# SolidGuide vs Know My Water

The clearest difference is in-app purchases: SolidGuide at none against Know My Water's 7. SolidGuide also leads on update cadence (every 6 weeks vs every 3 months). Know My Water's advantage is iOS requirement (13.0 vs 15.0). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Know My Water sells 7 in-app purchases, starting at $0.99 per month. SolidGuide asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for SolidGuide against 5.0 for Know My Water. Both are backed by a comparable volume of ratings — 3 and 3 respectively.

SolidGuide ships an update every 6 weeks, Know My Water every 3 months. The most recent releases landed on October 5, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | SolidGuide | Know My Water |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/solidguide/id1522550825/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/know-my-water/id1582657664/reviews) |
| Number of ratings | 3 | 3 |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 3 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 3 MB | 31 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [APTech Group](https://appshunter.io/developer/1009293142) | [Know My Well, LLC](https://appshunter.io/developer/1582657666) |

## What reviewers say

### SolidGuide

[App page](https://appshunter.io/ios/app/solidguide/id1522550825)

This app provides water treatment professionals with quick access to product information and essential calculators for cooling tower, boiler, and closed-loop systems. It features a user-friendly catalog, equipment details, intelligent surveys, and searchable resources like spec sheets and drawings.

**Highlights:** User-friendly product catalog, Comprehensive equipment information, Intelligent surveys, Upgraded calculators, Searchable resources (spec sheets, drawings, case studies)

**Features:** macOS Compatibility

**In-app purchases:** none


### Know My Water

[App page](https://appshunter.io/ios/app/know-my-water/id1582657664)

Manage your well water system with this app. Store detailed information about your well, pump, and filters, and upload documents. Set maintenance reminders, use a diagnostic tool for issues, and connect with local professionals for repairs.

**Highlights:** Well system profile creation, Document and photo uploads, Maintenance reminders, Self-diagnosing tool, Access to well resources, Connect with local professionals

**Features:** macOS Compatibility

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 2 Wells | $0.99 | per month |
| 3-5 Wells | $4.99 | per month |
| 6-10 Wells | $9.99 | per month |
| 11-20 Wells | $19.99 | per month |
| 21-50 Wells | $49.99 | per month |
| 51-100 Wells | $99.99 | per month |
| 101-150 Wells | $149.99 | per month |


## Frequently asked questions

### Is SolidGuide free?

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

### Is Know My Water free?

Know My Water is free to download, with in-app purchases available.

### Which has better reviews, SolidGuide or Know My Water?

SolidGuide and Know My Water are both rated 5.0 out of 5 on the App Store, from 3 and 3 ratings respectively.

### Do SolidGuide or Know My Water have ads?

Neither SolidGuide nor Know My Water shows ads.

### Which is updated more often, SolidGuide or Know My Water?

SolidGuide ships an update every 6 weeks, and Know My Water every 3 months. Most recently, SolidGuide was updated on October 5, 2026 and Know My Water on September 24, 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.*