# WorldScales — user reviews > 44 indexed App Store user reviews of WorldScales by Kelfar Technologies, rated 4.70/5 from 21 ratings. - Source: https://appshunter.io/ios/app/worldscales/id505034913/reviews - App overview in markdown: https://appshunter.io/ios/app/worldscales/id505034913.md - Rating breakdown: 5★ 17 · 4★ 3 · 3★ 0 · 2★ 0 · 1★ 1 ## Newest reviews (14 of 44) ### 4/5 — Please update the application *2017-01-18* نرجو تحديث التطبيق ونرجو اظافة الات اكثر واقعية ### 4/5 — Waiting *2015-12-15* 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. ### 4/5 — Engineer *2015-09-28, version 1.0.5* The last update of this application does not work please check it. ### 5/5 — Scale tuning still not working *2015-09-27* This application is really helping me learning Byzantine. Thanks Karim. I have also had a problem with the scale micro tuning and even after updating to 1.0.5.1 (and iOS version 9.0.1) it is not functional and so we obviously cannot play any of the modes. I can't even go back to a previous working version. Is their an actual fix for this? Thanks. ### 4/5 — On the (Audio)Bus...almost *2015-09-22* At last, this app has AudioBus compatibility, gaining it three more stars. Unfortunately, its stability is rather flaky under AudioBus, with any attempt to use more than one filter at a time resulting in silence. If the developer is listening now, please fix. Nic ### 5/5 — Great app💐⭐️⭐️⭐️⭐️⭐️ *2015-03-06* Every musiton should have it . ### 4/5 — Audiobus *2014-10-10, version 1.0.4* Audiobus support PLEASE!!!!!!!!! ### 5/5 — I love this so much thank you! *2014-08-05* 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. ### 5/5 — Every Chanter needs this app! *2014-07-02* 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! ### 5/5 — Great unique app! *2014-06-20* 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!!! ### 5/5 — Fantastic & unique app *2014-04-16, version 1.0.3* If you want to practise maqāmat/makamlar this is a great tool. Please can you add Turkish note names and Indian SARGAM (or even better the ability to write own note names?). Also a bit more flexibility with how we organise user created scales, e.g. user folders. Maybe an 'autoplay' feature to quickly audition scales in the selection menu (with support for ascending and descending scale forms) Perhaps a basic recorder with loop feature to make the app useful for players to play their instruments along with the app. Great start, thank you for the app, look forward to updates. ### 4/5 — برنامج رائع *2014-03-20, version 1.0.3* 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 ### 5/5 — Awesome app LOVE it *2014-02-13, version 1.0.3* 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. ### 5/5 — Brilliant *2013-06-29* Absolutely amazing. Perfect for anyone interested in world music. Has made under standing tonality so much easier. Thanks ## Most critical reviews (10 lowest-rated) ### 1/5 — APP stops abruptly *2024-02-10* 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, **Developer response:** Dear Johnny, can you tell us what is the issue exactly. The APP has no bugs otherwise the APP will not be approved on the AppStore. Can you do me a favor? Tell us what kind of IPAD do you have? One thing you might do, please delete the APP and reinstall. Date: 9/03/2025 - We haven’t received a response from you yet. Could you please let us know if you’re still experiencing the same issue?” Thank you! ### 1/5 — Unstable n won't save *2014-02-25, version 1.0.3* 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? ### 1/5 — good but not good *2012-08-28, version 1.0.1* this abs is good to play with but crash too many times and sounds like a toy. I had fun with it tho. ### 2/5 — Not good keys size...! *2015-01-19, version 1.0.4* 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 ### 2/5 — Meh *2014-12-15* The main feature for this app was the quarter tone or the ability to modify your scales by cents, but most of the sounds of the instrument is so old and low quality , but if you are interested in oriental instruments this is the app ### 2/5 — Good ...but need a lot of improvements and updates *2012-07-19* Good if you use iPad screen for playing Have a lots of problems using external midi , pitch not working , crash many times .....reverb quality is so bad , simply its not for serious using . Need an update with a lots of fixes and improvements ... ### 3/5 — Interesting, But Needs an Update! *2014-11-04, version 1.0.4* Seems like a cool app, although it no longer works with Audiobus now until they update their audiobus implementation. ### 3/5 — Prior version better *2012-12-07* The original Byzantine Choir sounds were so much more realistic. With the new update they are not that great. I hope they re-implement them back into the app. ### 3/5 — WorldScales has potential, but version 1.0.0 needs work *2012-03-14* For learning about and demonstrating different tunings, it is filling a needed niche for iPad apps. Hopefully, this is a work in progress, because with a few tweaks (some major and some minor-- pardon the pun) it could be a very strong app. TUNINGS/SCALES: WS works as described and is pretty intuitive. 12 knobs allow you to tune the notes within an octave. Change the root key shifts the values on the knobs respectively. It also allows you to set frequency ratios (e.g., the interval of a 5th can be a 2:3 ratio of frequencies, a Major 3rd can be a 4:5 ratio). You have to choose the note you are setting the ratio for, but it can be a little unclear which note you are tuning with this method. It always brings up "2/3" as the default ratio, even if you are tuning a different note of the scale. So it might be nice if it used a few other JUST intonation intervals for other notes besides the 5th. SOUNDS: There are a few useable sounds in the included list. Some of the samples are a bit rough in terms of playability. Some samples have too much attack for melodic playing, or there aren't enough multi-samples across the keyboard, so high or low-notes sound stretched too far. The piano sound uses octaves instead of single notes. There is quite a bit of aliasing on some samples when you play very high on the keyboard (especially the synth waves). I think the samples/sounds is the aspect of WS that needs the most improvement. USER INTERFACE: The interface is pretty logical and simple. Little arrows on the sides of the root key and transpose parameters blend in with the background and are difficult to see. Some buttons require you being very accurate with your tap. But the overall set up is pretty clear. SCREEN KEYBOARD The keyboard is only good for auditioning the scales. Changing ranges is clunky, requiring that you press the arrows on either end and it shifts the keyboard by only a few keys. For now, expect to play the app with a MIDI keyboard. I'd love to see WS's screen keyboard evolve in future versions so that playing is more functional and shifting ranges is more fluid. It would be a much better playing experience if it went in the direction of Animoog or Garageband's keyboard. But any improvements would be welcome. VALUE If I knew the app was going to get better, I'd say $4.99 is a ok price. But honestly, I'd have been happier with this app if it was in the $1 to $2 range at this stage. If the samples were better, it would be easier to recommend. ### 4/5 — Great, but I’d like more GarageBand support. *2026-07-10* This is absolutely the best app for this kind of thing with a vast array of scales and instruments, not to mention its customizability. But the only reason I don’t leave a full five stars is because you can’t use it as an Audio Unit Extension in GarageBand, only uneditable Inner-App Audio which is really Frustrating. I really hope they'll add this kind of compatibility in a future update. ## Most praised reviews (10 highest-rated) ### 5/5 — Amazing app it’s very helpful *2025-08-27* I like it ### 5/5 — Excellent App - Best in it’s Class *2024-06-17* 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. ### 5/5 — The best app of its kind *2024-05-13* 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! ### 5/5 — The best in its class *2024-05-02* This app is the bomb! Thank you for your recent update too, Karim! ### 5/5 — World Scales: Beginner-friendly and expert-versatile! *2024-01-05* 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. ### 5/5 — Learning Chants *2022-04-28* 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. ### 5/5 — Exactly what I was looking for! *2021-06-05* I’ve been looking for an app that can control the individual tuning of notes to help me with learning Byzantine Music. This is app does exactly what I need. The sounds are quite decent, and the ability to control the tuning as well as activate/deactivate note offset is perfect. ### 5/5 — AUv3 Please ! *2021-04-15, version 1.0.6* Please consider supporting AUv3 to use in AUM and other iOS DAWs. Thank you so Much ### 5/5 — مع الاسف لايوجد تحديثات *2019-03-08, version 1.0.6* برنامج جميل وينقصه التحديثات والتطوير ### 5/5 — Oriental Maqam + Audiobus *2015-09-29* Excellent, thank you for the update. App works as described. This app has many Maqam presets. Very useful. Now I wish this app could do oriental loops or beatbox with baladi maqsum malfuf --- *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 2026-08-30.*