--- title: "WorldScales - Reviews, Revenue and Downloads in United States | Apple App Store" description: "Not all scales are created equal. This app allows you to break out of the limitations of equal-tempered scales and gives you freedom to tune the built-in keyboard in whatever way you want. Loaded wit" --- # WorldScales — United States ![WorldScales App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/5f/b0/e4/5fb0e4b6-abc4-d843-081b-3a3605ab9d3c/AppIcon-0-0-1x_U007emarketing-0-11-0-85-220.png/434x0w.png) **Developer:** [Karim El-Far](https://apptail.io/developer/karim-el-far-HFI) **Category:** Music **Rating:** 4.7/5 (20 ratings) **Price:** Free **Bundle ID:** net.kelfar.WorldScales **Store:** Apple App Store **Country:** United States **Version:** 1.1.2 (released 2025-08-27) **Original Release:** 2012-02-29 **Languages:** English **App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id505034913) **AppTail Page:** [https://apptail.io/app/worldscales-Apzl/united-states](https://apptail.io/app/worldscales-Apzl/united-states) ## WorldScales Description Not all scales are created equal. This app allows you to break out of the limitations of equal-tempered scales and gives you freedom to tune the built-in keyboard in whatever way you want. Loaded with many presets and samples you can explore ancient scales, byzantine music, oriental vibes or configure your own scales. Have you ever wondered why we tune our instruments the way we do? They are usually tuned to an "equal-tempered scale", which divides the octave into equally spaced tones and semitones. This has become the most prevalent way of tuning the instruments in the west since the 18th Century. Today, musicians use this tuning system, and the scales based on it, without ever considering other ways. For example, in the Middle Ages European musicians generally used Pythagorean tuning, and today many traditional instruments in the Middle East and Asia are tuned according to regional systems and standards. Included features: ● Ability to tune each key in the octave individually (+- 100 cents). ● 35> High quality sampled instruments: From grand piano, violin and organ to oriental oud and kanun, to voices of a choir singing Ison voices. Many samples are polyphonic and have multiple velocity layers. ● MIDI In. Connect your External MIDI keyboard and play microtonal music. Tuning the individual keys is normally only possible on $1000+ keyboard! ● Many presets introducing lesser known western, byzantine and oriental scales. ● Ability to save your own scales and tunings. ● Entering directly frequency ratios, frequencies or cents. ● Shows on the piano keys where the scale starts and what keys are included in the scale. ● Changing the root key of a scale: all tuned keys are shifted correctly. ● Audio effects: reverb and compressor. ● And more… ## WorldScales Screenshots - [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/e6/6e/80/e66e80ff-8734-a425-791f-7e79f39936e2/mzl.rgxarfht.png/1024x748.png) - [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/7c/bc/6d/7cbc6dd6-fbd4-6efe-abe8-81e6108629b9/mzl.cnbnszas.png/1024x748.png) - [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/40/55/db/4055dbd5-bb2d-c940-5f0e-4f3da15611e5/mzl.hvniwabg.png/1024x748.png) - [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/b4/c7/f4/b4c7f44a-b70b-11e2-bc43-cab8eeafb71f/mzl.pqdatzwc.png/1024x748.png) ## WorldScales Rating Breakdown in United States - 5 stars: 17 (85%) - 4 stars: 2 (10%) - 3 stars: 0 (0%) - 2 stars: 0 (0%) - 1 stars: 1 (5%) ## WorldScales Reviews in United States ### ***** "Excellent App - Best in it’s Class" This app is packed with features and is loaded with many helpful options and amazing settings. I am very pleased with this and it has come in handy for my purposes ever since I downloaded it. Many thanks to Kelfar Technologies for all of the hard work, diligence, and expertise that goes into creating such a useful tool. -- Ma83707, 2024-06-17 ### ***** "The best app of its kind" Kelfar Technologies has raised the bar to the highest level with this app. As a Master-Chanter (“Protopsaltis”) of Byzantine Music and instructor of the psaltic art, this tool has become invaluable to me in various aspects of my field. First and foremost, it is an excellent aid in teaching the various scales and modes of Eastern Orthodox hymnology. The app is able to faithfully replicate the intricate microtonal intervals of the Byzantine scales, allowing the student to hear how tetrachords are “built” within the octal diatonic, chromatic, and enharmonic scales. In this respect, as a teaching tool, it is second to none. Second, this app produces a true accompaniment of the ison drone that is characteristic of Byzantine chant. Developed and digitized with recordings of human voices, World Scales faithfully produces a more authentic audio result than other similar tools available. I stress that HUMAN VOICES were used as the basis of making the sound output, and not by some other artificial “electronic” means. When properly transmitted through a high-quality speaker, the audio output of this app is the closest sound to a group of human “drone-holders” (i.e. “isokrates”) that one will hear in an actual Byzantine Choir. And third, although I am very hesitant yet selectively cautious in using this app in an actual church setting (the tradition of Orthodox hymnology allows only ONE instrument to be used in worship, and that instrument is the human voice), I do support its use in audio recordings and concert settings to help actual assistants and choir members in faithfully rendering the ison notes, which are the “decoration” to the melodic executions of the hymns. I applaud Kelfar Technologies in the development of this tool, and in its constant efforts to modify, improve, and further develop this app to make it the best of its kind. Thank you, Karim! Much continued success! -- Apostolos C., 2024-05-13 ### ***** "The best in its class" This app is the bomb! Thank you for your recent update too, Karim! -- Rick Hanson 42, 2024-05-02 ### *---- "APP stops abruptly" I love this APP and use it everyday. However, it has started stopping abruptly and boots me out. I hope there is a bug issue or easy fix. Please advise. I would give it 5 stars if it can be fixed and will change if that occurs. Kind regards, -- Devilbox Johnny, 2024-02-10 ### ***** "World Scales: Beginner-friendly and expert-versatile!" Kudos to this excellent application for its friendliness to beginners and versatility for those of us familiar with Near Eastern tunings, for example. As a lover of Arab maqam and Persian dastgah traditions, as well as the Psaltic art of Byzantine music, I was impressed by the priority given to intuitive accessibilty and ease of use as well as the wealth of musical value that should appeal to the user newly exploring tunings and/or the variety of world musics. One neat included tuning for Arab Rast is the Byzantine 53 Diatonic set, which approximates a moderately bright Maqam Rast if one starts from the Byzantine Νε (as in the Fourth Mode Plagal), or Maqam Huseyni (as in the First Mode and First Mode Plagal) if one starts from Πα. By the way, having these solmization syllables displayed on the keyboard in Greek characters is a great learning resource. The Byzantine theorist Chrysanthos of Madytos in 1832 gave al-Farabi's tuning of what was later termed a Rast tetrachord as an example of good Byzantine intonation. The Byzantine Diatonic 53 tuning included with this app is a nice middle point between the al-Farabi tuning and the later Byzantine tuning based on 36 or 72 steps per octave adopted by the Patriarchal Commitee on Music in 1881, and I found it a very nice Rast. The five accidentals are left in unaltered 12-tone equal temperament, but for Arab maqam music I might recommend setting them to Pythagorean flats (or the 53-tone equal temperament equivalents, which I think should be within about a cent of the Pythagorean values), with offsets relative to A at Db -16; Eb -12; Gb -18; Ab -14; and Bb -10. This expedites modulating from Maqam Rast on C (or Byzantine Νε as shown on the keyboard), the standard untransposed location on the Arab gamut, to other maqamat (the Arabic plural of maqam) on C, with Nahawand, Hijazkar, Nakriz, and Hijazkar Kurdi as attractive possibilities. As an experienced tuning table user, I'll add that I was creating user-defined tunings within my first few minutes after downloading, and the design is praiseworthy in keeping the interface simple while offering precision to the nearest cent. But the real success was found in the hours of delighted playing that this led to. I especially enjoyed the 'oud and kanun samples. This application is itself a work of art, in its intuitive design and sophisticated precision and above all its use of these to convey priceless musical beauty and value. -- Margo1325, 2024-01-05 ### ***** "Learning Chants" While starting to learn chanting with a Greek Orthodox church, I found out about the WorldScales app. With it, I can set the correct pitches for the various scales, something that thousands of other musical apps cannot do. I was delighted to see that not only can the user set pitch adjustments on each key, but it has the soft chromatic scale and Byzantine Mode 2 available directly from a menu. That was exactly what was needed for the music I was practicing. I was a little bummed because running on a MacBook the user interface is not as convenient as it would be for a touch screen on an iPad. But then I was completely delighted to discover the WorldScales' MIDI feature in the settings, connect my keyboard via USB cable, and it just worked. That's an even better UI than a touch screen. -- MagellanTheRed, 2022-04-28 ### ***** "مع الاسف لايوجد تحديثات" برنامج جميل وينقصه التحديثات والتطوير -- mjedov, 2019-03-08 ### ****- "Please update the application" نرجو تحديث التطبيق ونرجو اظافة الات اكثر واقعية -- ahmad al ameer, 2017-01-18 ### ****- "Waiting" This app is very good and i haven't seen anyother app like it. However I'm having problems lately , playing some keys makes the key turn color but it doesn't sound any sound. -- Arastoomi, 2015-12-15 ### ****- "Engineer" The last update of this application does not work please check it. -- Alasadi Salman, 2015-09-28 ### **--- "Not good keys size...!" Please add a feature that allow us to make a full screen keyboard or keys resizing option, they are very small and i can't play them well -- Saadweiss, 2015-01-19 ### ***-- "Interesting, But Needs an Update!" Seems like a cool app, although it no longer works with Audiobus now until they update their audiobus implementation. -- Zadokite, 2014-11-04 ### ****- "Audiobus" Audiobus support PLEASE!!!!!!!!! -- Krzs, 2014-10-10 ### ***** "I love this so much thank you!" I can't even believe this app exists, it's just so amazing! It will clearly take me to a whole new level in music appreciation and understanding, and composition inspiration. Knowing ancient scales is not enough. The actual tuning used by that culture is crucial to hearing the sound, for example with the Byzantine tunings. And while certain other western and also Hindustani tunings that I want are not included in the presets, at least I can manually create and save them...just as good! And besides keyboard, I know I will have fun on my cello by training my ear to these tunings, as a fretless instrument can play in any tuning. So many new possibilities! Overall I am so happy I discovered this app. -- Kdapple..', 2014-08-05 ### ***** "Every Chanter needs this app!" Coming from a western background, the hardest part of learning Byzantine music are the 72 moria scale. I was blown away that this app had it and the Greek modes. Thank you thank you thank you! -- MDCT, 2014-07-02 ### ***** "Great unique app!" Thanks for adding Audiobus to the already special set of features World Scales has. You can get sounds and playing out of this that you can't get out of 99% of the other apps out there, because of its special temperaments and scales. I haven't been this fired up about a music app in a long time! Thanks again!!! -- Glishba, 2014-06-20 ### ****- "برنامج رائع" البرنامج رائع واحترافي بإمكانك أن تُخفض وترفع من التون للرقم اللي تبغاه .. ربع تون نصف تون ... إلخ حتى تعزف مقامات شرقية أصوات شرقية جميلة مثل العود والقانون والمزمار والناي.. الناي مو مرة يعيب البرنامج إنك ما تقدر تكبر الكيبورد مقاسه ثابت -- Salah479, 2014-03-20 ### *---- "Unstable n won't save" Good sounds but I m still waiting on customer support from MONTHS ago to fix these issues...too busy to fix your app or respond to customers? -- Tabbal, 2014-02-25 ### ***** "Awesome app LOVE it" For as long as I wanted to buy a keyboard, supports the oriental scal. There is no need now for a spend big money for buy a keyboard. -- A.mageed, 2014-02-13 ### ***** "There's Nothing Else Like This App!" If you have been searching all your life for a way to playback your microtonal music from Finale, for example, this app does it. I can't wait for the next update. -- Rotkob, 2013-06-22 [View all WorldScales reviews and detailed analytics on AppTail](https://apptail.io/account/signup?utm_campaign=ai-crawl&utm_content=reviews) ## WorldScales Store Rankings | Chart | Country | Category | Rank | |-------|---------|----------|------| | Top Paid | Romania | Music | #14 | | Top Paid | Lebanon | Music | #73 | | Top Paid | Greece | Music | #139 | | Top Paid | Romania | Overall | #161 | | Top Paid | United States | Music | #208 | ## Apps Similar to WorldScales - [New Path - 2D Music Sequencer](https://apptail.io/app/new-path-2d-music-sequencer-KHmb/united-states) - [Oriental Strings](https://apptail.io/app/oriental-strings-XvOe/united-states) - [Tuning Workshop](https://apptail.io/app/tuning-workshop-bJYe/united-states) - [Psaltikon Tonarion N](https://apptail.io/app/psaltikon-tonarion-n-Ryaf/united-states) - [Byzantine Ison](https://apptail.io/app/byzantine-ison-kOmf/united-states) - [Eikona](https://apptail.io/app/eikona-nOmf/united-states) - [Psaltikon Tonarion](https://apptail.io/app/psaltikon-tonarion-xvZf/united-states) - [Hip Hop Drummer](https://apptail.io/app/hip-hop-drummer-lcRm/united-states) - [Secta : amplitude sculptor](https://apptail.io/app/secta-amplitude-sculptor-ITIo/united-states) - [Byzantine Tuner](https://apptail.io/app/byzantine-tuner-flZo/united-states) ## WorldScales Available In - [United States](https://apptail.io/app/worldscales-Apzl/united-states) - [Greece](https://apptail.io/app/worldscales-Apzl/greece) - [Romania](https://apptail.io/app/worldscales-Apzl/romania) - [Lebanon](https://apptail.io/app/worldscales-Apzl/lebanon) - [Türkiye](https://apptail.io/app/worldscales-Apzl/turkey) - [Sweden](https://apptail.io/app/worldscales-Apzl/sweden) - [Germany](https://apptail.io/app/worldscales-Apzl/germany) - [United Arab Emirates](https://apptail.io/app/worldscales-Apzl/united-arab-emirates) - [Saudi Arabia](https://apptail.io/app/worldscales-Apzl/saudi-arabia) - [Israel](https://apptail.io/app/worldscales-Apzl/israel) - [Canada](https://apptail.io/app/worldscales-Apzl/canada) - [France](https://apptail.io/app/worldscales-Apzl/france) - [Ireland](https://apptail.io/app/worldscales-Apzl/ireland) - [Chile](https://apptail.io/app/worldscales-Apzl/chile) - [Kuwait](https://apptail.io/app/worldscales-Apzl/kuwait) - [Poland](https://apptail.io/app/worldscales-Apzl/poland) - [Belgium](https://apptail.io/app/worldscales-Apzl/belgium) - [Australia](https://apptail.io/app/worldscales-Apzl/australia) - [Mexico](https://apptail.io/app/worldscales-Apzl/mexico) - [United Kingdom](https://apptail.io/app/worldscales-Apzl/united-kingdom) - [Netherlands](https://apptail.io/app/worldscales-Apzl/netherlands) - [Norway](https://apptail.io/app/worldscales-Apzl/norway) - [Austria](https://apptail.io/app/worldscales-Apzl/austria) - [Denmark](https://apptail.io/app/worldscales-Apzl/denmark) - [Egypt](https://apptail.io/app/worldscales-Apzl/egypt) - [Switzerland](https://apptail.io/app/worldscales-Apzl/switzerland) - [Italy](https://apptail.io/app/worldscales-Apzl/italy) - [Japan](https://apptail.io/app/worldscales-Apzl/japan) - [Philippines](https://apptail.io/app/worldscales-Apzl/philippines) - [Pakistan](https://apptail.io/app/worldscales-Apzl/pakistan) - [Portugal](https://apptail.io/app/worldscales-Apzl/portugal) - [Singapore](https://apptail.io/app/worldscales-Apzl/singapore) - [Senegal](https://apptail.io/app/worldscales-Apzl/senegal) - [Thailand](https://apptail.io/app/worldscales-Apzl/thailand) - [Tunisia](https://apptail.io/app/worldscales-Apzl/tunisia) - [Taiwan](https://apptail.io/app/worldscales-Apzl/taiwan) - [Ukraine](https://apptail.io/app/worldscales-Apzl/ukraine) - [South Africa](https://apptail.io/app/worldscales-Apzl/south-africa) - [Armenia](https://apptail.io/app/worldscales-Apzl/armenia) - [Argentina](https://apptail.io/app/worldscales-Apzl/argentina) - [Azerbaijan](https://apptail.io/app/worldscales-Apzl/azerbaijan) - [Brazil](https://apptail.io/app/worldscales-Apzl/brazil) - [Belarus](https://apptail.io/app/worldscales-Apzl/belarus) - [China](https://apptail.io/app/worldscales-Apzl/china) - [Colombia](https://apptail.io/app/worldscales-Apzl/colombia) - [Czechia](https://apptail.io/app/worldscales-Apzl/czechia) - [Dominican Republic](https://apptail.io/app/worldscales-Apzl/dominican-republic) - [Algeria](https://apptail.io/app/worldscales-Apzl/algeria) - [Ecuador](https://apptail.io/app/worldscales-Apzl/ecuador) - [Spain](https://apptail.io/app/worldscales-Apzl/spain) - [Finland](https://apptail.io/app/worldscales-Apzl/finland) - [Hong Kong SAR China](https://apptail.io/app/worldscales-Apzl/hong-kong) - [Croatia](https://apptail.io/app/worldscales-Apzl/croatia) - [Hungary](https://apptail.io/app/worldscales-Apzl/hungary) - [Indonesia](https://apptail.io/app/worldscales-Apzl/indonesia) - [India](https://apptail.io/app/worldscales-Apzl/india) - [South Korea](https://apptail.io/app/worldscales-Apzl/south-korea) - [Cayman Islands](https://apptail.io/app/worldscales-Apzl/cayman-islands) - [Kazakhstan](https://apptail.io/app/worldscales-Apzl/kazakhstan) - [Lithuania](https://apptail.io/app/worldscales-Apzl/lithuania) - [Madagascar](https://apptail.io/app/worldscales-Apzl/madagascar) - [Malaysia](https://apptail.io/app/worldscales-Apzl/malaysia) - [Nigeria](https://apptail.io/app/worldscales-Apzl/nigeria) - [New Zealand](https://apptail.io/app/worldscales-Apzl/new-zealand) - [Peru](https://apptail.io/app/worldscales-Apzl/peru) --- ## 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. 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