OnStep Controller2 is made and published by OnCue. AppBrain is an independent app data site and isn't affiliated with OnCue. The app name, icon, screenshots and description belong to OnCue and are shown as published on Google Play.

Pros & Cons

OnStep-specific compatibility for DIY telescope mounts
Wireless control via Bluetooth or Wi‑Fi
Broad catalog support (NGC/IC, Herschel 400, Messier, bright stars)
Free app with long-standing presence and solid user sentiment

Does not emphasize camera control, imaging features, or night-sky visualization found in some competitors
Misses common imaging-oriented keywords (e.g., zoom, image capture) that appear in competitor listings

About OnStep Controller2

OnStep Controller2 is an education app developed by OnCue.

Install Statistics

OnStep Controller2 has been installed 20 thousand times. In the last 30 days, the app was installed 170 times.

User Ratings

OnStep Controller2 is rated 4.37 out of 5 stars. The rating is based on 210 ratings.

App Information

OnStep Controller2 is freely available from Google Play. The app size is 4.36 MB. The latest version available is 2.660. The last update was on March 1, 2025.

Technical Requirements

OnStep Controller2 requires Android 4.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play since November 2016.

Description by OnCue (from Google Play)

OnStep is a DIY computerized Goto controller for Telescope mounts. This App controls most functions through Bluetooth or Wifi from your Android cell phone or tablet.

More data about OnStep Controller2

Price	Free
Total installs	20 thousand
Recent installs	170
Rating	4.37 based on 210 ratings
Ranking	Not ranked
Version	2.660
App size	4.36 MB
Number of libraries	22
Designed for Android	4.0+
Suitable for	Everyone
Ads	No ads

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Screenshots

Screenshots by OnCue, from the Google Play listing

Official page on Google Play

Alternatives to OnStep Controller2

Google Play Rating history and histogram

140

Installs over time

OnStep Controller2 has been installed 20 thousand times. Over the past 30 days, it has been installed 170 times.

Changelog of OnStep Controller2

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Developer information for OnCue

OnCue

hjd1964@gmail.com

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Comments on OnStep Controller2 for Android

★★★★★ vzr · Oct 12, 2021

This app is the greatest advantage Instep controller by far. It is an effective replacement for both Smart Hand Controller and Smart Web Server (Wemos) because it works with internal Bluetooth if ESP32S is used in build. Also, there are other perks like polar alignment correction and smart tracking correction... Only missing tool is polar hour angle calculator

★★★★★ Peter Baldwin · Sep 19, 2021

Converted my eq3-2 to a goto mount amazing work Howard, Khalid, David and all involved in this awesome open source project. Thanks guys!

★★★★★ Carlos Ferraz · Jan 5, 2017

It's an incredible work! This app, with the open source Instep project, works really nice. I converted my eq3-2 with default motors to a goto spending less than 70 U$D (about 200 BRL). My slew rate is just about 50x thanks to the motors only, but I don't care. I can wait a minute or two!

★★★★★ Murat Isik · Jul 26, 2019

Having such an app to complement an open-source telescope controller software is of unmatched value. I am a true believer in Instep.

Google Play Rankings for OnStep Controller2

This app is not ranked

Technologies used by OnStep Controller2

8 permissions · 22 libraries

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OnStep Controller2