# RealBook vs Covai E

The clearest difference is update cadence: Covai E at every 5 weeks against RealBook's every 9 months. 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.

RealBook ships an update every 9 months, Covai E every 5 weeks. The most recent releases landed on September 7, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | RealBook | Covai E |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 5 weeks** |
| Size | 29 MB | 26 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [GRIDSONLAB PRIVATE LIMITED](https://appshunter.io/developer/1667148802) | [Neoera Infotech](https://appshunter.io/developer/1892634938) |

## What reviewers say

### RealBook

[App page](https://appshunter.io/ios/app/realbook/id6474118699)

**Features:** macOS Compatibility

**In-app purchases:** none


### Covai E

[App page](https://appshunter.io/ios/app/covai-e-auction/id6762042283)

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

**In-app purchases:** none


## Frequently asked questions

### Is RealBook free?

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

### Is Covai E free?

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

### Do RealBook or Covai E have ads?

Neither RealBook nor Covai E shows ads.

### Which is updated more often, RealBook or Covai E?

RealBook ships an update every 9 months, and Covai E every 5 weeks. Most recently, RealBook was updated on September 7, 2026 and Covai E on September 18, 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.*