# ProofBox Vault vs Amber

The clearest difference is ads: ProofBox Vault at none against Amber's shown. ProofBox Vault also leads on iOS requirement (16.2 vs 18.6). On price, in-app purchases and device support there is nothing between them.

Both are free to download. ProofBox Vault sells 1 one-off in-app purchase and Amber sells 1 in-app purchase, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | ProofBox Vault | Amber |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | — |
| Size | 2 MB | 114 MB |
| Requires iOS | **16.2** | 18.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 9+ | 4+ |
| Developer | [瑞华 张](https://appshunter.io/developer/1608130007) | [Gal Itach](https://appshunter.io/developer/1867158254) |

## 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 |


### Amber

[App page](https://appshunter.io/ios/app/amber-study-focus-and-sleep/id6773214018)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Amber Light Pro | $0.99 | per month |


## Frequently asked questions

### Is ProofBox Vault free?

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

### Is Amber free?

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

### Do ProofBox Vault or Amber have ads?

Amber shows ads; ProofBox Vault does not.

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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.*