Comparison

WebSky App vs Grader.ai

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

WebSky App

Features
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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

About

Grader.ai

Features
Read full description

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

WebSky App4 screens
Grader.ai4 screens

Verdict

The call

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

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.

UpkeepUpdate frequency

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.

Scorecard4 real differences ยท 2 level
WebSky App versus Grader.ai: the parameters behind the verdict, then further details
ParameterWebSky AppGrader.ai
PriceFreeFree
Update frequencyEvery 5 monthsEvery 4 days โ€” better
AdsNoNo
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPad, iPod โ€” betteriPhone
Requires iOS11.0 โ€” better16.6
Further details โ€” not scored
Size78 MB155 MB
Age rating4+4+
DeveloperNovaya Studiya , OooDaur Talgatov

In-app purchases

None

WebSky App

No in-app purchases

2 purchases

Grader.ai

Subscriptions2
  • Grader Plus Monthly3 Days trial$14.991 Month
  • Grader Plus Yearly3 Days trial$79.991 Year

Questions

Is WebSky App free?
WebSky App is free to download, with no in-app purchases.
Is Grader.ai free?
Grader.ai is free to download, with in-app purchases available.
Do WebSky App or Grader.ai have ads?
Neither WebSky App nor Grader.ai shows ads.
Which is updated more often, WebSky App or Grader.ai?
WebSky App ships an update every 5 months, and Grader.ai every 4 days. Most recently, WebSky App was updated on October 4, 2026 and Grader.ai on October 10, 2026.

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