# AIbooks vs PhatDat eCitizen

The clearest difference is in-app purchases: PhatDat eCitizen at none against AIbooks's 4. AIbooks's advantage is update cadence (fortnightly vs every 2 months) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. AIbooks sells 4 one-off in-app purchases. PhatDat eCitizen asks for nothing beyond the download.

AIbooks ships an update fortnightly, PhatDat eCitizen every 2 months. The most recent releases landed on September 15, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | AIbooks | PhatDat eCitizen |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Size | 53 MB | 61 MB |
| Requires iOS | **15.6** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Bkav Corporation](https://appshunter.io/developer/532814714) | [PhatDat Holdings Co.,Ltd](https://appshunter.io/developer/1801633218) |

## What reviewers say

### AIbooks

[App page](https://appshunter.io/ios/app/aibooks/id6477376249)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Miễn phí 3 tháng | Free | one-time |
| 1 năm | $29.99 | one-time |
| 2 năm | $49.99 | one-time |
| 3 năm | $59.99 | one-time |


### PhatDat eCitizen

[App page](https://appshunter.io/ios/app/phatdat-ecitizen/id6743378502)

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

**In-app purchases:** none


## Frequently asked questions

### Is AIbooks free?

AIbooks is free to download, with in-app purchases available.

### Is PhatDat eCitizen free?

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

### Do AIbooks or PhatDat eCitizen have ads?

Neither AIbooks nor PhatDat eCitizen shows ads.

### Which is updated more often, AIbooks or PhatDat eCitizen?

AIbooks ships an update fortnightly, and PhatDat eCitizen every 2 months. Most recently, AIbooks was updated on September 15, 2026 and PhatDat eCitizen on September 10, 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.*