# sSLOPE vs Open Channel Flow Lite

The clearest difference is price: Open Channel Flow Lite at Free against sSLOPE's $3.99. Open Channel Flow Lite also leads on update cadence (every 13 months vs every 27 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Open Channel Flow Lite is free to download; sSLOPE costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

sSLOPE ships an update every 27 months, Open Channel Flow Lite every 13 months. The most recent releases landed on September 29, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | sSLOPE | Open Channel Flow Lite |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/sslope/id1403201500/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 27 months | **Every 13 months** |
| Monetization | Paid | — |
| Size | 4 MB | 2 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Roozbeh Geraili Mikola](https://appshunter.io/developer/1403201499) | [Alexius Academia](https://appshunter.io/developer/1209840214) |

## What reviewers say

### sSLOPE

[App page](https://appshunter.io/ios/app/sslope/id1403201500)

Perform quick slope stability analyses on your mobile device. This app uses the simplified Bishop method to calculate the Factor of Safety for soil and rock slopes, supporting various conditions like water tables, external loads, and seismic forces.

**Highlights:** Analyze horizontally layered soil slopes (up to 7 layers), Incorporate water table effects and ponded water, Apply vertical external loading, Model pseudo-static seismic loads, Simulate End Anchored and Soil Nail support, Adjust failure surface search limits, Utilize Mohr-Coulomb and Hoek-Brown strength criteria, Generate and email PDF reports

**In-app purchases:** none


### Open Channel Flow Lite

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is sSLOPE free?

sSLOPE costs $3.99, 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 sSLOPE or Open Channel Flow Lite have ads?

Neither sSLOPE nor Open Channel Flow Lite shows ads.

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

sSLOPE ships an update every 27 months, and Open Channel Flow Lite every 13 months. Most recently, sSLOPE was updated on September 29, 2026 and Open Channel Flow Lite on October 14, 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.*