# ProofBox Vault vs Kizami

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

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

## The numbers

| Metric | ProofBox Vault | Kizami |
| --- | --- | --- |
| Price | **Free** | $0.29 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | — |
| Size | 2 MB | 16 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 |


### Kizami

[App page](https://appshunter.io/ios/app/kizami/id6795788626)

**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 Kizami free?

Kizami costs $0.29, with no in-app purchases.

### Do ProofBox Vault or Kizami have ads?

Neither ProofBox Vault nor Kizami shows ads.

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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.*