ScopeTool 4+

H Crossley

Designed for iPhone

    • 3.8 • 4 Ratings
    • Free

iPhone Screenshots


ScopeTool by Krydo helps as you set up, align and use your telescope for a good night's viewing. It includes the tools

• Compass & level
• Polaris hour angle and transit calculator
• Positions for the main satellite moons of Jupiter and Saturn*
• Red or white flashlight, with screen lock and timer functions

ScopeTool can find your location by either using your device's location services (eg GPS), or you can enter your coordinates manually.

The Settings tool allows you to tailor the app to your needs; turn off tools you don't use so it's easy to select the ones you want in the dark.

More tools are coming; visit or tweet us on @KrydoDev to keep up with their progress, and let us know what would be useful to you!

* For Jupiter, the four Galilean moons are shown. For Saturn, satellites I-VIII are included. A limiting magnitude control allows you to hide objects that are too faint to be seen, so you can match the diagram to what you can see. The location of Jupiter's Great Red Spot and attitude of Saturn's rings are also included.

What’s New

Version 1.6

Updated ephemeris for Jupiter GRS.
Maintenance release.

Ratings and Reviews

3.8 out of 5
4 Ratings

4 Ratings

FreeAppSeeker ,


I've used this app for a little over a year now to help with aligning my Atlas EQ-G mount. It does a perfect job and the display matches nicely with the reticle in my mount's polar alignment scope. The built-in data features are also very handy for setting the SynScan controller, too. Highly recommended-- and a steal as it's free!

Jack swaton ,

Sweet! And very simple and clean.

This is immensely helpful as I try and polar align my scope. Having a bubble level and true north compass on one screen is great. Really love the polar scope image saved my back.

App Privacy

The developer, H Crossley, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.

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