# SWPPPTrack DOT vs Silt

The clearest difference is update cadence: Silt at monthly against SWPPPTrack DOT's every 4 months. SWPPPTrack DOT's advantage is iOS requirement (13.0 vs 15.1). 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.

SWPPPTrack DOT ships an update every 4 months, Silt monthly. Both last shipped on October 3, 2026.

## The numbers

| Metric | SWPPPTrack DOT | Silt |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (3 ratings)](https://appshunter.io/ios/app/swppptrack-dot/id1071830458/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Monthly** |
| Monetization | Free | — |
| Size | 19 MB | 35 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Web App Express Ltd](https://appshunter.io/developer/1029460006) | [INcontrol360 LLC](https://appshunter.io/developer/1702204134) |

## What reviewers say

### SWPPPTrack DOT

[App page](https://appshunter.io/ios/app/swppptrack-dot/id1071830458)

This app simplifies stormwater pollution prevention and compliance tracking for various organizations and professionals. It enables fast and easy field reporting, including inspections, issue identification, action item management, and photo documentation. The mobile application seamlessly syncs with custom database and workflow management systems.

**Highlights:** Field inspections, Issue identification, Action item management, Photo documentation, Plan viewing, Database syncing

**In-app purchases:** none


### Silt

[App page](https://appshunter.io/ios/app/silt-tracker/id6745343917)

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

**In-app purchases:** none


## Frequently asked questions

### Is SWPPPTrack DOT free?

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

### Is Silt free?

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

### Do SWPPPTrack DOT or Silt have ads?

Neither SWPPPTrack DOT nor Silt shows ads.

### Which is updated more often, SWPPPTrack DOT or Silt?

SWPPPTrack DOT ships an update every 4 months, and Silt monthly. Most recently, SWPPPTrack DOT was updated on October 3, 2026 and Silt on October 3, 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.*