# Water Vision vs DateMark

The clearest difference is in-app purchases: Water Vision at none against DateMark's 1. Water Vision also leads on ads (none vs shown) and iOS requirement (9.0 vs 17.6). DateMark's advantage is update cadence (every 4 days vs every 4 months). On price and device support there is nothing between them.

Both are free to download. DateMark sells 1 one-off in-app purchase. Water Vision asks for nothing beyond the download.

Water Vision ships an update every 4 months, DateMark every 4 days. The most recent releases landed on October 6, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Water Vision | DateMark |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 4 days** |
| Monetization | Free | — |
| Size | 28 MB | 6 MB |
| Requires iOS | **9.0** | 17.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Invision Enterprises Limited](https://appshunter.io/developer/1198406477) | [Tim Tharaldsen](https://appshunter.io/developer/1840919348) |

## What reviewers say

### Water Vision

[App page](https://appshunter.io/ios/app/water-vision/id1198406478)

Monitor your water tank levels remotely with this system. It tracks usage, rainfall, and alerts you to potential leaks or low levels, offering peace of mind and control over your water supply from anywhere.

**Highlights:** Real-time water level monitoring, Usage and rainfall tracking, Leak and abnormal usage alerts, Customizable low-level alerts, Remote control of pumps and irrigation, Cloud access from anywhere

**Features:** macOS Compatibility

**In-app purchases:** none


### DateMark

[App page](https://appshunter.io/ios/app/datemark/id6757658837)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DateMark Premium | $3.99 | one-time |


## Frequently asked questions

### Is Water Vision free?

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

### Is DateMark free?

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

### Do Water Vision or DateMark have ads?

DateMark shows ads; Water Vision does not.

### Which is updated more often, Water Vision or DateMark?

Water Vision ships an update every 4 months, and DateMark every 4 days. Most recently, Water Vision was updated on October 6, 2026 and DateMark on October 4, 2026.

---

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