Best SPLnWATCH (SPLnFFT extension) alternatives: apps like SPLnWATCH (SPLnFFT extension)

40+ similar apps compared and reviewed

3.5 avg rating
5 free apps
Updated November 2026

SPLnWATCH (SPLnFFT extension) is great, but it's not the only option. Explore 40+ similar apps for iPhone and iPad, each reviewed and rated by real users. Find free alternatives, premium upgrades, and hidden gems.

Top Alternatives to SPLnWATCH (SPLnFFT extension)

LocalSites#1

LocalSites by Lukas Zeller

shows local device's websites
Editor's Choice
🔧 Utilities
1.0(1 ratings)
Free
LocalSites screenshot 1

Discover and access websites hosted on your local network. This utility helps you quickly find configuration pages for devices like printers and IoT gadgets, opening them directly in your browser.

WiFi Check: Wi-Fi Speed#3

WiFi Check: Wi-Fi Speed by EVGENY BOGOMOLOV

Router test between devices
Worth Considering
🔧 Utilities
2.6(7 ratings)
FreeIn-App Purchases
WiFi Check: Wi-Fi Speed screenshot 1
WiFi Check: Wi-Fi Speed screenshot 2
WiFi Check: Wi-Fi Speed screenshot 3
WiFi Check: Wi-Fi Speed screenshot 4
WiFi Check: Wi-Fi Speed screenshot 5
WiFi Check: Wi-Fi Speed screenshot 6

This app measures the actual speed of your Wi-Fi network between two devices. It helps you find optimal router placement, compare Wi-Fi bands, and ensure sufficient speed for streaming.

More apps like SPLnWATCH (SPLnFFT extension)

4
Emerald Setup
Emerald Setup
Emerald Setup
by Emerald Innovations, Inc.
Free

This app offers guided setup and monitoring for a touch-free health measurement system. It uses environmental wireless signals to track vital signs, sleep, and mobility without requiring wearables or user interaction.

Touch-free health measurementContinuous vital sign monitoringSleep and mobility tracking
🔧 Utilities
(5)
free
5
Fostex TM Sound Support
Fostex TM Sound Support
Fostex TM Sound Support
by Foster Electric Co., Ltd.
Free

Enhance your audio experience with customizable sound settings. Update your compatible Bluetooth earphones, adjust EQ, and manage touch sensor functions. Enjoy your music with personalized audio profiles.

Firmware updatesLandscape sound mixing5-band equalizer with presets
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free
6
NoiseLab: Noise Meter,SLM,dB
NoiseLab: Noise Meter,SLM,dB
NoiseLab: Noise Meter,SLM,dB
Noise Meter/Sound Meter/dB
$99.99

This professional tool transforms your device into an acoustical analysis meter, precisely measuring sound pressure levels and frequency characteristics. It offers advanced features for acoustic engineers, including customizable filters, calibration options, and data export capabilities.

Measures sound pressure level and frequencySupports built-in and external microphonesSimultaneous filter and time detector measurements
🔧 Utilities
(2)
paid
7
ImageAssistant Plus
ImageAssistant Plus
ImageAssistant Plus
Image Extractor and Downloader
$2.99

Extract and download images from web pages directly on your iOS device. This tool offers PC browser extension-like functionality for image management on the go.

Extract images from web pagesDownload imagesPC browser extension functionality on iOS
🔧 Utilities
(5)
paid
8
dB Meter & Spectrum Analyzer
dB Meter & Spectrum Analyzer
dB Meter & Spectrum Analyzer
Noise & sound level decibel
$29.99

Measure ambient noise levels with professional-quality accuracy. This app offers a spectrum analyzer, hearing test, and the ability to save and share measurements with location data. It's a powerful, cost-effective tool for personal sound monitoring.

Professional-quality sound level measurementIntegrated spectrum analyzerNoise dosimeter (NIOSH/OSHA)
🔧 Utilities
(866)
free with in-app purchases
9
Tiltometer
Tiltometer
Tiltometer
Off Road Clinometer
$1.99

This app transforms your device into a real-time inclinometer for off-road adventures. Monitor your vehicle's pitch and roll with animated gauges, customizable profiles, and adjustable tilt warnings. Includes GPS elevation and compass heading.

Real-time pitch and roll gaugesCustomizable vehicle silhouettesAdjustable tilt warning thresholds
🔧 Utilities
(13)
paid
10
Audio Frequency Analyzer
Audio Frequency Analyzer
Audio Frequency Analyzer
by TOON,LLC
$9.99

This real-time audio analyzer measures and evaluates sound environments with 1/3 octave band frequency response and FFT analysis. It supports calibration for high accuracy and is suitable for various audio testing and tuning applications.

Real-time frequency spectrum response measurement (1/3 octave, 30 bands)FFT AnalyzerObservation frequency range: 20 - 23000 Hz
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(3)
paid