# PSSMath vs LingvaSfero

The clearest difference is ads: PSSMath at none against LingvaSfero's shown. PSSMath also leads on iOS requirement (15.1 vs 18.5). On price, 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 | PSSMath | LingvaSfero |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | — | Daily |
| Size | 32 MB | 59 MB |
| Requires iOS | **15.1** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 9+ | 17+ |
| Developer | [DESMOND WARRINGTON](https://appshunter.io/developer/1864525985) | [Alexis Aneas](https://appshunter.io/developer/6810383160) |

## What reviewers say

### PSSMath

[App page](https://appshunter.io/ios/app/pssmath/id6757955212)

**In-app purchases:** none


### LingvaSfero

[App page](https://appshunter.io/ios/app/lingvasfero/id6810383158)

**In-app purchases:** none


## Frequently asked questions

### Is PSSMath free?

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

### Is LingvaSfero free?

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

### Do PSSMath or LingvaSfero have ads?

LingvaSfero shows ads; PSSMath does not.

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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.*