# BK400 vs Text Message Export

The clearest difference is in-app purchases: BK400 at none against Text Message Export's 3. BK400 also leads on iOS requirement (15.0 vs 17.1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Text Message Export sells 3 in-app purchases, starting at $8.99 per 7 days. BK400 asks for nothing beyond the download.

BK400 ships an update weekly, Text Message Export every 9 days. The most recent releases landed on October 10, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | BK400 | Text Message Export |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 9 days |
| Size | 21 MB | 4 MB |
| Requires iOS | **15.0** | 17.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [祖策 谢](https://appshunter.io/developer/983519195) | [Nguyen Tra My Le](https://appshunter.io/developer/6780785826) |

## What reviewers say

### BK400

[App page](https://appshunter.io/ios/app/bk400/id6760681499)

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

**In-app purchases:** none


### Text Message Export

[App page](https://appshunter.io/ios/app/text-message-export-chatkeep/id6780785824)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Membership Weekly | $8.99 | per 7 days |
| Premium Membership Monthly | $19.99 | per month |
| Premium Membership Yearly | $49.99 | per year |


## Frequently asked questions

### Is BK400 free?

BK400 is free to download, with no in-app purchases.

### Is Text Message Export free?

Text Message Export is free to download, with in-app purchases available.

### Do BK400 or Text Message Export have ads?

Neither BK400 nor Text Message Export shows ads.

### Which is updated more often, BK400 or Text Message Export?

BK400 ships an update weekly, and Text Message Export every 9 days. Most recently, BK400 was updated on October 10, 2026 and Text Message Export on October 6, 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.*