# OpenChart vs BlockTrader

The clearest difference is in-app purchases: BlockTrader at none against OpenChart's 2. BlockTrader also leads on update cadence (every 4 days vs every 8 days) and iOS requirement (15.1 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. OpenChart sells 2 in-app purchases, starting at $3.99 per month. BlockTrader asks for nothing beyond the download.

OpenChart ships an update every 8 days, BlockTrader every 4 days. Both last shipped on October 10, 2026.

## The numbers

| Metric | OpenChart | BlockTrader |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 8 days | **Every 4 days** |
| Size | 67 MB | 37 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [younghyun choi](https://appshunter.io/developer/1844194272) | [MELISOFT](https://appshunter.io/developer/1717735989) |

## What reviewers say

### OpenChart

[App page](https://appshunter.io/ios/app/openchart-crypto-charts/id6778795322)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OpenChart PRO | $3.99 | per month |
| OpenChart Pro Yearly | $29.99 | per year |


### BlockTrader

[App page](https://appshunter.io/ios/app/blocktrader-crypto-alerts/id6809778624)

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

**In-app purchases:** none


## Frequently asked questions

### Is OpenChart free?

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

### Is BlockTrader free?

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

### Do OpenChart or BlockTrader have ads?

Neither OpenChart nor BlockTrader shows ads.

### Which is updated more often, OpenChart or BlockTrader?

OpenChart ships an update every 8 days, and BlockTrader every 4 days. Most recently, OpenChart was updated on October 10, 2026 and BlockTrader on October 10, 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.*