# Rocket Keyboard vs Book Highlight Vault

Rocket Keyboard and Book Highlight Vault are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Rocket Keyboard sells 1 one-off in-app purchase and Book Highlight Vault sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Rocket Keyboard ships an update every 2 months, Book Highlight Vault every 3 months. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Rocket Keyboard | Book Highlight Vault |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (7 ratings)](https://appshunter.io/ios/app/rocket-keyboard-text-expander/id947029839/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 40.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 10 MB | 19 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [晶晶 殷](https://appshunter.io/developer/355709937) | [Snip](https://appshunter.io/developer/1848598587) |

## What reviewers say

### Rocket Keyboard

[App page](https://appshunter.io/ios/app/rocket-keyboard-text-expander/id947029839)

This utility app allows you to create custom keyboard shortcuts for frequently used text. With a single tap on a phrase, you can instantly insert longer text or complete sentences, saving you time and effort.

**Highlights:** Create custom text phrases, Single-tap text expansion, Keyboard integration, Save time on repetitive typing, Insert long text or sentences

**Features:** iPhone Duo support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Shortcuts | $2.99 | one-time |


### Book Highlight Vault

[App page](https://appshunter.io/ios/app/book-highlight-vault-snip/id6759819024)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Snip Pro Monthly | $2.99 | per month |
| Snip Pro Annual | $19.99 | per year |


## Frequently asked questions

### Is Rocket Keyboard free?

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

### Is Book Highlight Vault free?

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

### Do Rocket Keyboard or Book Highlight Vault have ads?

Neither Rocket Keyboard nor Book Highlight Vault shows ads.

### Which is updated more often, Rocket Keyboard or Book Highlight Vault?

Rocket Keyboard ships an update every 2 months, and Book Highlight Vault every 3 months. Most recently, Rocket Keyboard was updated on November 1, 2026 and Book Highlight Vault 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.*