Sputnik!

Name: Sputnik!
Rating: 4.7 (731 reviews)
Author: Applicate Ltd

By: Applicate Ltd App

ISS, Starlink & Satellites

Overview

Version:

3.0.9

Last updated: 2026-05-11

Ranking

#67,284 ▼ 150

Overall

Features & Capabilities

Sputnik! is an easy-to-use tool for predicting when the International Space Station will pass overhead or when a bright satellite will be visible in the skies above. It offers second-by-second sighting countdowns and automatic satellite data downloads so you can plan viewing sessions from anywhere.

Key features include ISS and satellite prediction with second-by-second accuracy, Starlink train detection, location-based alerts and reminders, compass direction and elevation to guide you, landscape orientation, sharing sightings, offline calculations after data download, flexible location input (GPS, map, or manual), favorites, and optional audio cues. An Apple Watch companion keeps you updated on the go. Note: the app is ad-supported.

User Growth & Download Statistics

App Navigation & Mapping Photography Education Weather

By:

Applicate Ltd

Rating:

4.70

(731)

Version:

3.0.9 Last updated: 2026-05-11

Version code:

885489984

Creation date:

2010-10-07

Compatible devices:

Size:

34.99MB

URLs:

Website ,Privacy policy

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-07-18

Compare stats and ranking:

Ranking

# 67,284 ▼ 150

Other platforms

Sputnik! (v3.0.9)

10,043 5.00

(40)

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.

Developed by:

Applicate Ltd

Apple Apps Store

https://apps.apple.com/us/app/sputnik/id393001070

Website:

https://sputnikapp.info

User Reviews

Sputnik! is a long-running satellite tracker praised for locating ISS/Hubble and other satellites with magnitudes and location-based orientation, and for being easy to use. However, data update issues on iOS devices, broken Iridium flare tracking, missing reference information and filtering/alert features, and concerns about ongoing maintenance are common criticisms. Overall, it remains valued for basic spotting but suffers from maintenance and feature gaps that multiple users mention.

Pros

Tracks ISS, Hubble, and other satellites with magnitude data and device orientation based on your location.
Easy to use and generally reliable for satellite spotting.
Long-standing app that is widely used by astronomy clubs and for public observing nights.
Provides clear pass information that helps users locate satellites in the sky.

Cons

Satellite data update/refresh broken on iOS devices (update button does nothing; warnings like 'data has never been downloaded' appear across iPhones and iPads with various iOS/iPadOS versions).
Iridium flare tracking no longer works or is no longer displayed in the app.
Lacks helpful reference information and explanations (e.g., shadow/visibility rules) and missing user-requested features like filters (by magnitude, horizon) and alerts.
Perceived lack of ongoing maintenance/active development, with some users feeling the app is abandoned.

Recent reviews

I'm not sure how this app has high ratings and it used to be worthy of them. Somehow, even with a currently updated version, it will not download satellite data.

by gi*****, 2026-05-11

I have had this out for years! Back when it tracked iridium flares. Now it tracks the ISS, Chinese station, and Hubble. I love this app. It shows the magnitudes and device orientation from your location. Although I do miss the iridium flares.