# ESOT vs ISPPD

The clearest difference is device support: ESOT at 3 against ISPPD's —. ISPPD's advantage is iOS requirement (11.0 vs 15.5). On price 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.

## The numbers

| Metric | ESOT | ISPPD |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Every 5 months | — |
| Size | 84 MB | 26 MB |
| Requires iOS | 15.5 | **11.0** |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 12+ | 17+ |
| Developer | [Steunstichting ESOT](https://appshunter.io/developer/1394032818) | [International Symposium on Pneumococci and Pneumococcal Diseases Association](https://appshunter.io/developer/1622856380) |

## What reviewers say

### ESOT

[App page](https://appshunter.io/ios/app/esot/id1518011192)

**Features:** macOS Compatibility

**In-app purchases:** none


### ISPPD

[App page](https://appshunter.io/ios/app/isppd-13/id6478120943)

**In-app purchases:** none


## Frequently asked questions

### Is ESOT free?

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

### Is ISPPD free?

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

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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.*