Comparison

Sidescreen vs ValoFSL

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

Head to head
About

Sidescreen

Features
Read full description

Sidescreen puts your iPhone or iPad screen on any web browser, instantly. No cables, no viewer app, no accounts. Share a link, and anyone can watch your screen live from their phone, tablet, or computer. Perfect for demos, presentations, teaching, remote help, or just showing a friend what's on your screen. HOW IT WORKS 1. Open your Sidescreen page in any browser and it shows a 6-digit code. 2. Enter the code in the app and tap Connect. 3. Tap Broadcast to go live. Everyone with your link sees your screen in real time. FEATURES • Mirror to any browser. Viewers need nothing installed, just a link. • System-wide broadcast. Share every app, powered by Apple ReplayKit. • Shareable links. Send a link anyone can open, with an optional password. • Live and low-latency. Your screen appears in about a second. • Quality controls. Tune image quality and frame rate for your connection. • Quick setup. Enter a room password to configure everything automatically. • Full control. Stop broadcasting or unpair from a room anytime. • Private by design. A red recording indicator shows whenever you're live. • Universal. One app for iPhone and iPad. GREAT FOR • Demoing an app or product to coworkers and clients • Presenting to a group without a projector or dongle • Teaching and tutorials, so you can show instead of tell • Remote support, letting someone see exactly what you see • Sharing your screen with friends and family Start sharing your screen in seconds. Download Sidescreen and send your first link today.

About

ValoFSL

Features
Read full description

ValoFSL is a high-precision Free Space Loss (FSL) solver built for RF engineers, wireless network technicians, satellite communications specialists, and telecom professionals. Perform quick, accurate propagation calculations with a sleek, distraction-free interface designed specifically for field and office use. Unlike basic single-purpose calculators, ValoFSL features a flexible multi-variable solver. Simply enter any two known values to automatically solve for the third—whether you need to determine signal attenuation, estimate maximum link distance, or identify the required frequency. KEY FEATURES • 3-Way Multi-Variable Solver: Seamlessly calculate Free Space Loss (dB), Distance, or Frequency given any two known parameters. • 100% Free & Private: Completely free with no ads, no in-app purchases, and zero user data collection. Your privacy and workflow are fully protected. • Wide Spectrum Coverage: Compute values accurately across frequencies ranging from kHz to millimeter-wave bands. • Flexible Unit Selection: Effortlessly toggle between metric and imperial distance units (meters, kilometers, feet, miles) and standard frequency units (kHz, MHz, GHz). • Precise Link Budget Support: Get immediate, accurate signal attenuation or path estimation to streamline your link budget modeling and coverage analysis. • Field-Ready Dark Theme: Built with high-contrast dark aesthetics for maximum legibility in low-light environments and direct sunlight. • 100% Offline Functionality: Performs all mathematical calculations locally on your device—no internet connection required for remote field deployments. • Lightweight & Clean: Zero telemetry bloat and no unnecessary device permissions—just pure engineering utility. IDEAL APPLICATIONS • RF & Wireless Engineering: Microwave backhaul design, cellular network planning, and point-to-point link evaluation. • Coverage & Distance Estimation: Quickly determine maximum allowable path distance for a target link margin. • Satellite Communications: Earth-to-space and space-to-earth path attenuation estimates. • WLAN & Private Networks: Outdoor Wi-Fi deployment and IoT coverage modeling. • Amateur Radio (Ham): Line-of-sight propagation analysis and antenna path verification. • Education & Research: Reliable reference tool for telecommunications and RF engineering students. ValoFSL combines mathematical rigor with flexible problem-solving, giving you a powerful, privacy-first RF tool wherever your work takes you.

Screenshots

Sidescreen3 screens
ValoFSL4 screens

Verdict

The call

Sidescreen and ValoFSL are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Neither carries in-app purchases, so what you see is what you pay.

ScorecardNo meaningful differences
Sidescreen versus ValoFSL: the parameters behind the verdict, then further details
ParameterSidescreenValoFSL
PriceFreeFree
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.015.1 — better
Further details — not scored
Size1 MB31 MB
Age rating4+4+
DeveloperRunway AppsValo Analytica LLC

In-app purchases

None

Sidescreen

No in-app purchases

None

ValoFSL

No in-app purchases

Questions

Is Sidescreen free?
Sidescreen is free to download, with no in-app purchases.
Is ValoFSL free?
ValoFSL is free to download, with no in-app purchases.
Do Sidescreen or ValoFSL have ads?
Neither Sidescreen nor ValoFSL shows ads.

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