Chord Randomizer vs Rapper
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Chord Randomizer
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Chord Randomizer is a powerful music theory practice tool from Nathaniel School of Music. Whether you're a beginner just learning your triads or an advanced musician drilling diatonic progressions, Chord Randomizer keeps your practice sessions fresh and effective. FEATURES - Randomised chord progressions so you never practice the same sequence twice - Three skill levels: Beginner, Intermediate, and Diatonic - Live audio playback with realistic instrument sounds: piano, guitar, harp, and cello - Arpeggio and block-chord playback modes, each with independent volume - Built-in metronome with configurable BPM from 40 to 240 - Playback speed multiplier: 1x, 1.5x, and 2x - Chord rate control: change chords every beat, every bar, or every two bars - Loop mode for continuous practice - MIDI export for use in any DAW - PNG export to share a clean chord chart with students or bandmates - Dark, professional UI optimised for practice sessions PERFECT FOR - Music students building chord recognition - Teachers generating practice exercises - Songwriters and composers exploring new progressions - Guitarists, pianists, and keyboardists of all levels Chord Randomizer runs entirely on-device. No account is needed, and no data is collected.
Rapper
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Turn any idea into a real rap song โ bars written, beat produced, artwork generated โ in seconds, for free. No studio. No ghostwriter. No subscription. Rapper is the AI that sits in your corner and builds a complete track from whatever's on your mind. Type a concept, speak it out loud, and the song comes to life before you finish your sentence. The bars are built for the genre you pick โ not copy-paste filler but real verses, hooks, and flows tuned to your vibe. Trap, drill, boom bap, melodic rap, lo-fi hip-hop, west coast โ choose your lane and the AI locks in with the right energy, cadence, and wordplay for that sound. Every track drops with a produced beat that matches your style and tempo. Pull up the full-screen player and you get the whole experience โ cover art, synced scrolling lyrics, and a scrubber to move through the song. It's not just a text output. It's a real track. Save everything to your personal library. Rename it, cache it offline, delete what doesn't hit. When you've got something fire, share it with a single public link โ one tap and you're putting people on to your sound. No account required to start. No subscription. No paywall. Rapper is completely free because the come up shouldn't cost anything. Generate tracks in multiple languages and bring your sound to wherever you're building from. Stuck on what to make? Starter Ideas kick off a track instantly so you never freeze on a blank page. One tap and you've already got a direction. Your next song is one idea away. Drop it in.
Screenshots
Verdict
The clearest difference is ads: Chord Randomizer at none against Rapper's shown. Chord Randomizer also leads on device support (3 vs 1) and iOS requirement (15.0 vs 18.0). On price and in-app purchases there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Chord Randomizer | Rapper |
|---|---|---|
| Price | Free | Free |
| Update frequency | โ | Every 3 weeks |
| Ads | No โ better | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod โ better | iPhone |
| Requires iOS | 15.0 โ better | 18.0 |
| Further details โ not scored | ||
| Size | 19 MB | 10 MB |
| Age rating | 4+ | 12+ |
| Developer | Jason Zachariah | Konrad Sierzputowski |
In-app purchases
Chord Randomizer
No in-app purchases
Rapper
No in-app purchases









