# Onclass Messenger vs Calculator live

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.

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.

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.

## The numbers

| Metric | Onclass Messenger | Calculator live |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/onclass-messenger/id1536409641/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 6 months | **Daily** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 35 MB | 3 MB |
| Requires iOS | **15.0** | 17.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Lingo Play Ltd](https://appshunter.io/developer/969976196) | [Nikolai Bidzinashvili](https://appshunter.io/developer/1887808451) |

## What reviewers say

### Onclass Messenger

[App page](https://appshunter.io/ios/app/onclass-messenger/id1536409641)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Calculator live

[App page](https://appshunter.io/ios/app/calculator-live/id6761106949)

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:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Open history | $0.99 | per month |
| Open history | $9.99 | per year |


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*