# Black Keys vs x36

The clearest difference is review sentiment: x36 at 100% against Black Keys's 54%. x36 also leads on rating (5.0 vs 3.4). Black Keys's advantage is monetization model (free vs paid) and update cadence (fortnightly vs every 2 months). On price, ads, in-app purchases and device support there is nothing between them.

Black Keys costs $0.99 and x36 $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

x36 holds the better App Store score, 5.0 against 3.4. That said, the two scores are not equally well evidenced: Black Keys has 27 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 54% of Black Keys's written reviews are positive against 100% of x36's.

Black Keys ships an update fortnightly, x36 every 2 months. The most recent releases landed on October 17, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Black Keys | x36 |
| --- | --- | --- |
| Price | $0.99 | $0.99 |
| Rating | [3.4 (27 ratings)](https://appshunter.io/ios/app/black-keys/id899894778/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/x36/id1443849416/reviews)** |
| Number of ratings | **27** | 1 |
| Positive reviews | 53.6% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | **Free** | Paid |
| Size | 35 MB | 1 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [LE SANG](https://appshunter.io/developer/637407101) | [Carl Cook](https://appshunter.io/developer/897666025) |

## What reviewers say

### Black Keys

[App page](https://appshunter.io/ios/app/black-keys/id899894778)

This app provides multilingual keyboards for typing in unsupported languages and the International Phonetic Alphabet (IPA). It features a dark mode for eye comfort and supports a wide range of languages, including Arabic, Amharic, and Khmer. Tutorials are available for complex typing methods.

**Highlights:** Multilingual keyboard support, IPA typing, Dark mode, Support for many languages, Tutorial videos, Long-press for hidden letters

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- ✨ Supports multiple languages/fonts
- 🚀 Fast switching between keyboards
- 💰 Good value for price
- 💯 Works perfectly for specific needs (IPA, Syriac, etc.)

**What reviewers complain about**

- 🐛 Bugs and glitches
- 📉 Font issues and missing characters
- 👎 Inconsistent behavior
- 🚫 Some features not working as expected
- 🔠 Layout changes are not good

**Reported bugs**

- Keyboard takes up more space over time
- Eastern font lost after update
- Syriac-Eastern font shows as Estrangelo
- Myanmar Error Unicode and Zawgyi
- Cannot add vowels on alphabets

**Requested features**

- Fix Nestorian style font
- Add vowels on alphabets
- Improve language change button consistency
- Add custom keyboard creation/customization
- Add Latin Extended keyboard


### x36

[App page](https://appshunter.io/ios/app/x36/id1443849416)

This app offers a powerful scientific and engineering calculator with advanced features like programmability, multiple number bases, and statistical functions. It emulates the functionality of calculators from the 70s and 80s, providing over 100 functions for complex calculations.

**Highlights:** Programmability with 1000 steps, Trigonometric functions with selectable units, Statistical functions and linear regression, Four number bases (Decimal, Hex, Octal, Binary), Metric-English conversions, Fraction operations, Over 100 functions

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Black Keys free?

Black Keys costs $0.99, with no in-app purchases.

### Is x36 free?

x36 costs $0.99, with no in-app purchases.

### Which has better reviews, Black Keys or x36?

x36 is rated higher. Black Keys averages 3.4 out of 5 from 27 ratings, while x36 averages 5.0 from 1 ratings.

### Do Black Keys or x36 have ads?

Neither Black Keys nor x36 shows ads.

### Which is updated more often, Black Keys or x36?

Black Keys ships an update fortnightly, and x36 every 2 months. Most recently, Black Keys was updated on October 17, 2026 and x36 on October 8, 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.*