# Compare Flow vs Open Channel Flow Lite

Compare Flow and Open Channel Flow Lite are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Compare Flow ships an update every 32 months, Open Channel Flow Lite every 25 months. The most recent releases landed on September 17, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Compare Flow | Open Channel Flow Lite |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (5 ratings)](https://appshunter.io/ios/app/compare-flow/id581217854/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 32 months | **Every 25 months** |
| Monetization | Free | — |
| Size | 23 MB | 2 MB |
| Requires iOS | 15.1 | **14.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [iENGINEERING Corporation](https://appshunter.io/developer/419618955) | [Alexius Academia](https://appshunter.io/developer/1209840214) |

## What reviewers say

### Compare Flow

[App page](https://appshunter.io/ios/app/compare-flow/id581217854)

This application helps engineers and designers evaluate the hydraulic flow capacity of various non-pressure sewer pipe types. It allows for comparisons between different pipe geometries and materials, including concrete, thermoplastic, and metal options.

**Highlights:** Manning's Formula calculation, Compare hydraulic flow capacity, Evaluate pipe geometry alternatives, Compare pipe material options, Supports concrete, thermoplastic, and metal pipes, Circular, elliptical, arch, and box sections

**Features:** macOS Compatibility

**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 Compare Flow free?

Compare Flow is free to download, 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 Compare Flow or Open Channel Flow Lite have ads?

Neither Compare Flow nor Open Channel Flow Lite shows ads.

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

Compare Flow ships an update every 32 months, and Open Channel Flow Lite every 25 months. Most recently, Compare Flow was updated on September 17, 2026 and Open Channel Flow Lite on September 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.*