# Reading SD vs Outdoor Odyssey

The clearest difference is device support: Outdoor Odyssey at 3 against Reading SD's 1. Outdoor Odyssey also leads on iOS requirement (13.0 vs 16.0). On price, 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.

## The numbers

| Metric | Reading SD | Outdoor Odyssey |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Size | 112 MB | 25 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Reading School District](https://appshunter.io/developer/1409634760) | [Sourceree](https://appshunter.io/developer/1753430132) |

## What reviewers say

### Reading SD

[App page](https://appshunter.io/ios/app/reading-sd/id6738656527)

**In-app purchases:** none


### Outdoor Odyssey

[App page](https://appshunter.io/ios/app/outdoor-odyssey/id6768506380)

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

**In-app purchases:** none


## Frequently asked questions

### Is Reading SD free?

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

### Is Outdoor Odyssey free?

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

### Do Reading SD or Outdoor Odyssey have ads?

Neither Reading SD nor Outdoor Odyssey 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.*