# NEOscan — Discover Near-Earth Objects

> Discover and visualize near-Earth objects with NASA data. (iPhone/iPad app by Carlos Anderson.)

- Source: https://appshunter.io/ios/app/neoscan/id1384305727 (this page in markdown: same URL + `.md`)
- Developer: [Carlos Anderson](https://appshunter.io/developer/1095157042)
- Category: Education, Reference
- Price: Free
- Rating: 2.70/5 from 7 App Store ratings · 6 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.0 · 37 MB
- Released: 2018-07-25
- Data updated: 2026-06-24
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/neoscan/id1384305727/reviews.md

## What is NEOscan?

This app helps you discover near-Earth objects (NEOs). Filter by their type (asteroid or comet), closest approach time, closest distance, and diameter.

For each NEO, the app shows you an Earth-Moon model with the asteroid (or comet) indicated at the proper location. The app also helps you understand the NEO's size by comparing it to a familiar object.
 
The data on NEOs is provided by NASA's Small Body Database (SBDB) and SBDB Close-Approach Data APIs.

## Key features

- Discover asteroids and comets
- Filter by type, approach time, distance, and diameter
- Earth-Moon model visualization
- Size comparison to familiar objects
- Data from NASA's Small Body Database

## Recent user reviews (6 of 6)

All indexed reviews: https://appshunter.io/ios/app/neoscan/id1384305727/reviews.md

### 5/5 — This app is perfect, -exactly- what i searched for, thank you! :)

*2022-01-23, version 1.1*

I would give it 10 stars if possible, this app works perfectly like a charm, it can even process extremely large lists of asteroids (eg. if you combine min.size with max.distance and max.timespan). And everything for free! Thank you very much to the very generous developer(s). A big thumbs up from me.

### 1/5 — kein Kontakt zum Server

*2021-08-03, version 1.1*

Funktioniert nicht, weder mit iPhone 12 Pro Max noch mit iPad Pro, aktuelles iOS. Verbindet nicht zum Datenserver.
Wird jetzt gleich gelöscht…

### 1/5 — Useless

*2021-04-06, version 1.1*

Had this for a month what a load of rubbish don’t bother with it it tells you nothing

### 4/5 — Basic but good

*2020-08-16, version 1.1*

On iPhone 7 Plus works ... the info is basic ... but is great app to get fast update on those pesky rocks ... homing in on Earth.

### 5/5 — Very useful app

*2020-04-11, version 1.1*

I’ve been looking for an app like this for a while, and it seems to take the data straight from JPL so very accurate

### 1/5 — Could not get to work

*2019-08-24, version 1.1*

Nothing I tried could get it to show any information.

## Frequently asked questions about NEOscan

### What kind of near-Earth objects can I discover with NEOscan?

NEOscan allows you to discover both asteroids and comets. You can filter these objects by their type to find specific celestial bodies of interest.

### How does NEOscan help me understand the size of these objects?

The app provides size comparisons to familiar objects, helping you visualize the scale of asteroids and comets. This makes it easier to grasp their dimensions.

### Where does NEOscan get its data from?

All data regarding near-Earth objects in NEOscan is sourced directly from NASA's Small Body Database (SBDB) and SBDB Close-Approach Data APIs.

### What devices is NEOscan compatible with?

NEOscan is designed for Apple devices and is supported on iPhone, iPad, and iPod. It requires iOS 4.3 or later.

### How often is NEOscan updated?

The latest version of NEOscan is 1.1, which was last updated on July 1, 2019. While updates have not been frequent recently, the core data is sourced from NASA.

### What is the age rating for NEOscan?

NEOscan has an age rating of 4+, making it suitable for a wide range of users interested in learning about space.

### Does NEOscan have ads?

No, NEOscan is ad-free. The application does not contain any advertisements, providing an uninterrupted user experience.

### What are the main learning benefits of using NEOscan?

NEOscan enhances learning by providing interactive visualizations of celestial bodies and their trajectories. It helps users understand astronomical concepts like orbital mechanics and object size through direct engagement with NASA data.

## Version history (last 2 releases)

### 1.1 — 2019-07-01

• You can now filter by NEO type: asteroid or comet (or both).
• Comets without an estimated diameter are now included in the results.
• Detailed views of NEOs now show their most accurate diameter available.
• Fixed minor bugs.

### 1.0 — 2018-06-24

No release notes.

## Apps similar to NEOscan

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Universal Numbers: Count to 1M](https://appshunter.io/ios/app/universal-numbers-count-to-1m/id6504361759) | 5.0 (4) | Free | Education |
| [Mars LTE](https://appshunter.io/ios/app/mars-lte/id1623085876) | 5.0 (1) | Free | Education |
| [Comet Tracker App](https://appshunter.io/ios/app/comet-tracker-app/id6737527992) | — | Free | Education |
| [NEOScope](https://appshunter.io/ios/app/neoscope/id6477293859) | 5.0 (1) | $0.99 | Education |
| [Mars Info Lite](https://appshunter.io/ios/app/mars-info-lite/id1093071808) | 4.4 (200) | Free | Education |
| [Univerzoom 2D Size Comparison](https://appshunter.io/ios/app/univerzoom-2d-size-comparison/id1598332779) | 4.6 (36) | Free | Education |

## More apps by Carlos Anderson

- [Leafscan](https://appshunter.io/ios/app/leafscan/id1254892230)

All apps by Carlos Anderson: https://appshunter.io/developer/1095157042

---

*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 2026-06-24.*