# DBSM vs ISB

The clearest difference is iOS requirement: DBSM at 12.0 against ISB's 15.1. On price, ads, in-app purchases and device support there is nothing between them.

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

## The numbers

| Metric | DBSM | ISB |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 2 weeks |
| Size | 46 MB | 52 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Eugene Florence](https://appshunter.io/developer/1750661044) | [Indian School of Business](https://appshunter.io/developer/884930546) |

## What reviewers say

### DBSM

[App page](https://appshunter.io/ios/app/dbsm-skill-mission/id6752875307)

**In-app purchases:** none


### ISB

[App page](https://appshunter.io/ios/app/isb-learning-app/id6760743087)

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

**In-app purchases:** none


## Frequently asked questions

### Is DBSM free?

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

### Is ISB free?

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

### Do DBSM or ISB have ads?

Neither DBSM nor ISB shows ads.

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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.*