Loop Slower vs Jazz Improv Practice & Scales
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Loop Slower
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A simple tool that allows you to loop a section of a song and adjust the playback speed. Perfect for anyone who’s practicing an instrument and want to jam along at desired speed, or when transcribing a song. The app offers: - Changing playback speed - Looping particular section of a song - Saving loops and speed per song automatically - Searching and playing songs from your library (on device) - Searching and playing songs on Apple Music* - Recently played songs for quick access * playing full songs on Apple Music requires an active Apple Music subscription.
Jazz Improv Practice & Scales
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Blank-page paralysis kills more practice sessions than a lack of talent. You sit down, pick the same key you always pick, noodle the same licks, and call it a day. Jazz Improv Practice & Scales fixes that with one tap: it deals you a complete improv prompt — key, scale, tempo, mood and duration — so the decision is made and the only thing left to do is play. Most practice apps hand you a metronome and a chord chart and leave the hard part to you. This app is built around the prompt. Five cards, each one a real musical constraint. Lock the ones you want to keep, reshuffle the rest, and every session lands somewhere you would never have chosen on your own. WHAT YOU GET • Sit down and start playing within seconds — no more deciding what to practise • Stop hiding in C Major: 12 keys × 12 scales dealt at random, biased toward your instrument • Grow one variable at a time — hold your favourite key and let the scale, tempo or mood change • See the exact notes of any scale in any key, with intervals and a plain-English character sketch • Set the groove before the first note with a visual, haptic and click metronome at the dealt tempo • Keep the prompts that sparked something, add a note about what worked, and find them again by search PERFECT FOR • Guitarists and pianists who want to escape the two scales they always fall back on • Horn and string players building fluency across every key before the next gig • Jazz students working through modes, harmonic minor, whole-tone and diminished • Bands and duos who need a shared constraint to jam over in rehearsal WHY NOT JUST PICK A KEY YOURSELF? Because you will pick the comfortable one. A dice roll has no habits. The app pairs a random draw with per-card locks, a tempo feel label from Ballad to Burning, and a session history you can rewind — structure that a coin flip or a scrap of paper will never give you. PRIVATE BY DEFAULT The app works fully offline. There is no account, no sign-in, no ads and no tracking. Your saved prompts and notes live on your device and nowhere else. FULL ACCESS The app requires a subscription or a one-time purchase. Choose a weekly plan, a yearly plan or a lifetime purchase to unlock unlimited prompts, per-card locking, the complete 12-scale library, the metronome and unlimited saved prompts. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period, and can be managed in your App Store account settings. Download Jazz Improv Practice & Scales, tap Shuffle, and play the first prompt it deals you today. Terms of Service: https://pnkl26.web.app/terms-of-service Privacy Policy: https://pnkl26.web.app/privacy-policy Support: pnkhanhlinh0206@gmail.com
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Verdict
The clearest difference is price: Jazz Improv Practice & Scales at Free against Loop Slower's $0.99. Jazz Improv Practice & Scales also leads on update cadence (every 2 months vs every 12 months). Loop Slower's advantage is in-app purchases (none vs 3). On ads, device support and iOS requirement 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
Jazz Improv Practice & Scales is free to download; Loop Slower costs $0.99 up front. Jazz Improv Practice & Scales sells 3 in-app purchases, starting at $2.99 per 7 days. Loop Slower asks for nothing beyond the download.
Loop Slower ships an update every 12 months, Jazz Improv Practice & Scales every 2 months. The most recent releases landed on October 30, 2026 and November 4, 2026 respectively.
| Parameter | Loop Slower | Jazz Improv Practice & Scales |
|---|---|---|
| Price | $0.99 | Free — better |
| Update frequency | Every 12 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.1 | 17.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 4 MB |
| Age rating | 9+ | 4+ |
| Developer | Algirdas Gridziuska | Linh Phan Nhat Khanh |
In-app purchases
Loop Slower
No in-app purchases
Jazz Improv Practice & Scales
- Cadenza Improv Prompts Weekly$2.997 Days
- Cadenza Improv Prompts Yearly$14.991 Year
- Solo Practice Lifetime$29.99
Questions
Is Loop Slower free?
Is Jazz Improv Practice & Scales free?
Do Loop Slower or Jazz Improv Practice & Scales have ads?
Which is updated more often, Loop Slower or Jazz Improv Practice & Scales?
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