# CryptKB vs Calculator Sci Unit Converter

The clearest difference is price: CryptKB at Free against Calculator Sci Unit Converter's $1.99. CryptKB also leads on rating (5.0 vs 4.0). Calculator Sci Unit Converter's advantage is iOS requirement (13.0 vs 17.0). On ratings volume, ads, in-app purchases and device support there is nothing between them.

CryptKB is free to download; Calculator Sci Unit Converter costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

CryptKB holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

## The numbers

| Metric | CryptKB | Calculator Sci Unit Converter |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cryptkb/id6761269767/reviews)** | [4.0 (2 ratings)](https://appshunter.io/ios/app/calculator-sci-unit-converter/id6772422667/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Monthly |
| Monetization | **Free** | Paid |
| Size | 5 MB | 25 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Seth Farrington18896201822](https://appshunter.io/developer/1803242963) | [Xiamen City Fanyou Network Technology Co., Ltd.](https://appshunter.io/developer/1842524161) |

## What reviewers say

### CryptKB

[App page](https://appshunter.io/ios/app/cryptkb/id6761269767)

Encrypt messages and files locally on your device before sending. Use a custom keyboard or Messages extension to easily encrypt and decrypt content with a password. Your data remains private with no account creation or backend servers.

**Highlights:** Local encryption/decryption, Custom keyboard integration, Messages extension, AES-256-GCM encryption, ASCII-safe payload, Password saving with Face ID/passcode

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

**In-app purchases:** none


### Calculator Sci Unit Converter

[App page](https://appshunter.io/ios/app/calculator-sci-unit-converter/id6772422667)

This app offers a robust calculator with both standard and scientific functions. It includes a unit converter for various measurements and currency, plus helpful shortcuts for percentages, taxes, and tips. All calculations are saved locally for easy access.

**Highlights:** Standard and scientific calculator modes, Unit conversion for length, weight, temperature, currency, Full calculation history log, Percentage, tax, and tip calculation shortcuts, Offline functionality, Optimized for phone and tablet

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

**In-app purchases:** none


## Frequently asked questions

### Is CryptKB free?

CryptKB is free to download, with no in-app purchases.

### Is Calculator Sci Unit Converter free?

Calculator Sci Unit Converter costs $1.99, with no in-app purchases.

### Which has better reviews, CryptKB or Calculator Sci Unit Converter?

CryptKB is rated higher. CryptKB averages 5.0 out of 5 from 1 ratings, while Calculator Sci Unit Converter averages 4.0 from 2 ratings.

### Do CryptKB or Calculator Sci Unit Converter have ads?

Neither CryptKB nor Calculator Sci Unit Converter 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.*