Comparison

Magna Calc vs ScopeBoss

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Magna Calc

Calculate telescope magnification easily. Supports various eyepiece focal lengths and Barlow lens options from 1x to 5x. Essential tool for amateur and professional astronomers.

Highlights
  • Telescope focal length input
  • Eyepiece focal length input
  • Barlow lens option (1x-5x)
  • Magnification calculation
  • Supports millimeters
Features
Read full description

Astronomers often need to calculate the magnification derived from their telescope focal length and eyepiece. MagnaCalc provides an easy way to calculate this value for both amateur and professional astronomers. Additionally, Magna Calc provides a 2x to 5x Barlow lens option. Whether you're an amateur or professional astronomer, you'll find Magna Calc helpful in your everyday passion for astronomy. Magna Calc Features... - Telescope Focal Length (in Millimeters) - Eyepiece Focal Length (in Millimeters) - Barlow Lens Option (1x, thru 5x) - Magnification Calculation

About

ScopeBoss

Control your Meade LX200GPS telescope remotely using your iPhone or iPad. This app emulates the Autostar II controller, offering convenient access to telescope functions through intuitive tabs for slewing, object catalogs, and custom buttons.

Highlights
  • Emulates Autostar II controller
  • WiFi-to-Serial adapter communication
  • Keypad and Slew control tabs
  • Gesture-based slewing
  • Customizable function buttons
  • Object catalogs with over 21,000 entries
  • Micro focuser control
Read full description

ScopeBoss emulates the Autostar II controller for Meade LX200GPS telescopes. It communicates with the scope through a WiFi-to-Serial adapter, such as the SkyFi by Southern Stars or the GC Wi-Fi Adapter, and provides complete control from iPhone or iPad. Using your telescope has never been so simple, convenient and reliable. ScopeBoss arranges the Autostar II functionality into logical, convenient tabs, making important but hard-to-find operations immediately accessible. Keypad Tab The Keypad Tab provides the LCD display and the primary keypad buttons (minus slew arrows, which are found on their own separate tab) of the real, Autostar II hand-box controller. Most LX200GPS users will find much functionality here familiar, including numeric keys for data entry and hot button short cuts, as well as scrolling arrows for object and option lists. The Enter, Mode, and Go To keys provide their full Autostar II functionality, including long presses for syncing, displaying or entering RA/Dec coordinates, and initiating spiral searches. "Flipping" to the back side of the Keypad tab reveals the Connection tab. Connection between the iPhone or iPad’s WiFi and the scope’s WiFi-to-Serial adapter is established in this tab. Input fields permit specification of the adapter’s specific IP Address and port number. Slew Tab Manually slewing the scope is performed in the Slew Tab. The primary slewing method uses Up, Down, Left and Right arrow buttons in the same manner as the real Autostar II. In addition, segmented switches provide control of the slew speed, as well as the ability to reverse slewing direction to match the optical system. “Flipping” to the back side of the tab reveals a second, gesture-based slewing method. This method uses finger drag gestures to slew the scope. In addition, a third method slews the scope according to the tip and tilt of the iPhone or iPad. Btn/Menu Tab This tab makes much of the operation of the LX200GPS easier and more accessible. The front side of the tab provides customizable buttons for important functions such as Alignment methods, Parking, Initializing, Guided Tours and more. The back side presents the entire operation menu of the Autostar II in an expandable/collapsible table. This operation menu can be imported directly from the scope, or the default menu can be used. Catalogs Tab This tab provides a choice of two star catalogs and one Messier catalog, totaling over 21,000 objects. Each catalog is displayed in a scrollable, searchable table. Tapping on an object in the table displays additional object information and offers the option to Go To the object or add it to Favorites. More… Additional convenience functions are provided in the More… tab. Features include, displaying current coordinates or slewing to input coordinates (RA/Dec, Alt/Az), controlling the Meade micro focuser, entering manual commands, setting the scope from iPhone or iPad location and time, and more.

Screenshots

Magna Calc4 screens
ScopeBoss4 screens

Verdict

The call

The clearest difference is price: ScopeBoss at Free against Magna Calc's $0.99. ScopeBoss also leads on rating (4.0 vs 3.0) and device support (3 vs 1). On update cadence, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

ScopeBoss is free to download; Magna Calc costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

ScopeBoss holds the better App Store score, 4.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 6 respectively.

UpkeepUpdate frequency

Magna Calc ships an update every 37 months, ScopeBoss every 33 months. The most recent releases landed on October 23, 2026 and October 3, 2026 respectively.

Scorecard6 real differences · 4 level
Magna Calc versus ScopeBoss: the parameters behind the verdict, then further details
ParameterMagna CalcScopeBoss
Price$0.99Free — better
Rating3.0 (2 ratings)4.0 (6 ratings) — better
Positive reviews25.0% of reviews—
Number of ratings26 — better
Update frequencyEvery 37 monthsEvery 33 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS18.012.0 — better
Further details — not scored
Size1 MB19 MB
Age rating4+4+
DeveloperGreg PaskalLodewijk Bonebakker

Customer experience

Magna Calc

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews4 reviews
Positive25.0%
Neutral0.0%
Negative75.0%

ScopeBoss

All ratings6 ratings
Positive66.7%
Neutral16.7%
Negative16.7%

In-app purchases

None

Magna Calc

No in-app purchases

None

ScopeBoss

No in-app purchases

Questions

Is Magna Calc free?
Magna Calc costs $0.99, with no in-app purchases.
Is ScopeBoss free?
ScopeBoss is free to download, with no in-app purchases.
Which has better reviews, Magna Calc or ScopeBoss?
ScopeBoss is rated higher. Magna Calc averages 3.0 out of 5 from 2 ratings, while ScopeBoss averages 4.0 from 6 ratings.
Do Magna Calc or ScopeBoss have ads?
Neither Magna Calc nor ScopeBoss shows ads.
Which is updated more often, Magna Calc or ScopeBoss?
Magna Calc ships an update every 37 months, and ScopeBoss every 33 months. Most recently, Magna Calc was updated on October 23, 2026 and ScopeBoss on October 3, 2026.

Other comparisons