# SimTunnel Pro vs Open Channel Flow Lite

The clearest difference is price: Open Channel Flow Lite at Free against SimTunnel Pro's $1.99. Open Channel Flow Lite also leads on update cadence (every 13 months vs every 39 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Open Channel Flow Lite is free to download; SimTunnel Pro costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

SimTunnel Pro ships an update every 39 months, Open Channel Flow Lite every 13 months. The most recent releases landed on October 12, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | SimTunnel Pro | Open Channel Flow Lite |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 39 months | **Every 13 months** |
| Size | 5 MB | 2 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Roozbeh Geraili Mikola](https://appshunter.io/developer/1403201499) | [Alexius Academia](https://appshunter.io/developer/1209840214) |

## What reviewers say

### SimTunnel Pro

[App page](https://appshunter.io/ios/app/simtunnel-pro/id1493879721)

**In-app purchases:** none


### Open Channel Flow Lite

[App page](https://appshunter.io/ios/app/open-channel-flow-lite/id1579229822)

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

**In-app purchases:** none


## Frequently asked questions

### Is SimTunnel Pro free?

SimTunnel Pro costs $1.99, with no in-app purchases.

### Is Open Channel Flow Lite free?

Open Channel Flow Lite is free to download, with no in-app purchases.

### Do SimTunnel Pro or Open Channel Flow Lite have ads?

Neither SimTunnel Pro nor Open Channel Flow Lite shows ads.

### Which is updated more often, SimTunnel Pro or Open Channel Flow Lite?

SimTunnel Pro ships an update every 39 months, and Open Channel Flow Lite every 13 months. Most recently, SimTunnel Pro was updated on October 12, 2026 and Open Channel Flow Lite on October 14, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*