# ProofBox Vault vs PromptDock AI

The clearest difference is price: ProofBox Vault at Free against PromptDock AI's $0.29. ProofBox Vault also leads on iOS requirement (16.2 vs 18.0). PromptDock AI's advantage is in-app purchases (none vs 1) and update cadence (weekly vs every 4 months). On ads and device support there is nothing between them.

ProofBox Vault is free to download; PromptDock AI costs $0.29 up front. ProofBox Vault sells 1 one-off in-app purchase. PromptDock AI asks for nothing beyond the download.

ProofBox Vault ships an update every 4 months, PromptDock AI weekly. The most recent releases landed on October 10, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | ProofBox Vault | PromptDock AI |
| --- | --- | --- |
| Price | **Free** | $0.29 |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/promptdock-ai/id6772130038/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Weekly** |
| Monetization | — | Paid |
| Size | 2 MB | 13 MB |
| Requires iOS | **16.2** | 18.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 9+ | 4+ |
| Developer | [瑞华 张](https://appshunter.io/developer/1608130007) | [Makoto Fukuoka](https://appshunter.io/developer/1817908735) |

## What reviewers say

### ProofBox Vault

[App page](https://appshunter.io/ios/app/proofbox-vault/id6763721179)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ProofBox Pro | $6.99 | one-time |


### PromptDock AI

[App page](https://appshunter.io/ios/app/promptdock-ai/id6772130038)

Streamline your AI prompt creation with reusable templates and saved input sets. Quickly generate structured prompts for various AI models, saving time and effort in your workflow. Export and import custom templates for a personalized experience.

**Highlights:** Built-in prompt templates, Custom prompt templates, Saved input sets, Prompt history, JSON export/import, One-tap copy

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

**In-app purchases:** none


## Frequently asked questions

### Is ProofBox Vault free?

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

### Is PromptDock AI free?

PromptDock AI costs $0.29, with no in-app purchases.

### Do ProofBox Vault or PromptDock AI have ads?

Neither ProofBox Vault nor PromptDock AI shows ads.

### Which is updated more often, ProofBox Vault or PromptDock AI?

ProofBox Vault ships an update every 4 months, and PromptDock AI weekly. Most recently, ProofBox Vault was updated on October 10, 2026 and PromptDock AI on October 25, 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.*