# COS Rock vs OpenBook.Today

The clearest difference is iOS requirement: COS Rock at 14.0 against OpenBook.Today's 16.6. 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 | COS Rock | OpenBook.Today |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (14 ratings)](https://appshunter.io/ios/app/openbooktoday/id6760734624/reviews)** |
| Number of ratings | — | **14** |
| In-app purchases | No | No |
| Ads | — | No |
| Monetization | — | Free |
| Size | 7 MB | 88 MB |
| Requires iOS | **14.0** | 16.6 |
| Devices | — | **iPhone** |
| Age rating | 4+ | 4+ |
| Developer | [Christ Our Savior Lutheran Church](https://appshunter.io/developer/1527314056) | [Grace Ungemach](https://appshunter.io/developer/1886004315) |

## What reviewers say

### COS Rock

[App page](https://appshunter.io/ios/app/cos-rock/id1210536201)

**In-app purchases:** none


### OpenBook.Today

[App page](https://appshunter.io/ios/app/openbooktoday/id6760734624)

This app encourages consistent daily Bible study by guiding users through scripture. It promotes an analog experience with physical Bibles and personal reflection, fostering independent study rather than providing daily devotionals. Users can connect with others studying the same passages for accountability without social media pressures.

**Highlights:** Guided scripture study, Personal reflection prompts, Analog Bible integration, Accountability partners, Verse-by-verse digging, Community study feed

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

**In-app purchases:** none


## Frequently asked questions

### Is COS Rock free?

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

### Is OpenBook.Today free?

OpenBook.Today 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.*