Cornerman for K.O. II vs PunchKit
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Cornerman for K.O. II
This app serves as a sample librarian for the Teenage Engineering EP-133 K.O. II sampler. It allows users to upload, download, and organize backups directly from their device. Note that it requires a USB-C connection and is only compatible with iOS devices featuring such ports.
- Sample librarian for EP-133 K.O. II
- Upload and download backups
- Organize and share backups
- USB-C connection required
- iOS device compatibility
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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.
PunchKit
This app enhances your music production workflow with a compatible hardware device. It allows instant access to projects, sounds, and memory, plus recording, editing, and backup capabilities. Streamline your creative process and manage your music projects efficiently.
- Automatic device connection
- Browse projects, sounds, and memory
- Record USB audio and iOS input
- Signal-activated recording
- Bundle recordings for backup
- Add effects to recordings and samples
- Backup and restore projects
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PunchKit is a local-first companion for the Teenage Engineering EP-133 K.O. II, EP-1320 Medieval, and EP-40 Riddim. Build kits, manage samples, record and process audio, separate stems, perform live effects, and create dependable backups from your iPhone or iPad. MIDI PLAYGROUND - Layer independent Chords, Melody, and Bass machines beside a connected EP - Follow EP MIDI clock with retained-BPM fallback if pulses stop - Use Auto Key or choose key, scale, harmony, voicing, inversion, octave, and expression manually - Shape chord feel with strum order, groove, timing, humanization, velocity, and release - Build melody and bass phrases on 16-step note grids, with octave transposition while playing OFFLINE KIT BUILDER - Build and save 12-pad kits without connecting an EP - Browse and preview samples from Files, then assign them to pads - Trim or convert samples for EP limits - Import, export, duplicate, rename, and share kit archives - Connect later to upload a kit to a chosen project and group DEVICE AND SAMPLE MANAGEMENT - Automatically detect compatible EP devices over USB MIDI - Browse projects, groups, pads, assignments, sounds, and memory slots - Browse one shared local Sample Shelf across Library, Projects, and Kit Builder - Drag a complete folder, including nested folders, to a Library slot - Review each file's path, duration, source size, converted device size, and memory before upload - Remove or edit individual pending samples without changing shelf files - Choose free-slot or sequential placement and explicitly confirm overwrites RECORD, EDIT, AND PUNCH - Record from the microphone or compatible USB audio inputs in WAV or M4A - Use signal-activated recording, waveform trimming, playback controls, and original/rendered versions - Monitor processed USB audio live with adjustable level and latency - Capture beat-synced loops using MIDI, detected audio, or tap tempo, then scratch and perform them from the cassette - Apply stackable Color and tempo-synced Motion effects with Direct or XY controls - Build a custom 12-slot Punch It page PIXEL BACKGROUND STUDIO - Turn short videos from Photos into pixel-art backgrounds - Trim, frame, process, and arrange clips locally - Available with Lifetime Pro LOCAL STEM SEPARATION - Separate a take into vocals, drums, bass, and other - Choose Fast, Balanced, or Best quality - Download the optional model once, then process locally - Mix, save, share, bounce, or upload stems BACKUP AND RESTORE - Back up a bank, project, or everything on your EP - Include assigned samples or create complete device archives - Restore PunchKit ZIP or user-supplied TE .pak backups with preflight MADE FOR IPHONE AND IPAD - Adaptive portrait and landscape layouts - System, Light, and Dark appearances FREE TO START, PRO FOR UNLIMITED WORKFLOWS PunchKit is free to download. Connecting, browsing, previewing, playing, sharing, renaming, deleting, restoring backups, and using existing files remain available without limits. The free tier includes three successful take creations, one local kit creation and one complete kit upload, three successful sample writes, one stem separation, and one bank, project, and complete-device backup. Allowances count only after an operation succeeds. One optional Lifetime Pro purchase removes these limits. There is no subscription, and Pro supports Apple Family Sharing. On iPhone and iPad, people who first downloaded PunchKit before version 1.3 receive Lifetime Pro automatically as founding users. LOCAL-FIRST BY DESIGN PunchKit has no account, advertising, third-party analytics, crash-reporting SDK, or tracking. Audio and EP content stay under your control. Issue reports are sent only when you choose. Optional diagnostics may include redacted app activity and Apple-provided crash information, but exclude audio, samples, project contents, and filenames. DISCLAIMER PunchKit is independent and is not affiliated with or endorsed by Teenage Engineering.
Screenshots
Verdict
The clearest difference is review sentiment: PunchKit at 96% against Cornerman for K.O. II's 20%. PunchKit also leads on rating (4.9 vs 2.5) and update cadence (weekly vs every 3 months). Cornerman for K.O. II's advantage is iOS requirement (14.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Cornerman for K.O. II sells 1 one-off in-app purchase and PunchKit sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
PunchKit holds the better App Store score, 4.9 against 2.5. Both are backed by a comparable volume of ratings — 11 and 51 respectively. Written reviews point the same way: 20% of Cornerman for K.O. II's written reviews are positive against 96% of PunchKit's.
Cornerman for K.O. II ships an update every 3 months, PunchKit weekly. The most recent releases landed on September 13, 2026 and September 22, 2026 respectively.
| Parameter | Cornerman for K.O. II | PunchKit |
|---|---|---|
| Price | Free | Free |
| Rating | 2.5 (11 ratings) | 4.9 (51 ratings) — better |
| Positive reviews | 20.0% of reviews | 95.7% of reviews — better |
| Number of ratings | 11 | 51 — better |
| Update frequency | Every 3 months | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPod | iPhone, iPad, Mac — better |
| Requires iOS | 14.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 45 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Delta Seven Kft. | Kristaps Dreija |
Customer experience
Cornerman for K.O. II
PunchKit
In-app purchases
Cornerman for K.O. II
- Restore/Backup Functionality$14.99
PunchKit
- Small Tip$2.99
- Generous Tip$5.99
- Huge Tip$12.99
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- PunchKit Pro Lifetime$14.99









