: - IELTS Speaking practice with recordings, transcripts, and feedback - IELTS Writing practice with task-focused suggestions - Reading and Listening practice flows - Progress tracking and study recommendations - Premium subscription for unlimited practice and full feedback Subscription prices and renewal periods are shown in the app before purchase and are loaded from App Store product metadata. Subscriptions are purchased through Apple In-App Purchase and can be managed or cancelled in App Store account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Terms: https://www.grader.cloud/terms
Screenshots
Verdict
The clearest difference is in-app purchases: WebSky App at none against Grader.ai's 2. WebSky App also leads on device support (3 vs 1) and iOS requirement (11.0 vs 16.6). Grader.ai's advantage is update cadence (every 4 days vs every 5 months). On price and ads there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Grader.ai sells 2 in-app purchases, starting at $14.99 per month. WebSky App asks for nothing beyond the download.
WebSky App ships an update every 5 months, Grader.ai every 4 days. The most recent releases landed on October 4, 2026 and October 10, 2026 respectively.
| Parameter | WebSky App | Grader.ai |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 months | Every 4 days โ better |
| Ads | No | No |
| In-app purchases | No โ better | Yes |
| Devices | iPhone, iPad, iPod โ better | iPhone |
| Requires iOS | 11.0 โ better | 16.6 |
| Further details โ not scored | ||
| Size | 78 MB | 155 MB |
| Age rating | 4+ | 4+ |
| Developer | Novaya Studiya , Ooo | Daur Talgatov |
In-app purchases
WebSky App
No in-app purchases
Grader.ai
- Grader Plus Monthly3 Days trial$14.991 Month
- Grader Plus Yearly3 Days trial$79.991 Year
Questions
Is WebSky App free?
Is Grader.ai free?
Do WebSky App or Grader.ai have ads?
Which is updated more often, WebSky App or Grader.ai?
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