# Sparkle - Cross-Synthesis > Advanced spectral hybridization tool for sound transformation and audio synthesis. (iPhone/iPad app by apeSoft.) - Source: https://appshunter.io/ios/app/sparkle-cross-synthesis/id818477094 (this page in markdown: same URL + `.md`) - Developer: [apeSoft](https://appshunter.io/developer/464660782) - Category: Music, Education - Price: $4.99 (on sale, was $8.99) - Rating: 5.00/5 from 48 App Store ratings · 22 written reviews indexed - Age rating: 4+ - Requires: iOS 15.6 · 35 MB - Languages: American English - Released: 2014-12-23 - Data updated: 2026-08-26 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/sparkle-cross-synthesis/id818477094/reviews.md ## What is Sparkle? Sparkle is a tool for advanced spectral hybridizations made of several algorithms that operate on frequency domain. By means of envelope preservation and phase-sync processing it can creates high-quality sound transformations. The basic idea is to transfer the temporal structure of a sound (source) onto another sound (target) of which the spectral properties are preserved. Simply put, you can take a voice and make it sing a Beethoven’s symphony! ## Key features - Spectral hybridization - Envelope preservation - Phase-sync processing - High-quality sound transformations - Temporal structure transfer - Spectral property preservation ## Recent user reviews (10 of 22) All indexed reviews: https://appshunter.io/ios/app/sparkle-cross-synthesis/id818477094/reviews.md ### 5/5 — incredible *2021-06-30* ignore that musiz@ppjunkie punk this is some of that good noize ### 5/5 — If you like Industrial, Dark Ambient & TripHop, get this *2019-12-01* This is Dedalus’s posh uncle. And like Dedalus, make sure you run a limiter after it or your ears will pay the price, it can be unwieldy with levels. For best results, turn off or keep the reverb low, the reverb seems to dull & smear the fourier transforming. If using drumloops make sure you have the bpm’s. Do read the manual because it’s not clear what some parameters do. And make sure to exploit the control menu mapping with midi cc, LFOs etc to all the parameters like Hybridization & Envelope. This app gives you amazing amounts of control. Sparkle also does really amazing & eerie vocoding effects similar to those on “Base Metal” by Download. ### 5/5 — Thanks for AUV3. *2019-11-27* Only thing I have to say about this, is thanks for finally bringing it into the AUv3 format. ApeSoft is by FAR my favorite music dev for iOS. Trust me, I literally own 95% of their apps (just missing one that isn’t really an instrument but more like an interactive class, so it doesn’t even count that much). I must say you are a genius my friend, I couldn’t be happier than I am thanks to your apps (you have changed dramatically the way I do music, thank you). ### 5/5 — Great *2019-11-03* Gonna take some time to learn. Different. I haven't heard anything like. Use your own sample or tune up to 320 secs and mix the two (Hybridization). Lots of control and FX. Got very good results just messing around. ### 5/5 — Great sound synthesis. *2019-07-10* Top notch app. I just love what you can do with it. Make one new sound with 2 different ones. Should have written this long ago. Luckily there was an update today and I saw the rating. Can’t let that pass. Eery, cinematic, stuff of nightmares... you name it. You can achieve it with this app. One of the bestest in the app store. ### 5/5 — Really nice *2018-11-28* Complex. But musical. I have, I think all the apps this individual made and they are all very cool but in my opinion more on the front of making wicked gnarly noise more than music. The ability to feed a drum loop into the one side then putting a pad or sustained sound into the other essentially cutting and gating into rhythmic bits the pad’s sound even to a designated tempo. (Was that even a sentence?) But isn't this achieved with a vocoder or a nice side chain compressor too? This does it differently. (I think) I am SURE I am only skimming the surface here. This is a nice app that is complex but less complex than some of his other apps. I like it a lot and have spent hours experimenting with just making non-rhythmic sounds hop and skip in time to other more tempo-laden riffs. It’s time well spent! Thank you for your continued creative tools! Additionally: I LIKE your GUI’s still and appreciate minimalist GUI's in general. iPad and iPhone apps have, in my opinion, crossed into the “pro” realm awhile back and I appreciate devs who allow me to not have to be on the most current pad or os to use their software and still get big nice sound. ### 5/5 — Weird & Wonderful! *2018-09-07* Like many of this dev’s apps, this is very creative and deep with excellent sound quality. It is great value for money, and has all the latest updates required for an iOS app to work well with other music apps. Fully recommended. ### 5/5 — Essestial Experimental *2018-04-29* If youre into IDM or experimental then this along with all of apesofts stuff is essential. Sparkle is great for combining textures and patterns in a uinique way. Great with vocal or other files. Sparke goes great with Nave and Scythe for making something new out of vocals or melodies. ### 5/5 — Truly a phenomenal app *2017-01-09* For sound design this is amazing and unique. If you like creating and experimenting, tinkering around with sounds you can't go wrong with this app. Just like it says " creates high-quality sound transformations. The more you play with this the more you'll see you can do and the more valuable a tool you'll realize it is. Beautiful job they've done on this app. ### 5/5 — Another Great from the Ape *2016-12-14* I own all but one app from this company and I've yet to be disappointed. I love sound design and do a good amount of work using modular synths. I rarely ever use the iPad or apps to make music but Ape Soft has some well thought out apps that are truly top notch. The sounds that com out of Sparkle are absolutely stunning in. This is a dream for sound design and experimentation. I dump my own samples into it and toy around and usually come out with more great sounding samples. Amazing. ## Frequently asked questions about Sparkle ### What is Sparkle used for? Sparkle is a tool for advanced spectral hybridizations, creating high-quality sound transformations by transferring the temporal structure of one sound onto another while preserving spectral properties. ### How much does Sparkle cost? Sparkle is a paid application priced at $8.99. ### What devices is Sparkle available on? Sparkle is available on iPhone, iPad, and iPod devices. ### How often is Sparkle updated? Sparkle was last updated on July 28, 2025, indicating active development and support. ### What is the age rating for Sparkle? Sparkle has an age rating of 4+, making it suitable for a wide range of users. ### What makes Sparkle's sound transformations unique? Sparkle utilizes envelope preservation and phase-sync processing for its spectral hybridizations, allowing for unique and high-quality sound manipulation. ### Can Sparkle be used offline? As a music production tool focused on audio processing, Sparkle is designed to function without an internet connection once installed. ### What kind of user feedback does Sparkle have? Sparkle has received excellent user feedback, reflected in its rating of 5.0 stars from 48 ratings. ## Version history (last 5 releases) ### 2.5.4 — 2025-07-28 + Fixed load sample Source/Target in standalone APP ### 2.5.3 — 2025-07-22 + macOS AUv3 UI improvement + macOS AUv3 AUParameter fixed + Fixed Samples Import files + Improved stability + Updated to the latest iOS SDK + Updated dependencies + Fixed various bugs ### 2.5.1 — 2025-07-15 + Fixed Samples Import files + Improved stability + Updated to the latest iOS SDK + Updated dependencies + Fixed various bugs ### 2.5 — 2025-07-12 + Improved stability + Updated to the latest iOS SDK + Updated dependencies + Fixed various bugs ### 2.4 — 2024-07-14 Maintenance Updates Latest iOS SDK Update Fixed an issue causing the app to crash when double tap two knobs together Compatibility with Apple Silicon Macs ## Apps similar to Sparkle | App | Rating | Price | Category | | --- | --- | --- | --- | | [B-System CBA Accordion Tutor](https://appshunter.io/ios/app/b-system-cba-accordion-tutor/id1037609940) | 3.5 (2) | $1.99 | Music | | [ChordsVault](https://appshunter.io/ios/app/chordsvault/id1024176980) | 5.0 (1) | Free | Music | | [LoopDeLoop](https://appshunter.io/ios/app/loopdeloop/id982766020) | 1.0 (2) | Free | Music | | [Chord Tone Soloing For Guitar](https://appshunter.io/ios/app/chord-tone-soloing-for-guitar/id1031680220) | 3.5 (2) | $9.99 | Music | | [Sight Reading Factory](https://appshunter.io/ios/app/sight-reading-factory/id1046058520) | 2.7 (382) | Free | Music | | [Music Wrench](https://appshunter.io/ios/app/music-wrench/id965939820) | 4.5 (21) | Free | Music | ## More apps by apeSoft - [iDensity](https://appshunter.io/ios/app/idensity/id464660779) - [iPulsaret](https://appshunter.io/ios/app/ipulsaret/id565880268) - [Stria](https://appshunter.io/ios/app/stria/id625740515) - [iVCS3](https://appshunter.io/ios/app/ivcs3/id665703927) - [SOLO Nr.19](https://appshunter.io/ios/app/solo-nr19/id884781236) All apps by apeSoft: https://appshunter.io/developer/464660782 ## Related topics [music sparkle](https://appshunter.io/ios/topics/music-sparkle) --- *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 2026-08-26.*