# MyTapWater vs Tag

The clearest difference is in-app purchases: MyTapWater at none against Tag's 8. Tag's advantage is update cadence (every 5 days vs every 46 months) and iOS requirement (17.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Tag sells 8 in-app purchases, starting at $0.99 per month. MyTapWater asks for nothing beyond the download.

MyTapWater ships an update every 46 months, Tag every 5 days. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | MyTapWater | Tag |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/mytapwater/id1438457386/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 46 months | **Every 5 days** |
| Monetization | Free | — |
| Size | 29 MB | 25 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Nxtranet](https://appshunter.io/developer/346855612) | [Bread technologies inc](https://appshunter.io/developer/1476303481) |

## What reviewers say

### MyTapWater

[App page](https://appshunter.io/ios/app/mytapwater/id1438457386)

This app helps you understand the safety of your tap water. It provides information on common contaminants found in drinking water across the US, drawing from extensive water quality records. Reduce your exposure to potential pollutants with this guide.

**Highlights:** Tap water safety guide, Contaminant information, US drinking water quality records, Exposure reduction tips

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

**In-app purchases:** none


### Tag

[App page](https://appshunter.io/ios/app/tag-fast-water-tracker/id6746683045)

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| tag monthly | $0.99 | per month |
| monthly subscription | $0.99 | per month |
| Weekly Access | $1.99 | per 7 days |
| monthly subscription | $2.99 | per month |
| 3 month subscription | $2.99 | per 3 months |
| 3 month subscription | $3.99 | per 3 months |
| yearly access | $9.99 | per year |
| Yearly Access | $19.99 | per year |


## Frequently asked questions

### Is MyTapWater free?

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

### Is Tag free?

Tag is free to download, with in-app purchases available.

### Do MyTapWater or Tag have ads?

Neither MyTapWater nor Tag shows ads.

### Which is updated more often, MyTapWater or Tag?

MyTapWater ships an update every 46 months, and Tag every 5 days. Most recently, MyTapWater was updated on November 2, 2026 and Tag on October 30, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*