# OW_Mobile — Occultations - IOTA Observers

> Mobile companion for tracking and planning asteroidal occultation observations. (iPhone/iPad app by John Grismore.)

- Source: https://appshunter.io/ios/app/ow-mobile/id1490726741 (this page in markdown: same URL + `.md`)
- Developer: [John Grismore](https://appshunter.io/developer/948492187)
- Category: Education
- Price: Free
- Rating: 4.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 11.0 · 10 MB
- Languages: English
- Released: 2019-12-20
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/ow-mobile/id1490726741/reviews.md

## What is OW_Mobile?

OW Mobile provides integration with the OccultWatcher (OW) desktop application for tracking asteroidal occultations and planning their observation.

An existing OW account is required to use OW Mobile.

In the current version OW Mobile lists the user's My Events and provides details for each of them including:

• Event parameters such as date and time of the event; maximum duration and magnitude drop; star, moon and sun altitude
• Information about the star, including coordinates, designation and magnitudes
• Information about the asteroid such as type, diameter and rotational parameters
• Information about other observers' positions
•Weather forecast for all announced stations

Event reminders are also provided on your device.

## Key features

- Track asteroidal occultations
- Plan observation events
- View event parameters
- Access star and asteroid information
- See observer positions
- Get weather forecasts
- Receive event reminders

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/ow-mobile/id1490726741/reviews.md

### 4/5 — Very useful

*2020-01-08, version 1.0*

As someone who doesn't use Windows, this has been a great help. It allows me to check my events without having to fire up my Windows laptop. The only issue is, the dates it gives are very confusing. For example, I have an event at 02:18 Monday morning. The app calls that "Sunday night". The event isn't Sunday, it's Monday. I would much, much rather see that called the correct "Monday morning". Or just "Monday".

## Frequently asked questions about OW_Mobile

### What is OW_Mobile used for?

OW_Mobile is used to track and plan observations of asteroidal occultations, acting as a mobile companion to the OccultWatcher desktop application. It provides detailed event information, celestial body data, and weather forecasts.

### Do I need an account to use OW_Mobile?

Yes, an existing OccultWatcher (OW) desktop application account is required to use OW_Mobile. This allows for seamless integration and access to your saved event data.

### What kind of event details does OW_Mobile provide?

OW_Mobile lists event parameters such as date, time, maximum duration, magnitude drop, and altitudes of the star, moon, and sun. It also includes information about the star, asteroid, and other observers' positions.

### Does OW_Mobile offer weather forecasts?

Yes, OW_Mobile provides weather forecasts for all announced observation stations related to the occultation events you are tracking. This helps in planning your observation sessions effectively.

### Can I set reminders for occultation events with OW_Mobile?

Yes, OW_Mobile provides event reminders directly on your device. This ensures you don't miss important occultation events you have planned to observe.

### What devices is OW_Mobile compatible with?

OW_Mobile is compatible with iPhone, iPad, and iPod devices. It is designed for iOS users who are interested in astronomy.

### How often is OW_Mobile updated?

OW_Mobile was last updated on January 12, 2020, with version 1.0.1. While the last update was in early 2020, the app's core functionality for tracking and planning observations remains relevant for its users.

### What is the age rating for OW_Mobile?

OW_Mobile has an age rating of 4+. This indicates it is suitable for a wide range of users, including younger individuals interested in astronomy and space.

## Version history (last 1 release)

### 1.0.1 — 2020-01-12

• Adds a "authorization failure" alert when userid or password is incorrect.
• Adds a "zero events" alert when no events are currently announced on OccultWatcher Desktop.
• Modifies keyboard for userid to include "@" and "." for email addresses.
• Adds "JNow" annotation in Event Details RA/Dec line when appropriate.
• Changes "DE" label to "Dec" in RA/Dec line when epoch is JNow.

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## More apps by John Grismore

- [AstroFlashTimer](https://appshunter.io/ios/app/astroflashtimer/id1361880910)

All apps by John Grismore: https://appshunter.io/developer/948492187

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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 2026-06-10.*