# SURVIVALOS — 25+ Tools. Zero Internet.

> 25+ Tools. Zero Internet. (iPhone/iPad app by wu zhaodong.)

- Source: https://appshunter.io/ios/app/survivalos/id6759236432 (this page in markdown: same URL + `.md`)
- Developer: [wu zhaodong](https://appshunter.io/developer/1554727752)
- Category: Utilities, Reference
- Price: Free with in-app purchases
- Age rating: 12+
- Requires: iOS 17.0 · 24 MB
- Languages: English, French, German, Japanese, Korean, Chinese, Spanish, Chinese
- Released: 2026-03-04
- Data updated: 2026-06-25
- User reviews in markdown: https://appshunter.io/ios/app/survivalos/id6759236432/reviews.md

## What is SURVIVALOS?

SURVIVALOS is an offline-first emergency and outdoor preparedness toolkit for moments when the network is unreliable or unavailable.

OFFLINE EMERGENCY TOOLS
- One-tap SOS with coordinates and signal options
- Compass, GPS coordinates, sunrise and sunset reference
- Morse code, flashlight, radio frequency notes, whistle, water purification timer, timer
- Ruler, level, unit converter, knot guide, supply checklist
- Secure vault and emergency contacts

REFERENCE LIBRARIES
- Survival knowledge for shelter, water, fire, navigation, signaling, and preparedness
- First aid references for common emergency situations
- Plant notes for edible, medicinal, and poisonous plants
- Medication notes and dosage calculator for reference use

PRIVACY-FIRST BY DESIGN
SURVIVALOS works offline, requires no account, and does not collect personal data. Sensitive notes and files can be stored locally in the secure vault.

SURVIVALOS Pro is a one-time purchase that unlocks the full toolkit and offline databases. No subscription.

Important: medical and plant information is for reference only and does not replace professional medical advice, emergency services, or expert identification.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| SURVIVALOS Pro | $6.99 | one-time |



## Version history (last 2 releases)

### 1.1.1 — 2026-05-09

Adds a Water Purification Timer with boil, high-altitude boil, and chemical-treatment countdowns, plus refreshed App Store screenshots and localized store copy.

### 1.0 — 2026-03-05

No release notes.

## More apps by wu zhaodong

- [KANIKANI](https://appshunter.io/ios/app/kanikani/id1554727750)
- [Dream Poet](https://appshunter.io/ios/app/dream-poet/id6758596377)
- [MindWoods](https://appshunter.io/ios/app/mindwoods/id6759215622)
- [WakeFort](https://appshunter.io/ios/app/wakefort/id6759413354)

All apps by wu zhaodong: https://appshunter.io/developer/1554727752

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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 2026-06-25.*