Comparison

Onclass Messenger vs Bluebird

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

Head to head
About

Onclass Messenger

This app facilitates communication between students and teachers using your phone's internet connection. It allows for direct messaging, group chats, and ensures you remain logged in to never miss important messages or notifications.

Highlights
  • Direct messaging
  • Group chat
  • Cross-app messaging
  • Push notifications
  • Always logged in
Features
Read full description

OnClass Messenger is a FREE messaging app available for iPhone and other smartphones. Messenger uses your phone's Internet connection (4G/ 3G/2G/EDGE or Wi-Fi, if available) to let you to exchange messages with students and teachers. CROSS-APP MESSAGING AND NOTIFICATIONS Connect with your users directly from Messenger. Simply search for them by name to message. GROUP CHAT: Enjoy group chats you can easily stay in touch with OnClass users. ALWAYS LOGGED IN: With OnClass Messenger , you're always logged in so you don't miss messages and notifications. No more confusion about whether you're logged in or logged out. We're always excited to hear from you! If you have feedback, questions, or concerns, please email us at: info@onclass.com Note: OnClass Messenger is a smartphone app ( Version for iPod and iPad is in development). Onclass: https://ru.onclass.com/ Terms: https://ru.onclass.com/terms E-mail: info@onclass.com

About

Bluebird

Features
Read full description

Quickly learn to speak and understand Czech with interactive video lessons narrated in any of 146 languages. "Affordable, responsive, easy to set up, and simple to access, Bluebird is loaded with user-friendly features and contains an enormous amount of content. This is an excellent resource for users seeking a handy, enhanced mobile experience for language learning." - Library Journal Choose from 2,000 pre-recorded lessons (over 5 years of lessons) or create a truly personalized course that revolves around the things you love. If you’re learning for your job, you can even create a personalized course for any of 60 occupations. Bluebird uses the scientifically proven spaced repetition technique, so you’ll learn quickly and retain what you learn long-term. Just listen and repeat – it’s that easy. Learn Czech hands-free. No typing or swiping needed. Learn while you’re exercising, cooking, commuting, or relaxing at home. You can even stream your Bluebird lessons to smart speakers. You’ll Learn: * 2,000 high frequency words. (84% of everyday speech includes these powerful words.) * The top 100 verbs – with conjugations in the past, present, and future tenses. * How to build complete sentences on your own. * How to manage dozens of everyday situations. * How to handle complex conversations. Watch Your Progress: * 2,000 quizzes will test your knowledge and reinforce what you learn. * Each quiz contains a variety of question types to evaluate your listening, reading, and writing skills. * See your statistics for both your lessons and quizzes at any time. A Global Approach Bluebird brings language learning to the world’s population in an unprecedented way. You can learn Czech from any of 146 narration languages. Something for Everybody Whether you’re preparing for a trip or want to learn Czech for fun, school, or work, Bluebird will teach you what you need to know, and ensure you remember what you learn long-term. And, with family-friendly content throughout, your whole family can enjoy learning Czech the Bluebird way. Unparalleled Content and Quality Bluebird has the most comprehensive language courses in the world, with an average of 10,000 instructional phrases per language. Each Bluebird lesson lasts between 15 and 45 minutes, with the average lesson lasting 30 minutes. Our curriculum is teacher-designed and human-translated; our narrators and actors are professional voice-over artists and native speakers of their respective languages; and our audio is studio-grade.

Screenshots

Onclass Messenger4 screens
Bluebird4 screens

Verdict

The call

The clearest difference is in-app purchases: Onclass Messenger at none against Bluebird's 5. Bluebird's advantage is ads (none vs shown) and update cadence (every 3 months vs every 6 months). On price and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Bluebird sells 5 in-app purchases, starting at $9.99 per month. Onclass Messenger asks for nothing beyond the download.

UpkeepUpdate frequency

Onclass Messenger ships an update every 6 months, Bluebird every 3 months. The most recent releases landed on October 18, 2026 and October 10, 2026 respectively.

Scorecard4 real differences · 6 level
Onclass Messenger versus Bluebird: the parameters behind the verdict, then further details
ParameterOnclass MessengerBluebird
PriceFreeFree
Rating1.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 6 monthsEvery 3 months — better
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationAd-supported—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size35 MB45 MB
Age rating4+12+
DeveloperLingo Play LtdPronunciator LLC

In-app purchases

None

Onclass Messenger

No in-app purchases

5 purchases

Bluebird

Subscriptions2
  • Unlimited languages (1 month)$9.991 Month
  • Unlimited languages (1 year)$99.991 Year
One-time3
  • RAPID TEST PRODUCT$19.99
  • One Language Lifetime purchase$99.00
  • Lifetime purchase$199.99

Questions

Is Onclass Messenger free?
Onclass Messenger is free to download, with no in-app purchases.
Is Bluebird free?
Bluebird is free to download, with in-app purchases available.
Do Onclass Messenger or Bluebird have ads?
Onclass Messenger shows ads; Bluebird does not.
Which is updated more often, Onclass Messenger or Bluebird?
Onclass Messenger ships an update every 6 months, and Bluebird every 3 months. Most recently, Onclass Messenger was updated on October 18, 2026 and Bluebird on October 10, 2026.

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