Comparison

Onclass Messenger vs Calculator live

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

Calculator live

This app provides an always-active calculator with a live history of all your computations. Easily edit, add notes, and copy past calculations or results. It keeps a chronological record of your work, allowing for quick retrieval and modification.

Highlights
  • Live calculation history
  • Edit past computations
  • Add notes to calculations
  • Copy results and equations
  • Organized by date
  • Clear history
Features
Read full description

Calculator with history; all your previous calculations remain active, as if you had an infinite number of calculators in your hands at once. You can always find a calculation you've done previously. - By tapping the desired calculation, you can make edits, add or remove numbers, or correct an incorrect number. Italics will also activate at this point, allowing you to conveniently select the location in the calculation where you want to make changes or remove numbers. - You can add notes to your calculations so you don't forget what you were calculating. - Long-pressing on a calculation result copies the result and automatically enters it into the input window (for example, if you want to continue calculating with an existing result). This result will also be copied to the clipboard, ready to be pasted anywhere, such as into a notepad. - Long-pressing on an equation copies it, allowing you to paste it anywhere, not limited to the Live Calculator app. - Long-pressing the input field activates the paste function for anything you've copied previously from the Live Calculator app or any other app, such as Notepad. - All equations are conveniently sorted by date. Tapping any date displays all the dates on which you performed calculations, and selecting the desired date displays all calculations performed on that day. - Long-pressing the AC completely deletes the history. - You can add a note to any calculation in the history. https://www.apple.com/legal/internet-services/itunes/dev/stdeula

Screenshots

Onclass Messenger4 screens
Calculator live4 screens

Verdict

The call

The clearest difference is in-app purchases: Onclass Messenger at none against Calculator live's 2. Onclass Messenger also leads on iOS requirement (15.0 vs 17.4). Calculator live's advantage is ads (none vs shown) and update cadence (daily vs every 6 months). On price, review sentiment 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. Calculator live sells 2 in-app purchases, starting at $0.99 per month. Onclass Messenger asks for nothing beyond the download.

UpkeepUpdate frequency

Onclass Messenger ships an update every 6 months, Calculator live daily. The most recent releases landed on September 29, 2026 and October 4, 2026 respectively.

Scorecard5 real differences · 5 level
Onclass Messenger versus Calculator live: the parameters behind the verdict, then further details
ParameterOnclass MessengerCalculator live
PriceFreeFree
Rating1.0 (1 ratings) — better—
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings1 — better—
Update frequencyEvery 6 monthsDaily — better
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationAd-supported — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS15.0 — better17.4
Further details — not scored
Size35 MB3 MB
Age rating4+4+
DeveloperLingo Play LtdNikolai Bidzinashvili

Customer experience

Onclass Messenger

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Calculator live

Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Onclass Messenger

No in-app purchases

2 purchases

Calculator live

Subscriptions2
  • Open history3 Days trial$0.991 Month
  • Open history3 Days trial$9.991 Year

Questions

Is Onclass Messenger free?
Onclass Messenger is free to download, with no in-app purchases.
Is Calculator live free?
Calculator live is free to download, with in-app purchases available.
Do Onclass Messenger or Calculator live have ads?
Onclass Messenger shows ads; Calculator live does not.
Which is updated more often, Onclass Messenger or Calculator live?
Onclass Messenger ships an update every 6 months, and Calculator live daily. Most recently, Onclass Messenger was updated on September 29, 2026 and Calculator live on October 4, 2026.

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