# ProofBox Vault vs KeepCue

The clearest difference is update cadence: KeepCue at every 4 days against ProofBox Vault's every 4 months. ProofBox Vault's advantage is iOS requirement (16.2 vs 18.0). On price, ads, 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 KeepCue sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

ProofBox Vault ships an update every 4 months, KeepCue every 4 days. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | ProofBox Vault | KeepCue |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (2 ratings)](https://appshunter.io/ios/app/keepcue-day-planner-routines/id6789768946/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 4 days** |
| Monetization | — | Paid |
| Size | 2 MB | 9 MB |
| Requires iOS | **16.2** | 18.0 |
| Devices | iPhone | iPhone |
| Age rating | 9+ | 4+ |
| Developer | [瑞华 张](https://appshunter.io/developer/1608130007) | [Start in June LLC](https://appshunter.io/developer/1831523078) |

## 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 |


### KeepCue

[App page](https://appshunter.io/ios/app/keepcue-day-planner-routines/id6789768946)

This app helps users establish structure and flexibility in their daily planning through cue-based routines and visual timelines. It allows for time blocking and task management, with preset routines for various parts of the day.

**Highlights:** Cue-anchored routines, Visual timeline view, Quick task creation, Break tasks into subtasks, Preset routines for morning, afterwork, and night, Flexible time blocking

**Features:** Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Yearly | $8.99 | per year |
| Lifetime | $19.99 | one-time |


## Frequently asked questions

### Is ProofBox Vault free?

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

### Is KeepCue free?

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

### Do ProofBox Vault or KeepCue have ads?

Neither ProofBox Vault nor KeepCue shows ads.

### Which is updated more often, ProofBox Vault or KeepCue?

ProofBox Vault ships an update every 4 months, and KeepCue every 4 days. Most recently, ProofBox Vault was updated on November 5, 2026 and KeepCue on October 31, 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.*