# A4Calc vs Keyboard Extension

The clearest difference is price: Keyboard Extension at Free against A4Calc's $4.99. Keyboard Extension also leads on update cadence (monthly vs every 8 months). A4Calc's advantage is in-app purchases (none vs 6) and iOS requirement (12.0 vs 26.0). On ads and device support there is nothing between them.

Keyboard Extension is free to download; A4Calc costs $4.99 up front. Keyboard Extension sells 6 one-off in-app purchases. A4Calc asks for nothing beyond the download.

A4Calc ships an update every 8 months, Keyboard Extension monthly. The most recent releases landed on October 26, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | A4Calc | Keyboard Extension |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | — | **[4.9 (31 ratings)](https://appshunter.io/ios/app/keyboard-extension-snipkey/id6480381137/reviews)** |
| Number of ratings | — | **31** |
| Positive reviews | — | 91.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Monthly** |
| Monetization | — | Free with in-app purchases |
| Size | 2 MB | 30 MB |
| Requires iOS | **12.0** | 26.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Farren Domenici](https://appshunter.io/developer/583666476) | [Jonathan Taveras](https://appshunter.io/developer/1270478820) |

## What reviewers say

### A4Calc

[App page](https://appshunter.io/ios/app/a4calc/id734140182)

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

**In-app purchases:** none


### Keyboard Extension

[App page](https://appshunter.io/ios/app/keyboard-extension-snipkey/id6480381137)

Manage text snippets and images with a custom keyboard extension. Save time by quickly accessing and organizing your frequently used content across all applications. Features include encryption and FaceID/TouchID protection for sensitive data.

**Highlights:** Custom keyboard extension, Text and image snippet management, Tag-based organization, Encryption for sensitive data, FaceID/TouchID protection, Universal app compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Candy Tip | $1.99 | one-time |
| Juice Tip | $4.99 | one-time |
| Juice Tip | $9.99 | one-time |
| Ramen Tip | $14.99 | one-time |
| Burget Tip | $29.99 | one-time |
| Caviar Tip | $99.99 | one-time |


## Frequently asked questions

### Is A4Calc free?

A4Calc costs $4.99, with no in-app purchases.

### Is Keyboard Extension free?

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

### Do A4Calc or Keyboard Extension have ads?

Neither A4Calc nor Keyboard Extension shows ads.

### Which is updated more often, A4Calc or Keyboard Extension?

A4Calc ships an update every 8 months, and Keyboard Extension monthly. Most recently, A4Calc was updated on October 26, 2026 and Keyboard Extension on October 28, 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.*