# PlainWater - Water Safety — Water safety, offline, cited

> Water safety, offline, cited (iPhone/iPad app by Bhim Upadhyaya.)

- Source: https://appshunter.io/ios/app/plainwater-water-safety/id6804133772 (this page in markdown: same URL + `.md`)
- Developer: [Bhim Upadhyaya](https://appshunter.io/developer/1886342738)
- Category: Medical, Health & Fitness
- Price: Free with in-app purchases
- Age rating: 17+
- Requires: iOS 17.0 · 3 MB
- Languages: American English
- Released: 2026-09-21
- Data updated: 2026-10-09

## What is PlainWater?

Water is the most basic thing every human — and every animal — needs after oxygen. Yet the expertise to find, test, and make water safe to drink is normally locked behind labs, NGOs, and public-health departments. PlainWater puts it directly in your pocket, offline — because the roughly 2 billion people who need it most often have no signal and no money for a lab test, and even in wealthy countries, boil-water advisories and disasters knock out safe water routinely.

82 features across 8 modules, entirely on-device:

• PURIFICATION — boiling (altitude-adjusted), bleach/chlorine dosing calculator, purification tablets, SODIS, filtration, distillation, DIY builds (biosand, ceramic pot), and more — every method with exact, sourced numbers, not rules of thumb.
• ILLNESS & REHYDRATION — symptom guides for cholera, giardia, dysentery, typhoid; a red-flag triage that tells you when to seek help now; a home ORS (oral rehydration) calculator using the WHO-standard ratio; age-specific guidance for infants, children, elderly, and immunocompromised people.
• EVERYDAY HEALTH — how much water you actually need day to day, overhydration risk, mild dehydration's effect on mood and focus, pet and animal water hazards (blue-green algae is often fatal to dogs within hours), recreational swimming safety.
• TEST KIT & METER INTERPRETATION — turn a strip, meter, or kit color into a decision.
• SOURCING & STORAGE — emergency water sourcing, storage best practices, well and rainwater safety, a water-needs calculator, a disaster-kit rotation reminder.
• REGION & DISASTER GUIDANCE — boil-water-advisory checklists, an interactive "is my tap water safe" decision tree, flood/earthquake/hurricane/wildfire-specific guidance (free on principle — you need this most exactly when you can least afford to pay for it).
• ACCESSIBILITY — full-text search, audio read-aloud, icon-first mode for low-literacy users, screen-reader support, color-reference swatches, offline water-point mapping with saved pins, PDF export for a physical go-bag backup.

Every guidance claim is cited to a free, public, authoritative source — WHO, CDC, EPA, USGS, Ready.gov/FEMA, the American Red Cross, UNICEF/WHO's Joint Monitoring Programme, and CAWST. Tap any citation to read the source yourself. No paywalled journals, no commercial or vendor sources — ever.

100% ON-DEVICE, ALWAYS:
• No accounts. No servers, ever — not now, not as a future paid tier.
• Optional sync of your own data (a saved plan, reminders) uses only your device's own iCloud — never a company-run server.
• No ads. No tracking.

A generous free tier covers every life-critical feature, permanently — illness recognition, core purification methods, emergency sourcing, and all disaster-triggered guidance. Deeper, enthusiast, and homeowner-convenience content unlocks with a one-time "PlainWater Pro" purchase, smaller à la carte packs, or — if you'd rather not pay all at once — a monthly or yearly subscription that unlocks exactly the same content. Both options are handled entirely by Apple's StoreKit; PlainWater itself runs no server of any kind, for either payment path.

PlainWater provides educational guidance, not diagnosis or water-testing certification. When in doubt, it always tells you to treat or boil — and to seek professional medical care for symptoms of illness.

Terms of Use (EULA): https://equalinformation.com/terms-plainwater.html

Apple EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| PlainWater Unlimited (Monthly) | $2.99 | per month |
| PlainWater Unlimited (Yearly) | $19.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| PlainWater Pro | $9.99 | one-time |
| Homeowner & Reference Pack | $2.99 | one-time |
| Test Kit Reader Pack | $2.99 | one-time |
| Advanced Purification Pack | $2.99 | one-time |
| Traveler & Scenario Pack | $2.99 | one-time |


## Is PlainWater safe?

Not enough ratings yet to assess PlainWater.

## Is PlainWater legit?

PlainWater - Water Safety appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for PlainWater is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0 — 2026-09-21

No release notes.

## More apps by Bhim Upadhyaya

- [Nutrisize](https://appshunter.io/ios/app/nutrisize/id6760806833)
- [Nutrisize Pro](https://appshunter.io/ios/app/nutrisize-pro/id6762107162)
- [Nutrisize Health](https://appshunter.io/ios/app/nutrisize-health/id6762168316)
- [Kindly Wellness](https://appshunter.io/ios/app/kindly-wellness/id6762240167)
- [PlainDental](https://appshunter.io/ios/app/plaindental/id6763691908)
- [CareCircle Caregiving](https://appshunter.io/ios/app/carecircle-caregiving/id6763921508)

All apps by Bhim Upadhyaya: https://appshunter.io/developer/1886342738

## Related topics

[sprinkle water](https://appshunter.io/ios/topics/sprinkle-water)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-09.*