# ISOTRA Video Guide vs SOURCE INT

The clearest difference is iOS requirement: ISOTRA Video Guide at 12.4 against SOURCE INT's 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ISOTRA Video Guide ships an update every 5 months, SOURCE INT every 3 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | ISOTRA Video Guide | SOURCE INT |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 months** |
| Size | 4 MB | 126 MB |
| Requires iOS | **12.4** | 15.1 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [ISOTRA a.s.](https://appshunter.io/developer/972810048) | [Source INT S.A](https://appshunter.io/developer/1049479470) |

## What reviewers say

### ISOTRA Video Guide

[App page](https://appshunter.io/ios/app/isotra-video-guide/id1243383613)

**Features:** macOS Compatibility

**In-app purchases:** none


### SOURCE INT

[App page](https://appshunter.io/ios/app/source-int/id1566314128)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ISOTRA Video Guide free?

ISOTRA Video Guide is free to download, with no in-app purchases.

### Is SOURCE INT free?

SOURCE INT is free to download, with no in-app purchases.

### Do ISOTRA Video Guide or SOURCE INT have ads?

Neither ISOTRA Video Guide nor SOURCE INT shows ads.

### Which is updated more often, ISOTRA Video Guide or SOURCE INT?

ISOTRA Video Guide ships an update every 5 months, and SOURCE INT every 3 months. Most recently, ISOTRA Video Guide was updated on November 2, 2026 and SOURCE INT on November 3, 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.*