--- title: "Cornerman for K.O. II - Reviews, Revenue and Downloads in United States | Apple App Store" description: "Cornerman for K.O. II is a third party Sample Librarian for the Teenage Engineering EP-133 K.O. II Sampler Composer. The app doesn't make any sound by itself and is designed to work connected to the " --- # Cornerman for K.O. II — United States > Sample Librarian for EP-133 ![Cornerman for K.O. II App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/7f/6e/9e/7f6e9ec9-00d1-28b1-6867-1d5af4f402dc/AppIcon-0-0-1x_U007emarketing-0-6-85-220.png/434x0w.png) **Developer:** [Delta Seven Kft](https://apptail.io/developer/delta-seven-kft-XIuc) **Category:** Music **Rating:** 2.5/5 (11 ratings) **Price:** Free **Bundle ID:** com.drummachinefunk.cornerman **Store:** Apple App Store **Country:** United States **Version:** 1.0.2 (released 2025-05-21) **Original Release:** 2024-11-11 **Languages:** English **App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id6499280264) **AppTail Page:** [https://apptail.io/app/cornerman-for-ko-ii-zwlu/united-states](https://apptail.io/app/cornerman-for-ko-ii-zwlu/united-states) ## Cornerman for K.O. II Description Cornerman for K.O. II is a third party Sample Librarian for the Teenage Engineering EP-133 K.O. II Sampler Composer. The app doesn't make any sound by itself and is designed to work connected to the EP-133 via an USB-C connection. IMPORTANT: Please note that due to hardware limitations of the K.O. II the app is only compatible with iOS devices using USB-C ports. Power is provided by the mobile device for the EP-133 while connected. Features: - Upload and download backups from your K.O. II - Organize and share your backups with friends Drum Machine Funk is an independent software developer not affiliated with Teenage Engineering. We develop innovative apps for your favorite sampler and synthesizer. ## Cornerman for K.O. II Screenshots - [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/fd/fe/d8/fdfed831-14d7-7602-0a27-795fb60eea17/2aef4210-f4d3-4025-a0ae-e077f35953b9_CM-AppStore1.png/1242x2688.png) - [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/61/1a/0d/611a0d13-80ac-9e43-bee7-140b027411c8/69e5dd20-349e-4cd7-b174-77fc9866b928_CM-AppStore2.png/1242x2688.png) - [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/c5/7e/23/c57e236b-955a-1e68-95b4-e31d28ac8893/b9ce32cc-d7e7-4e9b-90f1-8d7588b5a520_CM-AppStore3.png/1242x2688.png) - [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/b3/2c/66/b32c66b5-ec8e-8f0c-154e-9125617ca2a7/e928671b-b2dc-4327-9e4e-0cea6d28ebe1_CM-AppStore4.png/1242x2688.png) ## Cornerman for K.O. II Rating Breakdown in United States - 5 stars: 3 (27%) - 4 stars: 1 (9%) - 3 stars: 0 (0%) - 2 stars: 1 (9%) - 1 stars: 6 (55%) ## Cornerman for K.O. II Reviews in United States ### ***** "My bad" Actually , I m here now to say sorry , I figure out that my phone is tha the latest , but I was able to download the app in my laptop and is working perfectly t and exporting the files, is actually better than using the phone , so thanks for that , and I apologize completely about my past reviews based on my lack of knowledge, thank you ! For making this happened and il give you 10 stars , and I’ll give you authorization to delete the past bad review I left . -- Streetvoices, 2025-07-31 ### *---- "It sucked want my money back" It don’t work end of story $15 dollars that I want back and I feel like I’m entitled to $20 for having to go through the trouble of getting the app -- crimm de, 2025-03-26 ### *---- "Don’t waste your time ( or money)" Total garbage app. Wasn’t worth downloading. Crashes constantly -- Ironlung76, 2025-03-21 ### *---- "doesn’t work" I was excited to see an app like this as i was disappointed that TE didn’t have anything offline that didn’t require internet connection and thought an app was a good idea. I paid $15 and it doesn’t work. it just doesn’t work. i connect my ep-133 to my phone with c to c charger cable, hit backup button, wait as it shows a progress bar slowly fill (indicating that it’s doing something), then…. nothing. no backup. nothing happens. i’m so angry that i can’t get a refund on an app that doesn’t do the only thing it’s designed for. i got denied on my refund request. i submitted an appeal explaining the app doesn’t work. It doesn’t do the only thing it advertises and that i spent $15 and should be entitled to it back but my appeal was denied. don’t waste your money. I’m really frustrated and angry at being taken advantage of. -- jed5&4588;, 2025-02-23 ### *---- "$15 for a File-Saving App? Way Pricier Than Most in the App Store!" I was excited to download it because it said it was free. I would’ve been fine paying a couple of bucks, but it turned out to cost $15. That’s much more expensive than most apps in the App Store with similar functionality! I wouldn’t mind paying a small fee, but $15 feels a bit steep for an app that’s primarily for saving files. Maybe the price would be justifiable if it allowed uploading and downloading samples like the web app does. -- Binary vision, 2024-12-20 ### ***** "So excited to see a Teenage Engineering app on iOS" This app is awesome - obviously it backs up your Ko ii - onto your device, without the need for going online to the TE website for the ep-133 browser tool. I hope to see the ability to navigate/edit folders and samples too one day; as it is fantastic work and thank you for making this! -- yellow eyez, 2024-11-20 [View all Cornerman for K.O. II reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews) ## Cornerman for K.O. II In-App Purchases | Item | Price | |------|-------| | Restore/Backup Functionality | $14.99 | ## Apps Similar to Cornerman for K.O. 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II Available In - [United States](https://apptail.io/app/cornerman-for-ko-ii-zwlu/united-states) - [Germany](https://apptail.io/app/cornerman-for-ko-ii-zwlu/germany) - [United Kingdom](https://apptail.io/app/cornerman-for-ko-ii-zwlu/united-kingdom) - [Russia](https://apptail.io/app/cornerman-for-ko-ii-zwlu/russia) - [Switzerland](https://apptail.io/app/cornerman-for-ko-ii-zwlu/switzerland) - [Chile](https://apptail.io/app/cornerman-for-ko-ii-zwlu/chile) - [Colombia](https://apptail.io/app/cornerman-for-ko-ii-zwlu/colombia) - [Czechia](https://apptail.io/app/cornerman-for-ko-ii-zwlu/czechia) - [Denmark](https://apptail.io/app/cornerman-for-ko-ii-zwlu/denmark) - [Egypt](https://apptail.io/app/cornerman-for-ko-ii-zwlu/egypt) - [Finland](https://apptail.io/app/cornerman-for-ko-ii-zwlu/finland) - [Greece](https://apptail.io/app/cornerman-for-ko-ii-zwlu/greece) - [Hong Kong SAR China](https://apptail.io/app/cornerman-for-ko-ii-zwlu/hong-kong) - [Ireland](https://apptail.io/app/cornerman-for-ko-ii-zwlu/ireland) - [India](https://apptail.io/app/cornerman-for-ko-ii-zwlu/india) - [Japan](https://apptail.io/app/cornerman-for-ko-ii-zwlu/japan) - [South Korea](https://apptail.io/app/cornerman-for-ko-ii-zwlu/south-korea) - [Kuwait](https://apptail.io/app/cornerman-for-ko-ii-zwlu/kuwait) - [Netherlands](https://apptail.io/app/cornerman-for-ko-ii-zwlu/netherlands) - [New Zealand](https://apptail.io/app/cornerman-for-ko-ii-zwlu/new-zealand) - [Philippines](https://apptail.io/app/cornerman-for-ko-ii-zwlu/philippines) - [Poland](https://apptail.io/app/cornerman-for-ko-ii-zwlu/poland) - [Portugal](https://apptail.io/app/cornerman-for-ko-ii-zwlu/portugal) - [Romania](https://apptail.io/app/cornerman-for-ko-ii-zwlu/romania) - [Thailand](https://apptail.io/app/cornerman-for-ko-ii-zwlu/thailand) - [Ukraine](https://apptail.io/app/cornerman-for-ko-ii-zwlu/ukraine) - [Austria](https://apptail.io/app/cornerman-for-ko-ii-zwlu/austria) - [South Africa](https://apptail.io/app/cornerman-for-ko-ii-zwlu/south-africa) - [Azerbaijan](https://apptail.io/app/cornerman-for-ko-ii-zwlu/azerbaijan) - [Belgium](https://apptail.io/app/cornerman-for-ko-ii-zwlu/belgium) - [Canada](https://apptail.io/app/cornerman-for-ko-ii-zwlu/canada) --- ## 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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