Comparison

RF Tools ++ vs Spider

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

Head to head

Finder Device Tracker

$4.99

🔧 Utilities

No ratingsView app →

About

RF Tools ++

Features

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RF Tools provides essential utilities for RF and link budget calculations including: Antenna Factor, Field Intensity, Phase, Time Delay, Wavelength, Cable Calculator, Cable Loss, Cable K1 K2 estimator, dBm/Watts conversions, dBµA/Amps conversions, dBµV/Volts conversions, Gain conversions, Power conversions, Free Space Loss, VHF/UHF Line of Sight, Fade Margin, Link Margin, Radar Max/Min Range, VSWR/Power/Return Loss Conversions, Radar Equation Solver and several reference items. The cable loss tool includes generic cables and many cables from Andrew, Beiden, Harbour Industries, Huber+Suhner, IW-Microwave, MegaPhase, Micro-Coax, PIC Wire & Cable, Times Microwave and Webro. Calculations are added regularly

About

Spider

Features

Read full description

Never lose track of your devices again with Spider – Bluetooth Finder! This powerful, easy-to-use app helps you locate your phone, AirPods, or any other Bluetooth-enabled device in seconds. Whether it’s lost in a room, misplaced, or tucked away in an unfamiliar spot, Spider guides you to your device using a precise Bluetooth signal strength meter. No subscription - One time purchase - lifetime use. Key Features: Device Detection: Quickly find any Bluetooth-enabled device, including phones, earbuds, smartwatches, and more. Real-Time Signal Tracking: Follow the signal strength to get closer to your lost device. Distance Meter: Know how close or far you are from your device, simplifying your search. Device List: Easily see all nearby Bluetooth devices and connect with a tap. The ''Play sound'' - function works with supported devices. Privacy Policy - https://sites.google.com/view/spider-bluetooth-finder/privacy-policy Terms of Conditions - https://sites.google.com/view/spider-bluetooth-finder/terms-of-service

Screenshots

RF Tools ++4 screens

Spider4 screens

Verdict

The call

The clearest difference is update cadence: Spider at daily against RF Tools ++'s every 2 weeks. Spider also leads on iOS requirement (13.4 vs 17.0). RF Tools ++'s advantage is price ($1.99 vs $4.99). On ads, in-app purchases and device support 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

RF Tools ++ costs $1.99 and Spider $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

RF Tools ++ ships an update every 2 weeks, Spider daily. The most recent releases landed on October 19, 2026 and October 18, 2026 respectively.

Scorecard3 real differences · 3 level

RF Tools ++ versus Spider: the parameters behind the verdict, then further details
Parameter	RF Tools ++	Spider
Price	$1.99 — better	$4.99
Update frequency	Every 2 weeks	Daily — better
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPad	iPhone, iPad, iPod — better
Requires iOS	17.0	13.4 — better
Further details — not scored
Size	42 MB	31 MB
Age rating	4+	4+
Developer	Jeff Curtis	Blind Squirrel LLC

In-app purchases

None

RF Tools ++

No in-app purchases

None

Spider

No in-app purchases

Questions

Is RF Tools ++ free?

RF Tools ++ costs $1.99, with no in-app purchases.

Is Spider free?

Spider costs $4.99, with no in-app purchases.

Do RF Tools ++ or Spider have ads?

Neither RF Tools ++ nor Spider shows ads.

Which is updated more often, RF Tools ++ or Spider?

RF Tools ++ ships an update every 2 weeks, and Spider daily. Most recently, RF Tools ++ was updated on October 19, 2026 and Spider on October 18, 2026.