# PromptVaultPro vs NexternAI

The clearest difference is in-app purchases: NexternAI at none against PromptVaultPro's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. PromptVaultPro sells 1 one-off in-app purchase. NexternAI asks for nothing beyond the download.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on September 8, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | PromptVaultPro | NexternAI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | Weekly |
| Size | 2 MB | 9 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hao Sun](https://appshunter.io/developer/1896030287) | [Umar Muzaffar](https://appshunter.io/developer/1896628957) |

## What reviewers say

### PromptVaultPro

[App page](https://appshunter.io/ios/app/promptvaultpro/id6765668776)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PromptVault Premium | $5.99 | one-time |


### NexternAI

[App page](https://appshunter.io/ios/app/nexternai-mock-interview-prep/id6782328023)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PromptVaultPro free?

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

### Is NexternAI free?

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

### Do PromptVaultPro or NexternAI have ads?

Neither PromptVaultPro nor NexternAI shows ads.

### Which is updated more often, PromptVaultPro or NexternAI?

PromptVaultPro ships an update weekly, and NexternAI weekly. Most recently, PromptVaultPro was updated on September 8, 2026 and NexternAI on September 17, 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.*