# Sora, by OverDrive Education vs WolfKey

The clearest difference is device support: Sora, by OverDrive Education at 3 against WolfKey's 1. Sora, by OverDrive Education also leads on iOS requirement (13.0 vs 16.4). On price, update cadence, 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.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on November 6, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Sora, by OverDrive Education | WolfKey |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (626 ratings)](https://appshunter.io/ios/app/sora-by-overdrive-education/id1376592326/reviews)** | — |
| Number of ratings | **626** | — |
| Positive reviews | 45.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Monetization | Free | — |
| Size | 5 MB | 52 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [OverDrive, Inc.](https://appshunter.io/developer/366869255) | [Kevin Chung](https://appshunter.io/developer/1837310210) |

## What reviewers say

### Sora, by OverDrive Education

[App page](https://appshunter.io/ios/app/sora-by-overdrive-education/id1376592326)

Access and borrow ebooks and audiobooks from your school's digital library. Enjoy a built-in reader and player, track your reading progress, and export notes. Discover assigned titles and personal favorites with ease.

**Highlights:** Borrow ebooks and audiobooks, Built-in eBook reader, Audiobook player, Track reading time and books read, Create and export notes/highlights, Define words and review vocabulary

**In-app purchases:** none

**What reviewers like**

- 🚀 Many options
- 👍 Free books
- 🎧 Good for audiobooks
- 💡 Tracks reading progress

**What reviewers complain about**

- 🐛 Glitches and crashes
- ⏱️ Long wait times for popular books
- 📚 Limited book selection
- 🔍 Difficult to find specific books

**Reported bugs**

- Pages freeze or don't load properly
- Reading progress not tracked accurately
- Inability to renew books
- Accounts randomly logged out

**Requested features**

- More manga and graphic novels
- Ability to join more reading challenges
- Increase loan/hold limits
- Better notification system for available holds


### WolfKey

[App page](https://appshunter.io/ios/app/wolfkey/id6751865501)

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

**In-app purchases:** none


## Frequently asked questions

### Is Sora, by OverDrive Education free?

Sora, by OverDrive Education is free to download, with no in-app purchases.

### Is WolfKey free?

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

### Do Sora, by OverDrive Education or WolfKey have ads?

Neither Sora, by OverDrive Education nor WolfKey shows ads.

### Which is updated more often, Sora, by OverDrive Education or WolfKey?

Sora, by OverDrive Education ships an update monthly, and WolfKey monthly. Most recently, Sora, by OverDrive Education was updated on November 6, 2026 and WolfKey on November 5, 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.*