# DOCS II vs Rand Water

The clearest difference is update cadence: Rand Water at every 6 weeks against DOCS II's every 58 months. Rand Water also leads on iOS requirement (12.4 vs 15.0). 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.

DOCS II ships an update every 58 months, Rand Water every 6 weeks. The most recent releases landed on October 19, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | DOCS II | Rand Water |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/docs-ii/id1546600318/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 58 months | **Every 6 weeks** |
| Monetization | Free | — |
| Size | 91 MB | 32 MB |
| Requires iOS | 15.0 | **12.4** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Virtual Technology LLC](https://appshunter.io/developer/1546600320) | [STRIDE IT BUSINESS SOLUTIONS (PTY) LTD](https://appshunter.io/developer/1490108692) |

## What reviewers say

### DOCS II

[App page](https://appshunter.io/ios/app/docs-ii/id1546600318)

This app automates the capture and reporting of visible emission observations for air quality compliance. It uses location data, weather, and sun angles to document opacity levels, helping users avoid costly fines. The tool generates compliance archives for regulated sources.

**Highlights:** Automated Visible Emission Observation (VEO) capture, Integration with Google Maps, compass, and inclinometers, Real-time weather and sun angle data, Opacity level documentation, Automated VEO report generation, Compliance archive creation

**Features:** macOS Compatibility

**In-app purchases:** none


### Rand Water

[App page](https://appshunter.io/ios/app/rand-water-save-water-app/id6443777263)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DOCS II free?

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

### Is Rand Water free?

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

### Do DOCS II or Rand Water have ads?

Neither DOCS II nor Rand Water shows ads.

### Which is updated more often, DOCS II or Rand Water?

DOCS II ships an update every 58 months, and Rand Water every 6 weeks. Most recently, DOCS II was updated on October 19, 2026 and Rand Water on October 7, 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.*