# SonarPhone by Vexilar > Smartphone sonar system for fishing and boating with wireless transmitter. (iPhone/iPad app by Vexilar.) - Source: https://appshunter.io/ios/app/sonarphone-by-vexilar/id719116540 (this page in markdown: same URL + `.md`) - Developer: [Vexilar](https://appshunter.io/developer/719116543) - Category: Sports, Utilities - Price: Free - Rating: 2.90/5 from 35 App Store ratings · 39 written reviews indexed - Age rating: 4+ - Requires: iOS 10.0 · 27 MB - Languages: American English, Chinese (Simplified, China) - Released: 2013-10-23 - Data updated: 2026-06-09 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/sonarphone-by-vexilar/id719116540/reviews.md ## What is SonarPhone by Vexilar? As the name implies, SonarPhone turns your smartphone or tablet into a fully functional touch screen sonar system that will rival the performance of sonar systems costing hundreds more. You don’t need cell phone coverage to use it, the SonarPhone Sonar Transmitter will work anywhere in the world. The SonarPhone transmitter creates its own WiFi hotspot and you can share its signal with as many people as you wish or password protect it just for yourself. To use the SonarPhone App in anything other than “Demo Mode” you will need to connect to an existing SonarPhone Sonar WiFi Transmitter or purchase one of the three options yourself. The T-POD (SP100) is a ultra portable WiFi transmitter systems that has a self contained battery and can be pulled behind your boat, cast or thrown from shore. The T-BOX (SP200) is a more permanently mounted system that is mounted in a boat with access to a 12 volt power supply (not included). Or the T-BOX (SP300) which is the T-BOX mounted on its own 12 volt battery pack to make it more portable. SonarPhone delivers a multi-color color display plus it offers a robust menu of features you will be able to “Test Drive” by downloading this SonarPhone App and play the system in the “DEMO” setting. The SonarPhone App includes 17 language options: English, Spanish, German, Polish, Korean, Japanese, Chinese, Portuguese, Dutch, Finnish, Russian, Italian, Czech, Danish, French, Swedish and Greek. For a limited time, all SonarPhone Sonar/Transmitter systems come with a bonus gift! A SmartPhone neoprene armband so you will have easy and safe access to your phone display at all times. Depth Sounder Features > Automatic Ranging > Transmit Range: 90 yards > Water Temperature, Depth Indicator > Audible Alarms for Fish/ Shallow/Low Battery > Fish Icon > Zoom Bottom Track > Noise Rejection > Surface Clarity > Battery Indicator > Screen controls: Touch screen, split screen display with touch screen zoom control. Specifications - SP100 Wi-Fi Transducer Pod > Usage: Impact resistant chassis. Cast it or troll it. > Transducer: Water activated transmitter > Max depth range: 120 feet > Sonar frequency: 125 kHz > Single Beam: 30º > Power source: 3.7V rechargeable battery. > Runs for 4 continuous hours per charge. > USB port charging system. > Power output: 400 watts peak-to-peak > Transmit speed: 100 Mbps > Screen controls: Touch screen controls > One year warranty Specifications - SP200 & SP300 Wi-Fi Boat Sonar > Permanent boat installation: (#SP200 only) > Portable boat installation w/suction cup transducer bracket: ( #SP300 only) > Transducer: High-speed skimmer-style transducer with keel offset and 6 meters of cable. > Max depth range: 240 Feet > Sonar frequency: 200/83 kHz > Dual Beam: 20º/40º > Power source: 12V DC power > Power output: 800 Watts Peak-to-Peak > Transmit speed: 100 Mbps > One year warranty > Included 12V, 4.5 amp-hour battery and charger. (#SP300 only) > Carry case with 12 volt battery and charger: (#SP300 only) ## Key features - Touch screen sonar system - Wireless WiFi hotspot transmitter - Multi-color color display - Automatic ranging - Water temperature and depth indicator - Audible alarms - Fish icon ## Recent user reviews (10 of 39) All indexed reviews: https://appshunter.io/ios/app/sonarphone-by-vexilar/id719116540/reviews.md ### 1/5 — Horrible, don’t waste your money *2026-02-06, version 3.30* As soon as you try to click any buttons on the screen it kicks you from the app. Do not buy ### 1/5 — Help *2026-01-03, version 3.30* Only opens for a second then crashes. I got this iPad for this app only .. dang hope they patch this soon ..".... ### 1/5 — Doesn’t work on iPhone *2025-04-19, version 3.29* App crashes immediately on trying to connect so it’s useless . This product shouldn’t be sold until it can actually be used. Only way to use this as a depth sounder is to throw the sounder in the water and measure the cable after the sounder hits the bottom. ### 3/5 — Bud fixes required *2025-04-13, version 3.29* Works fine connecting to my old iphoge7 iOS 15.8.3 but can’t connect with my iPhone 13 running iOS 18.3.2. Only way for it to work at the moment is as slave through the old iPhone 7. I like this fish finder and will keep using if the bugs are fixed. ### 1/5 — Doesn’t connect to iPhone *2025-02-24, version 3.29* It used to connect but now it won’t. Tried everything from SE to 14. Of course it happens on the biggest fishing trip of the year ### 1/5 — Crashes *2025-02-16, version 3.29* This app does not work on my iPhone, it crashes when I try and establish matter connection—rendering the hardware purchase useless. ### 1/5 — App crashes *2025-01-11, version 3.29* I do not think I would be a vexilar product again that is going to be associated with my smart phone. It is obvious that they do not try to support their products or customers. ### 1/5 — No updates *2024-12-22* Not updated for 3 years does not work on iOS 18 ### 1/5 — Waste of time *2024-05-02, version 3.29* I could not get the first unit to work with either my iPhone or iPad after a number of calls to tech support. I got a replacement and still could not get the unit to work with 4 different devices and more calls to the manuf. AND I had to pay for the return shipping. Waste of time and money ### 1/5 — Text on settings *2021-02-11, version 3.28* The text on the settings is white on a white background now. Can no longer read what setting is for what. Any updates on why???? ## Frequently asked questions about SonarPhone by Vexilar ### What does the SonarPhone app do? The SonarPhone app turns your smartphone or tablet into a fully functional touch screen sonar system. It connects wirelessly to a SonarPhone Sonar Transmitter to display underwater information, rivaling the performance of more expensive sonar units. ### How do I use the SonarPhone app? You can use the app in "Demo Mode" to explore its features. To use it with live data, you need to connect to a SonarPhone Sonar WiFi Transmitter, such as the T-POD or T-BOX models, which can be purchased separately. ### Does the SonarPhone app require cell phone coverage? No, the SonarPhone app does not require cell phone coverage to operate. The SonarPhone Sonar Transmitter creates its own WiFi hotspot, allowing the app to function anywhere in the world. ### What are the key features of the SonarPhone app? Key features include automatic ranging, water temperature and depth indicators, audible alarms for fish and shallow water, a fish icon, zoom bottom track, noise rejection, surface clarity, and battery indicator. It also offers touch screen controls and a split screen display with zoom. ### What are the compatibility and pricing options? The app is compatible with smartphones and tablets. While the app itself is free to download and use in demo mode, a SonarPhone Sonar Transmitter (SP100, SP200, or SP300) is required for live sonar functionality and must be purchased separately. ## Version history (last 5 releases) ### 3.30 — 2025-04-24 bug fix ### 3.29 — 2021-02-23 Bug fix for display problems if using dark mode. ### 3.28 — 2021-01-01 Bug Fixes and Improvements ### 3.27 — 2019-04-19 Improved sampling rate Added support for iPhone XS Max ### 3.25.5 — 2019-04-16 Bug Fix ## Apps similar to SonarPhone by Vexilar | App | Rating | Price | Category | | --- | --- | --- | --- | | [TrackMan Camera](https://appshunter.io/ios/app/trackman-camera/id835752852) | 3.2 (15) | Free | Sports | | [Shearwater Cloud](https://appshunter.io/ios/app/shearwater-cloud/id1185701505) | 2.6 (95) | Free | Sports | | [STRIKER™ Cast](https://appshunter.io/ios/app/striker-cast/id1445657766) | 4.7 (148) | Free | Sports | | [CMonster](https://appshunter.io/ios/app/cmonster/id938407650) | 2.1 (95) | Free | Sports | | [Fishbox - Smart Fishing App](https://appshunter.io/ios/app/fishbox-smart-fishing-app/id542238652) | 4.6 (424) | Free | Sports | | [Super Fencing System](https://appshunter.io/ios/app/super-fencing-system/id6449682618) | 5.0 (5) | Free | Sports | ## More apps by Vexilar - [FishPhone by Vexilar](https://appshunter.io/ios/app/fishphone-by-vexilar/id765267904) - [Vexilar](https://appshunter.io/ios/app/vexilar/id6752769665) All apps by Vexilar: https://appshunter.io/developer/719116543 ## Related topics [vexilar](https://appshunter.io/ios/topics/vexilar) · [sonarphone by vexilar](https://appshunter.io/ios/topics/sonarphone-by-vexilar) · [vexol](https://appshunter.io/ios/topics/vexol) · [Sonar Manufacturing Ltd](https://appshunter.io/ios/topics/sonar-manufacturing-ltd) · [fishphone by vexilar](https://appshunter.io/ios/topics/fishphone-by-vexilar) · [depth finder](https://appshunter.io/ios/topics/depth-finder) · [boat sonar seeker](https://appshunter.io/ios/topics/boat-sonar-seeker) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-09.*