# Flow vs Smart Drainage System Control

The clearest difference is update cadence: Smart Drainage System Control at every 5 days against Flow's every 3 months. Flow's advantage is iOS requirement (9.0 vs 15.3). On price, ads, in-app purchases and device support there is nothing between them.

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

Flow ships an update every 3 months, Smart Drainage System Control every 5 days. The most recent releases landed on September 17, 2026 and August 17, 2026 respectively.

## The numbers

| Metric | Flow | Smart Drainage System Control |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/smart-drainage-system-control/id6752671573/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 days** |
| Monetization | — | Free |
| Size | 54 MB | 37 MB |
| Requires iOS | **9.0** | 15.3 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Soil-Max, Inc.](https://appshunter.io/developer/1505464314) | [Agri Drain](https://appshunter.io/developer/1783382657) |

## What reviewers say

### Flow

[App page](https://appshunter.io/ios/app/flow-x/id1505464315)

**Features:** macOS Compatibility

**In-app purchases:** none


### Smart Drainage System Control

[App page](https://appshunter.io/ios/app/smart-drainage-system-control/id6752671573)

Manage farm water systems for increased profitability and environmental protection. Optimize drainage, sub-irrigation, and conservation practices to improve water quality, boost yields, and reduce soil erosion.

**Highlights:** Water management optimization, Drainage water management, Sub-irrigation, Conservation practices, Improved water quality, Increased farm profitability

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Flow free?

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

### Is Smart Drainage System Control free?

Smart Drainage System Control is free to download, with no in-app purchases.

### Do Flow or Smart Drainage System Control have ads?

Neither Flow nor Smart Drainage System Control shows ads.

### Which is updated more often, Flow or Smart Drainage System Control?

Flow ships an update every 3 months, and Smart Drainage System Control every 5 days. Most recently, Flow was updated on September 17, 2026 and Smart Drainage System Control on August 17, 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.*