242+ iOS apps curated and reviewed
Out of 242+ signal processing apps on iOS, 19 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 4.6★ (5) | No | No | Jul 2026 |
| 2 |  | Free | 5.0★ (2) | No | No | Aug 2026 |
| 3 |  | $19.99 | 5.0★ (7) | No | No | Aug 2026 |
| 4 |  | Free | 4.7★ (1.1M) | No | Yes | Aug 2026 |
| 5 |  | Free | 5.0★ (10) | No | No | Aug 2026 |
| 6 |  | Free | 4.8★ (29K) | No | No | Aug 2026 |
| 7 |  | Free | 1.3★ (11) | No | No | Aug 2026 |
| 8 |  | Free | — | Yes | No | Jul 2026 |
Explore the processing of random signals like speech, music, and climate data. This interactive textbook offers dynamic information, films, animations, and 59 real-time laboratory experiments using your device's camera and microphone. It's designed for those with prior signal processing and probability theory knowledge.
This educational course introduces signal processing tools used in geophysics, drawing from established texts and software. It covers key concepts like Fourier transformations, sampling, filtering, and seismic applications through text, video, and interactive applets.
This vintage-style audio processing plugin generates unique sounds by combining two signals with complex math. It functions as a tone generator, distortion unit, or multimode filter, encouraging sonic exploration.
This messaging app prioritizes your privacy with strong end-to-end encryption for all communications. It offers free text, voice, and video messaging, including group chats and disappearing stories, all without collecting your data.
Learn and practice Morse code with this engaging app. It offers interactive tapping, real-time scoring, and haptic feedback to make learning fun and effective. Ideal for beginners and those looking to refresh their skills.
This app helps eligible auto insurance customers drive safer and potentially earn discounts and rewards. It tracks driving behavior, offers improvement tips, and includes features like crash detection and roadside assistance. Start driving to automatically begin tracking and unlock savings.
This utility helps users install cell phone signal boosters by testing signal strength, identifying base station direction, and connecting to boosters for adjustment and monitoring. It offers guidance and support to ensure optimal signal performance for homes and offices.
This application offers real-time radio frequency signal detection and analysis. It monitors signal strength, analyzes frequency bands, and identifies interference sources. The tool provides historical data and network optimization insights for a better wireless experience.
Locate nearby cell towers, analyze signal strength, and view coverage maps to find reliable connections. Test your internet speed and identify dead zones for a better mobile experience.
Locate nearby TV broadcast towers and optimize antenna direction for the best over-the-air signal. This tool helps cord-cutters find local channels, discover towers, and align antennas using maps, compass, and augmented reality.
This app provides powerful measurement and analysis tools for acoustics, audio, and electronics. It offers a free oscilloscope and subscription-based tool sets for basic, advanced, and professional needs, compatible across iPhone, iPad, and Mac.
Analyze your wireless network and nearby signals. View connected devices, scan Bluetooth, monitor magnetic fields, test internet speed, and look up email information. Designed for personal informational use.
Identify areas with the strongest Wi-Fi signals in your home or office. This app provides detailed Wi-Fi information and helps you optimize your connection by showing signal strength in dBm.
Analyze your surroundings with tools that focus on connected devices, local signals, and network information. Understand Wi-Fi and Bluetooth activity, check magnetic fields, and measure network speed in a clear interface.
This tool simplifies peptide reconstitution calculations with a comprehensive database of research-backed compounds. It offers precise math for various syringe types, evidence-based reference ranges, and safety warnings. An optional subscription unlocks advanced features like saved protocols and scheduling.
Connect with friends and family globally through private messaging and high-quality calls. Share moments, documents, and stay in touch across devices, even on slow connections. Your conversations are secured with end-to-end encryption.
This app allows Indonesian citizens to digitally renew their vehicle registration, pay motor vehicle tax, and traffic accident insurance. It provides digital documents like E-Pengesahan and E-TBPKP, eliminating the need to visit a physical Samsat office.
Visualize your home Wi-Fi signal strength with a live AR heatmap. Get smart insights and actionable advice to optimize your network performance and identify dead zones. Discover who is connected to your network and understand your internet speed and latency.