# Know My Water vs GWL

The clearest difference is in-app purchases: GWL at none against Know My Water's 7. Know My Water's advantage is update cadence (every 3 months vs every 14 months). On price, ads, device support and iOS requirement there is nothing between them.

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

Know My Water ships an update every 3 months, GWL every 14 months. The most recent releases landed on September 8, 2026 and December 8, 2025 respectively.

## The numbers

| Metric | Know My Water | GWL |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/know-my-water/id1582657664/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 14 months |
| Monetization | Free with in-app purchases | — |
| Size | 31 MB | 10 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Know My Well, LLC](https://appshunter.io/developer/1582657666) | [Smart Sensor Devices AB](https://appshunter.io/developer/1518532284) |

## What reviewers say

### 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 |


### GWL

[App page](https://appshunter.io/ios/app/gwl/id6499316921)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Know My Water free?

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

### Is GWL free?

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

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

Neither Know My Water nor GWL shows ads.

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

Know My Water ships an update every 3 months, and GWL every 14 months. Most recently, Know My Water was updated on September 8, 2026 and GWL on December 8, 2025.

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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.*