# Maths PDF vs Altair

The clearest difference is update cadence: Altair at every 10 days against Maths PDF's every 3 months. Altair also leads on iOS requirement (13.0 vs 15.0). 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.

Maths PDF ships an update every 3 months, Altair every 10 days. The most recent releases landed on October 14, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Maths PDF | Altair |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 10 days** |
| Size | 38 MB | 20 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ali hamraoui](https://appshunter.io/developer/1174501490) | [Altair Groupe](https://appshunter.io/developer/1840023786) |

## What reviewers say

### Maths PDF

[App page](https://appshunter.io/ios/app/maths-pdf/id1482882418)

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

**In-app purchases:** none


### Altair

[App page](https://appshunter.io/ios/app/altair/id6752584995)

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

**In-app purchases:** none


## Frequently asked questions

### Is Maths PDF free?

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

### Is Altair free?

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

### Do Maths PDF or Altair have ads?

Neither Maths PDF nor Altair shows ads.

### Which is updated more often, Maths PDF or Altair?

Maths PDF ships an update every 3 months, and Altair every 10 days. Most recently, Maths PDF was updated on October 14, 2026 and Altair on October 8, 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.*