RS vs Wormhole
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RS
Compose, sequence, loop, and harmonize with a virtual vocal ensemble. This app offers four distinct modes for creating complex vocal arrangements, including real-time harmonization with your microphone and AI-powered song generation.
- Real-time vocal harmonization
- Multi-octave virtual keyboard
- Four recording loops for layered harmonies
- Manual note editor for pitch and length
- 16-pattern song sequencing
- AI song generation
- Native gear synchronization
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Unleash the full voice of your choir. RS-CHOIR is the ultimate companion app designed exclusively for the Teenage Engineering Choir. Whether you are a composer, producer, or live performer, RS-CHOIR equips you with powerful tools to compose, sequence, loop, and harmonize in real-time. Transform your choir into a fully customizable vocal ensemble with four intuitive modes and advanced synchronization features. FOUR POWERFUL MODES ****Loop & Edit: Play your choir using a multi-octave virtual keyboard. Capture your inspiration with four dedicated recording loops to build complex, layered harmonies. Need perfection? Use the manual note editor to fine-tune the pitch and length of any note until it perfectly fits your vision. ****Sequence: Arrange complete, evolving song structures by chaining up to 16 unique patterns. Define single notes or full chords for every step. Don’t just play notes—play words! Assign specific vowels and consonants to craft custom lyrics and vocal articulations. ****Sing: Turn your Choir into your personal backup singers. Simply tap to latch your microphone, sing a tone, and listen as the Choir seamlessly harmonizes with you in real-time. ****Play: Effortlessly save your compositions and play whenever you want. You can also load MP3 backing tracks that play in perfect parallel with your choir, giving you a massive, full-band sound. ADVANCED PRO FEATURES Native Gear Sync: RS-CHOIR isn't just an isolated app. Send an audio master clock sync pulse directly from your device to perfectly time your Choir with external gear, including Teenage Engineering Pocket Operators, modular synths, and other grooveboxes. AI Song Generation: Generate entirely new songs in seconds! Use our built-in AI workflow and optimized prompts with your favorite AI chat to generate fresh song data. Paste it back into the app, and your Choir will sing a brand-new, original piece. Full Vocal Integration: Bring your choir to the next level. Move beyond simple melodies by adding dedicated vocals and articulations to your masterpieces. Ready to start conducting? Download RS-CHOIR today and bring your vocal arrangements to life. Disclaimer: RS-CHOIR is an independently developed application and is not affiliated with, associated with, or endorsed by Teenage Engineering.
Wormhole
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Wormhole turns any sound you have into music you made. Drop in a clip — a video from your camera roll, a voice memo, a file, or something you hum into the mic. Wormhole listens to it, finds the tempo and the key on its own, and chops it into slices you can play. From there you are one tap away from a beat. FIVE INSTRUMENTS, ONE SCREEN Drums, 808, keys, your chopped clip, and a lead — all on one page. Tap a row to open its notes and draw them straight in. There is no edit mode to learn and no menu tree to climb. If you can tap, you can write a pattern. EVERY NOTE IS IN KEY Wormhole knows what key your project is in and keeps every instrument inside it. You can't place a wrong note. Change the key later and your melodies move with it — the app remembers the scale degree, not the absolute pitch. THE WORMHOLE Send any sound into the Wormhole and it comes back out in your key. Freeze a single grain into a pad. Smear a vocal into a choir. Stutter a snare into a fill that was never played. It is a scale-locked granular bus, and it is the reason the app is called what it is called. CHOP IT YOUR WAY Slice on transients, slice on the grid, or cut it by hand — tap the waveform to add a cut, drag a dot to move one. Pick a part of a long clip and chop only that. Every slice gets its own pitch, filter, and length. STUCK? PRESS FLIP One button writes a whole beat — drums, bass, chords, melody, all in your key, all editable. Press it until something grabs you, then make it yours. LOOPS BECOME A SONG Build up to four versions of every instrument, then place them on a timeline. Drag a block's edge to repeat it. That is the entire arrangement view. POST IT Export a 1080x1920 vertical video with a reactive visual, ready to go straight to your feed. Or take M4A for other apps and 24-bit WAV for your DAW. BUILT PROPERLY Real-time audio engine written from scratch. No login, no account, no cloud, no tracking — your projects live on your phone. Works fully offline. Something you already have is a beat. It just needs chopping. https://wormhole.aimoxyz.xyz/terms
Screenshots
Verdict
RS and Wormhole are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. RS sells 3 one-off in-app purchases and Wormhole sells 2 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.
RS ships an update every 4 days, Wormhole every 6 days. Both last shipped on October 25, 2026.
| Parameter | RS | Wormhole |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 4 days — better | Every 6 days |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Rolf Schmucker | Moritz Maximilian Fricke |
In-app purchases
RS
- Creator Version$4.99
- Creator Version$8.99
- Creator Version$14.99
Wormhole
- Wormhole Pro Monthly$6.991 Month
- Wormhole Pro Yearly7 Days trial$44.991 Year









