# Sollun Sec vs OpenChart

The clearest difference is in-app purchases: Sollun Sec at none against OpenChart's 2. Sollun Sec also leads on iOS requirement (15.0 vs 17.0). On price, update cadence, 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. Sollun Sec asks for nothing beyond the download.

Sollun Sec ships an update fortnightly, OpenChart every 8 days. The most recent releases landed on October 12, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Sollun Sec | OpenChart |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 8 days** |
| Size | 34 MB | 67 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Strawti Tecnologia e Inovacao LTDA](https://appshunter.io/developer/1610793062) | [younghyun choi](https://appshunter.io/developer/1844194272) |

## What reviewers say

### Sollun Sec

[App page](https://appshunter.io/ios/app/sollun-sec/id6759336839)

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

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Sollun Sec free?

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

### Is OpenChart free?

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

### Do Sollun Sec or OpenChart have ads?

Neither Sollun Sec nor OpenChart shows ads.

### Which is updated more often, Sollun Sec or OpenChart?

Sollun Sec ships an update fortnightly, and OpenChart every 8 days. Most recently, Sollun Sec was updated on October 12, 2026 and OpenChart 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.*