--- title: "King of FM: DX Synth/E Piano - Reviews, Revenue and Downloads in United States | Apple App Store" description: "Classic & New presets, inspired by retro 80s FM Synthesizers used on countless hits! It's like getting a DX7 & SY77 in the palm of your hand. This is a FREE Premium app: No ads. No subscriptions. Fu" --- # King of FM: DX Synth/E Piano — United States > #1 DX7 Sounds & Electric Piano ![King of FM App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/46/ab/44/46ab44c1-f0b6-47b2-4697-3ea7d84317f6/AppIcon-0-0-1x_U007emarketing-0-8-0-85-220.png/434x0w.png) **Developer:** [AudioKit Pro](https://apptail.io/developer/audiokit-pro-Bdd) (United States) **Category:** Music **Rating:** 4.9/5 (1,567 ratings) **Price:** Free **Bundle ID:** com.audiokitpro.kingoffm **Store:** Apple App Store **Country:** United States **Version:** 1.8.5 (released 2026-06-03) **Original Release:** 2023-05-02 **Languages:** English **App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id1672644102) **AppTail Page:** [https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/united-states](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/united-states) ## King of FM Description Classic & New presets, inspired by retro 80s FM Synthesizers used on countless hits! It's like getting a DX7 & SY77 in the palm of your hand. This is a FREE Premium app: No ads. No subscriptions. Full app, Everything is included! INCLUDES 300+ UNIQUE AND LAYERED SYNTH INSTRUMENT SOUNDS! PLUS, Includes sounds from FM Player (This app is the NEW Version of FM Player 2) This app contains Analog Matthew's exclusive “Holy Grail” DX7 samples used by Herbie Hancock in the studio. Plus, this app is used by producers for Sting, Jay-Z, Alicia Keys, John Legend, and more! "Dope! It's in my bag for every session" - Henny tha Bizness, Grammy-winning Producer “Sounds authentically like the original hardware” – Electronic Musician magazine "Proves the iPad can be a great sounding, viable synth.” – MATRIXSYNTH.com "KING OF FM is possibly the BEST FREE iOS MUSIC APP, EVER!" - The GarageBand Guide PROFESSIONAL! This app can be used as a live instrument controlled with a MIDI Keyboard. EXPRESSIVE! The main "E Piano" and "Full Tines" sounds have 20+ layers for maximum expressiveness. Playing live with keyboard supports MIDI Mod Wheel, Pitch Wheel, Program Change, Velocity sensitive sounds, and Sustain Pedal support – All included! “This app filled my eyes with tears when I first played through the sounds. It brought back memories of my youth, I was transported to a time when anything and everything was possible.” - A grateful musician AWESOME FEATURES: • Standalone iPhone/iPad app & iOS AUv3 Plugin • Over 300+ Presets and over 10,000+ individual samples to inspire you • FX: Phaser, Chorus, Reverb, Ping-pong delay, Crush, Stereo Fatten, and more! • Compact! Over 2+ gigabytes of sounds compressed to under 400 mb • Audio recording: Record your sounds then export wav files! No other apps needed • Use as an iOS Plug-in in hosts like GarageBand, AUM, Cubasis, Beatmaker 3, and more • Run on your silicon Mac (Standalone version) • Includes full lifetime license for both iPhone, iPad, and Silicon Mac *** We are all volunteers, we do not get paid anything to make this app. We would be humbled if you checked it out. 100% of any proceeds from other apps go to support the AudioKit open-source project *** Make some music, and share it. Tag us. We want to hear YOU! LEARN MORE: audiokitpro.com/kingfm KING OF FM is the reboot of FM Player. For the first time, these award-winning sounds are available for iPhone & Silicon Mac. It’s no longer the sound of the past. These sounds are being used on hit records now. This app is the sound of TODAY! ** This app has no official affiliation with Yamaha or the DX7, DX7II, or SY77. KING OF FM is a free project to bring the joy of music-making to the world. We appreciate Yamaha's beautiful instruments. ** This app has no official endorsement with any artist or producer named in the description (including Herbie Hancock, Jay-Z, Drake, etc). We are humbled they have used our apps. They have received no payment or otherwise compensation for using our apps. :) ## King of FM Screenshots - [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/64/b9/bf/64b9bf5b-ca0f-e210-c435-d469814f44fc/079a9636-3212-4d1d-b995-c173bb58577f_screen2.png/2778x1284.png) - [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/ff/f0/2c/fff02ce8-7603-fa03-63d3-f03dbe1c9ea7/b9553f11-2cf6-481f-8890-9cfa22e35a7b_Simulator_Screenshot_-_iPhone_13_Pro_Max_-_2023-04-21_at_16.23.13.png/2778x1284.png) - [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/ff/39/d5/ff39d5ce-91d1-e9b6-f5d6-4b7906f31ab9/60f5cedd-c354-4e12-a175-90020245f9ad_Simulator_Screenshot_-_iPhone_13_Pro_Max_-_2023-04-21_at_16.22.21.png/2778x1284.png) - [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/a2/62/3f/a2623ffc-7b11-79ad-6907-82c24039623c/e0e9a97e-6121-4aee-9ec9-2ad38713a742_Simulator_Screenshot_-_iPhone_13_Pro_Max_-_2023-04-21_at_16.23.03.png/2778x1284.png) - [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/cd/3f/14/cd3f1482-dfc5-e16e-cf7e-f54deaebb80f/1e230ea6-2528-467b-aa86-a62ad3c3ea1b_Simulator_Screenshot_-_iPhone_13_Pro_Max_-_2023-04-21_at_16.22.40.png/2778x1284.png) ## King of FM Rating Breakdown in United States - 5 stars: 1,458 (93%) - 4 stars: 69 (4%) - 3 stars: 27 (2%) - 2 stars: 7 (0%) - 1 stars: 6 (0%) ## King of FM Reviews in United States ### ****- "Really useful presets. The mod wheel varies the texture in the background sounds" Amazing and totally free. You developers have given us a gift! -- david - hawaii, 2024-12-18 ### ***** "Gotta love the 80’s" This the coolest app I’ve come across in a long time. I’ve spent an afternoon just perusing the sounds. I had a DX7 back in the day. Now it’s in my backpack. Thanks dev team for putting time into this. -- TC in denver, 2024-12-15 ### ****- "Appreciations" Surely , easy accessible to so many sounds types . Good luck Thank you -- F. Koohi, 2024-12-11 ### ***** "Should be called “KING OF SYNTHS”" One of the best sounding synths for iOS !! Hands down this synth does not disappoint!! Highly recommend this!! -- JGATZBEATS, 2024-11-29 ### ***-- "666" can't change screen size format & I can't simply find a list for all favorites -- Jessesaint, 2024-11-10 ### ***-- "Not Working in GarageBand iOS" I absolutely LOVE this app, I love all the presets and sounds on it and I wouldn’t change a thing on that. But a couple of days ago it just stopped working on GarageBand iOS and it ruined a lot of my tracks. I tried re installing king of fm and redownloading it and refreshing my phone but it still doesn’t load or make any sound on GarageBand. I tried my other external audio unit extensions and those work fine which is weird. I’m just trying to find a way to fix it to where I can use king of fm on GarageBand again -- Jeremiah.S, 2024-11-02 ### ***** "AWESOME" King of FM is great and sounds great. I love Audiokit’s gear. The synths sound full and so professionally useable. I am so happy with my current purchases and look forward to all that Audiokit offers. Great synths!!! - Grey F♾️l -- Shadowhavok13, 2024-09-27 ### ***** "This synth is insane!!" Best price for the best synth. Can’t go wrong. Buy it! -- sweatshop beats, 2024-08-30 ### ***** "Good, but glitchy" I love finding new piano apps that have a lot of cool synth sounds, and I love this one. It can be very buggy at sometimes, and the dark mode piano thingy gives me a headache (I changed it) but overall this is a 10/10 app, sound wise. -- Carson Orfield, 2024-08-16 ### ***** "Load onto iPad for Garage band" Great layout and even better sounds. Had a DX seven back in the day and brought back memories. My issue is I can’t get GarageBand to recognize that I have downloaded the app either via my iPhone or iPad. What am I missing? -- Tjo716, 2024-08-07 ### ***** "Whoah" It’s been weeks and I’m still obsessed, this is just the dopest -- Doobie Doowah, 2024-08-04 ### ***** "Absolute Ingenious App!!" I can't thank you enough for fulfilling this dream of mine to make music from my soul. You all did such a wonderful job to reach deep into time and space in creating this for all music producers and enthusiasts. This is enhancing my dreams into becoming reality. No words but completely in awe of the surreal feelings when I create such meticulous sound layers in building tracks. This is almost like using the electrode Korg which I had a great experience using while learning the trades of production. This is similar to apps I've used but with more advanced modifications and tweaks. I love this app and I use it either on my iPad or my iPhone. This by far surpasses the endless possibilities of original production. ;);) you are beautiful souls who've made a difference in my life. Music is better with this invention. -- MHM111119, 2024-07-30 ### ***** "Absolutely AWESOME!!!" I bought an original DX-7 when they were first introduced- to now be able to carry one around on an iPad in my knapsack— Heavenly! Great sounds, great parameter control, and great flexibility. Thank you! -- Drenreb, 2024-06-19 ### ***** "Awesome FM!" Hard to believe that you can get access to a tool like this, for free, on your phone! Big thanks to the developers -- Komet444, 2024-06-15 ### ***** "This is a winner!" I’m incredibly excited about this software. Can’t praise it enough on how well it replicates the original DX sound. The velocity is incredibly smooth and responsive. Couldn’t be happier! -- Renogy User, 2024-05-23 ### ****- "bkblues review-" great stuff in here .bkblues -- Harry Wilburstien, 2024-05-22 ### ***** "Awesome synth" Love this synth. Intuitive and expansive and FREE! -- bdizzle85, 2024-05-20 ### ***** "Sweet." This is the best app I’ve used since caustic the sounds and presets are definitely top of the line if you can’t produce something awesome or dope from this app then just keep trying I give it two thumbs up amazing job they did thanks again to all of you guys and gals who made this available to everyone greatly appreciated -- richierich2937, 2024-04-23 ### ***** "SUPER GRATEFUL 🙏🏻 ❤️❤️" Thank you thank you thank you thank you from my soul Matthew you are awesome to give away such beautiful sounds for free. I at least bought another one of Your apps for five dollars. I wish I could give you more. I give you all my heart and love for such a wonderful app or should I say apps keep up the awesome work Matthew thank you again ❤️❤️❤️❤️❤️ -- eliteix1, 2024-02-16 ### ***** "Awesome Sounds" I Made the purchased out of Curiosity - All these sounds for the Low - Once I dabble into the presets I was like holdup - these sounds are the Bang for the Buck - I Salute the Sound Designers - One question though when I purchased the App - it said Lifetime License - Does that mean I can use the sounds in my production Royalty Free Lifetime - Please Clarify. -- BoSs BaNg H, 2024-01-28 [View all King of FM reviews and detailed analytics on AppTail](https://apptail.io/account/signup?utm_campaign=ai-crawl&utm_content=reviews) ## King of FM Store Rankings | Chart | Country | Category | Rank | |-------|---------|----------|------| | Top Free | Singapore | Music | #398 | | Top Free | Norway | Music | #420 | ## King of FM Discovered Keywords - synth - aum - piano synth - modular synth - plug in 3d - audiokit - free retro sounds - free retro sounds for iphone - fm 80 - plugin ## Apps Similar to King of FM - [DRC - Polyphonic Synthesizer](https://apptail.io/app/drc-polyphonic-synthesizer-yzg/united-states) - [KORG Gadget 2 Le](https://apptail.io/app/korg-gadget-2-le-ePi/united-states) - [Loopy Pro: Looper DAW Sampler](https://apptail.io/app/loopy-pro-looper-daw-sampler-kVt/united-states) - [Animoog Z Synthesizer](https://apptail.io/app/animoog-z-synthesizer-GtA/united-states) - [BLEASS Monolit](https://apptail.io/app/bleass-monolit-wCA/united-states) - [Minimoog Model D Synthesizer](https://apptail.io/app/minimoog-model-d-synthesizer-QUM/united-states) - [Magic Switch - Baby Audio](https://apptail.io/app/magic-switch-baby-audio-Fhrb/united-states) - [AUM - Audio Mixer](https://apptail.io/app/aum-audio-mixer-Bxsb/united-states) - [Numa Player](https://apptail.io/app/numa-player-nCsc/united-states) - [DrumComputer - Synthetic Beats](https://apptail.io/app/drumcomputer-synthetic-beats-wddl/united-states) ## King of FM Available In - [United States](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/united-states) - [United Kingdom](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/united-kingdom) - [Germany](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/germany) - [Canada](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/canada) - [Italy](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/italy) - [France](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/france) - [Australia](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/australia) - [Mexico](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/mexico) - [Japan](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/japan) - [Brazil](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/brazil) - [Netherlands](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/netherlands) - [Spain](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/spain) - [Russia](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/russia) - [Poland](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/poland) - [China](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/china) - [Sweden](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/sweden) - [Philippines](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/philippines) - [India](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/india) - [Belgium](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/belgium) - [Switzerland](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/switzerland) - [Argentina](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/argentina) - [Hungary](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/hungary) - [Ukraine](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/ukraine) - [Finland](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/finland) - [Ireland](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/ireland) - [Thailand](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/thailand) - [Chile](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/chile) - [Greece](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/greece) - [Norway](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/norway) - [Türkiye](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/turkey) - [Portugal](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/portugal) - [Czechia](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/czechia) - [Colombia](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/colombia) - [Denmark](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/denmark) - [Israel](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/israel) - [South Africa](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/south-africa) - [Indonesia](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/indonesia) - [New Zealand](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/new-zealand) - [Austria](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/austria) - [Peru](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/peru) - [South Korea](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/south-korea) - [Romania](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/romania) - [Hong Kong SAR China](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/hong-kong) - [Malaysia](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/malaysia) - [Taiwan](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/taiwan) - [Vietnam](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/vietnam) - [Singapore](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/singapore) - [Slovakia](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/slovakia) - [Croatia](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/croatia) - [Latvia](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/latvia) - [Kazakhstan](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/kazakhstan) - [Nepal](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/nepal) - [Slovenia](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/slovenia) - [Dominican Republic](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/dominican-republic) - [Pakistan](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/pakistan) - [Estonia](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/estonia) - [Lebanon](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/lebanon) - [Mauritius](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/mauritius) - [United Arab Emirates](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/united-arab-emirates) - [Cyprus](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/cyprus) - [Senegal](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/senegal) - [Algeria](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/algeria) - [Madagascar](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/madagascar) - [Luxembourg](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/luxembourg) - [Lithuania](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/lithuania) - [Belarus](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/belarus) - [Sri Lanka](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/sri-lanka) - [Saudi Arabia](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/saudi-arabia) - [Jamaica](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/jamaica) - [Bulgaria](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/bulgaria) - [Iceland](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/iceland) - [Malta](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/malta) - [Nigeria](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/nigeria) - [Bahrain](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/bahrain) - [Cayman Islands](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/cayman-islands) - [Kuwait](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/kuwait) - [North Macedonia](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/north-macedonia) - [Ecuador](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/ecuador) - [Uzbekistan](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/uzbekistan) - [Ghana](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/ghana) - [Grenada](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/grenada) - [Armenia](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/armenia) - [Belize](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/belize) - [Tunisia](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/tunisia) - [Azerbaijan](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/azerbaijan) - [Brunei](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/brunei) - [Egypt](https://apptail.io/app/king-of-fm-dx-synthe-piano-EXlm/egypt) --- ## About AppTail [AppTail](https://apptail.io) is a mobile app intelligence platform providing app analytics, ASO (App Store Optimization) tools, keyword tracking, competitor analysis, revenue estimates, and review monitoring for iOS App Store apps. Track your app's performance, discover ranking keywords, monitor competitors, and analyze market trends. - [Search Apps](https://apptail.io) - [Top Charts](https://apptail.io/top-iphone-apps) - [Sign Up for Full Access](https://apptail.io/account/signup?utm_campaign=ai-crawl&utm_content=footer) *Data provided by [AppTail](https://apptail.io) - Mobile App Intelligence Platform*