# Integrate Viewer vs Smart Online Classes

The clearest difference is in-app purchases: Integrate Viewer at none against Smart Online Classes's 10. Integrate Viewer also leads on iOS requirement (11.0 vs 15.5). Smart Online Classes's advantage is update cadence (every 12 months vs every 48 months). On price, ads and device support there is nothing between them.

Both are free to download. Smart Online Classes sells 10 one-off in-app purchases. Integrate Viewer asks for nothing beyond the download.

Integrate Viewer ships an update every 48 months, Smart Online Classes every 12 months. The most recent releases landed on September 19, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Integrate Viewer | Smart Online Classes |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 48 months | **Every 12 months** |
| Size | 1.1 GB | 221 MB |
| Requires iOS | **11.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Woongjin Compass, Co., Ltd.](https://appshunter.io/developer/393294989) | [Online Learning](https://appshunter.io/developer/1790866777) |

## What reviewers say

### Integrate Viewer

[App page](https://appshunter.io/ios/app/integrate-viewer/id1525664643)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Smart Online Classes

[App page](https://appshunter.io/ios/app/smart-online-classes/id6751947563)

**Features:** Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Package - AU | $34.99 | one-time |
| Package - AV | $34.99 | one-time |
| Package - AY | $39.99 | one-time |
| Package - BB | $39.99 | one-time |
| Package - BD | $39.99 | one-time |
| Package - AX | $39.99 | one-time |
| Package - BE | $44.99 | one-time |
| Package - BF | $49.99 | one-time |
| Package - BG | $49.99 | one-time |
| Package - BH | $49.99 | one-time |


## Frequently asked questions

### Is Integrate Viewer free?

Integrate Viewer is free to download, with no in-app purchases.

### Is Smart Online Classes free?

Smart Online Classes is free to download, with in-app purchases available.

### Do Integrate Viewer or Smart Online Classes have ads?

Neither Integrate Viewer nor Smart Online Classes shows ads.

### Which is updated more often, Integrate Viewer or Smart Online Classes?

Integrate Viewer ships an update every 48 months, and Smart Online Classes every 12 months. Most recently, Integrate Viewer was updated on September 19, 2026 and Smart Online Classes on September 24, 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.*