Comparison

Field Strength Estimator vs spacedesk

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

Head to head
About

Field Strength Estimator

This app estimates field strength and power flux density based on transmitted power, frequency, and antenna gain. It calculates received power at a receiver and automatically converts power flux density to electric and magnetic field strength. It provides theoretical best-case values, not accounting for real-world propagation impairments.

Highlights
  • Calculates power flux density
  • Estimates electric and magnetic field strength
  • Calculates received power
  • Considers antenna gain and transmitted power
  • Assumes theoretical best-case conditions
Features
Read full description

The program Field Strength and Power Estimator calculates power flux density, electric and magnetic field strength from the transmitted power, associated frequency and gain of the transmitting antenna. Additionally the input power into a receiver with 50 Ohm input impedance is calculated from the gain of the receiving antenna. The program automatically converts power flux density into electric and magnetic field strength. Depending on the transmitted frequency, various parameters influence the received power and field strength, such as non-line-of-sight propagation, changes in polarisation, reflections, and multi-path propagation affect the true values. Additionally antenna VSWR and cable losses have to be considered. The program Field Strength and Power Estimator does not consider these impairments. It assumes conditions, that are close to the best possible theoretical values. This is why we say the program is an Estimator, not a Calculator. This application is based on the application note: "1MA85: Field Strength and Power Estimator" by Rohde & Schwarz GmbH & Co. KG ( http://www.rohde-schwarz.com/appnote/1MA85 )

About

spacedesk

Extend your Windows PC's desktop to another device wirelessly or via USB. Use your tablet or phone as a drawing tablet or a portable second monitor for travel and productivity.

Highlights
  • Windows desktop extension
  • Screen mirroring
  • Remote desktop viewer
  • Drawing tablet functionality
  • Wireless display monitor
  • USB display monitor
  • Remote control
Features
Read full description

Windows computer desktop extension, mirroring and remoting tool for WiFi, USB or LAN. Supports applications like: - Screen Cast (to television, tablet or smart phone) - Desktop Remoting Viewer (over USB and Local Area Network) - Drawing Tablet (drawing and painting with digitizer pen) - Wireless Display Monitor (similar to Miracast, RDP, AirPlay and Sidecar) - USB Display Monitor (similar to DisplayLink) - Remote Access (over USB link, WiFi and LAN) - Remote Control (wireless and wired) - Screen Streaming (including audio) - Screen Mirroring (over the air and via cable) - Screen Cloning - Extension Screen - Windows Desktop Workspace Extension - Windows Desktop Duplication (clone) - Windows Desktop Streaming - Personal Computer Desktop Presenter - Virtual Monitor for Desktop PC - Second Display On The Go - TV, mobile or tablet screen as Side by Side Display - Alternative to Miracast, AirPlay and Sidecar - Portable Multimonitor Screen for Travel - Access main computer from mobile device - Software KVM-Switch (Keyboard Video Mouse) - Software Display Hub - Software Display Switch - Projector Screen Viewer - Input Console - Input Terminal - Tablet Input Device - Windows Graphics Tablet App - Windows Tablet as sketchbook for drawing artwork - Creative Video Wall App - Video Wall w. Any Angle Rotation Instruction manual, documentation and detailed setup: https://manual.spacedesk.net Quick Guide: 1. Install spacedesk DRIVER software for Windows Primary PC. Download from: https://www.spacedesk.net 2. Install this spacedesk Viewer app for iOS. 3. Open this spacedesk Viewer app and connect to Windows Primary PC. Connection: USB or LAN (Local Area Network). LAN: Driver and Viewer must be on the same network - via Mobile Hotspot Note: Does NOT need internet connection! The Windows Primary Machine running spacedesk Driver... ...supports Windows 11, Windows 10 or Windows 8.1. Apple Macs are not supported. Dual monitor and multi monitor configurations are supported. Needs spacedesk drivers installed. Download: https://www.spacedesk.net The Secondary Machine or Device (iOS network display client)... ...is an iPad, iPhone or device running the spacedesk iOS app. The wireless and wired cable connection... ...connects Windows Primary Machine to Secondary Machine or Device over USB, LAN (Local Area Network e.g. Ethernet) and/or WLAN (Wireless Local Area Network). Local Area Network connection can be wired or over WiFi. TCP/IP network protocol is required. More information on: https://www.spacedesk.net Instruction Manual: https://manual.spacedesk.net/ Support Forum: https://forum.spacedesk.net/ Facebook: https://www.facebook.com/pages/spacedesk/330909083726073 Youtube: https://www.youtube.com/watch?v=YkWZSwBD-XY — LIGHTNING FAST — To achieve unparalleled performance and display quality with zero lag, use cable connection over USB or Local Area Network. Try to circumvent WiFi and network routers. E.g. configure Windows PC or iOS device as WiFi Access Point (Hotspot) and connect directly before connecting spacedesk. Please check chapter "Performance Tuning" in the instruction manual: https://manual.spacedesk.net — REMOTE CONTROL INPUT AND OUTPUT PERIPHERAL ACCESSORIES — - Touchscreen (multitouch and single touch - Touchpad - Mouse Pointer Control - Keyboard - Pressure Sensitive Stylus Pen - Audio Speaker — SETTINGS AND OPTIONS — - Landscape View - Portrait View — SYSTEM SUPPORT — Supported are iOS versions 11.x+ (including MacOS on Apple Silicon Chips) and PCs with Windows 11, Windows 10 and Windows 8.1. Apple Macs are not supported.

Screenshots

Field Strength Estimator2 screens
spacedesk4 screens

Verdict

The call

The clearest difference is in-app purchases: Field Strength Estimator at none against spacedesk's 11. Field Strength Estimator also leads on review sentiment (100% vs 71%). spacedesk's advantage is rating (4.7 vs 4.3) and update cadence (every 3 weeks vs every 13 months). On price, ads, device support and iOS requirement 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

Both are free to download. spacedesk sells 11 one-off in-app purchases. Field Strength Estimator asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

spacedesk holds the better App Store score, 4.7 against 4.3. That said, the two scores are not equally well evidenced: spacedesk has 2.3K ratings behind it against 4, so its average is the more settled of the two. Written reviews complicate that: 100% of Field Strength Estimator's written reviews are positive against 71% of spacedesk's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Field Strength Estimator ships an update every 13 months, spacedesk every 3 weeks. The most recent releases landed on October 23, 2026 and October 26, 2026 respectively.

Scorecard6 real differences · 4 level
Field Strength Estimator versus spacedesk: the parameters behind the verdict, then further details
ParameterField Strength Estimatorspacedesk
PriceFreeFree
Rating4.3 (4 ratings)4.7 (2.3K ratings) — better
Positive reviews100.0% of reviews — better71.2% of reviews
Number of ratings42.3K — better
Update frequencyEvery 13 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.0 — better9.3
Further details — not scored
Size72 MB17 MB
Age rating4+4+
DeveloperRohde & Schwarz GmbH & Co. KGdatronicsoft Technology GmbH

Customer experience

Field Strength Estimator

All ratings4 ratings
Positive75.0%
Neutral0.0%
Negative25.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

spacedesk

All ratings2,195 ratings
Positive94.8%
Neutral1.2%
Negative4.0%
Written reviews899 reviews
Positive71.2%
Neutral7.2%
Negative21.6%

In-app purchases

None

Field Strength Estimator

No in-app purchases

11 purchases

spacedesk

One-time11
  • Business License: 46-50 Conn.$9.00
  • Business License: 41-45 Conn.$18.00
  • Business License: 1 connection$19.00
Show 8 more
  • Business License: 36-40 Conn.$25.00
  • Business License: 31-35 Conn.$35.00
  • Business License: 26-30 Conn.$45.00
  • Business License: 21-25 Conn.$50.00
  • Business License: 16-20 Conn.$59.00
  • Business License: 11-15 Conn.$60.00
  • Business License: 6-10 Conn.$70.00
  • Business License: 2-5 Conn.$79.00

Questions

Is Field Strength Estimator free?
Field Strength Estimator is free to download, with no in-app purchases.
Is spacedesk free?
spacedesk is free to download, with in-app purchases available.
Which has better reviews, Field Strength Estimator or spacedesk?
spacedesk is rated higher. Field Strength Estimator averages 4.3 out of 5 from 4 ratings, while spacedesk averages 4.7 from 2.3K ratings.
Do Field Strength Estimator or spacedesk have ads?
Neither Field Strength Estimator nor spacedesk shows ads.
Which is updated more often, Field Strength Estimator or spacedesk?
Field Strength Estimator ships an update every 13 months, and spacedesk every 3 weeks. Most recently, Field Strength Estimator was updated on October 23, 2026 and spacedesk on October 26, 2026.

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