# Bitcoin RateChange vs Calk UZ

The clearest difference is in-app purchases: Bitcoin RateChange at none against Calk UZ's 1. Bitcoin RateChange also leads on iOS requirement (13.0 vs 15.0). Calk UZ's advantage is update cadence (fortnightly vs every 5 months). On price, ads and device support there is nothing between them.

Both are free to download. Calk UZ sells 1 one-off in-app purchase. Bitcoin RateChange asks for nothing beyond the download.

Bitcoin RateChange ships an update every 5 months, Calk UZ fortnightly. The most recent releases landed on October 3, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Bitcoin RateChange | Calk UZ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 5 months | **Fortnightly** |
| Size | 6 MB | 11 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yurii Sushko](https://appshunter.io/developer/1368611820) | [Konstantin Iakovlev](https://appshunter.io/developer/1896744607) |

## What reviewers say

### Bitcoin RateChange

[App page](https://appshunter.io/ios/app/bitcoin-ratechange/id1385513573)

**Features:** macOS Compatibility

**In-app purchases:** none


### Calk UZ

[App page](https://appshunter.io/ios/app/calk-uz/id6782391910)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is Bitcoin RateChange free?

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

### Is Calk UZ free?

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

### Do Bitcoin RateChange or Calk UZ have ads?

Both Bitcoin RateChange and Calk UZ show ads.

### Which is updated more often, Bitcoin RateChange or Calk UZ?

Bitcoin RateChange ships an update every 5 months, and Calk UZ fortnightly. Most recently, Bitcoin RateChange was updated on October 3, 2026 and Calk UZ on October 25, 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.*