Comparison

Loop Slower vs ChordDeck

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Loop Slower

Features
Read full description

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.

About

ChordDeck

This app provides jazz chord flashcards for musicians to practice chord recall. It displays chord symbols, tones, formulas, and keyboard highlights, with audio playback. Users can mark difficult cards for later review.

Highlights
  • Practice jazz chord qualities
  • Circle-of-fourths or random root order
  • Continuous or one-pass practice sessions
  • View chord tones, formulas, and keyboard highlights
  • Built-in audio playback
  • Mark and review difficult cards
  • Local storage for settings and marked cards
Features
Read full description

ChordDeck is a compact flashcard app for practicing jazz chord recall. Choose the roots and chord qualities you want to drill, then move through a focused deck one card at a time. Each card starts with a chord symbol so you can recall the answer mentally or on your instrument before revealing the details. Reveal a card to check the chord tones, a short formula, a compact piano keyboard highlight, and built-in audio playback. Mark difficult cards during practice and review them again later from the first screen. ChordDeck is designed for musicians who already know basic chord concepts and want a fast, repeatable way to build fluency. It keeps practice visual and direct instead of turning each session into a lesson page. Features: - Practice common jazz chord qualities across selected roots. - Follow circle-of-fourths root order or use random card order. - Choose one-pass sessions or continuous practice. - Reveal chord tones, formulas, and compact keyboard highlights. - Hear chord tones followed by the full chord. - Mark difficult cards and review them in a focused deck. - Use swipe navigation, previous and next controls, and timed autoplay. - Keep practice settings and marked cards stored locally on your device. ChordDeck is useful for jazz students, pianists, guitarists, bassists, arrangers, and other musicians who want quicker recognition of chord symbols, tones, and formulas.

Screenshots

Loop Slower4 screens
ChordDeck4 screens

Verdict

The call

The clearest difference is update cadence: ChordDeck at weekly against Loop Slower's every 12 months. 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

CostPrice · In-app purchases · Ads · Monetization

Loop Slower costs $0.99 and ChordDeck $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Loop Slower ships an update every 12 months, ChordDeck weekly. The most recent releases landed on October 25, 2026 and October 15, 2026 respectively.

Scorecard1 real difference · 9 level
Loop Slower versus ChordDeck: the parameters behind the verdict, then further details
ParameterLoop SlowerChordDeck
Price$0.99$0.99
Rating—5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 12 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
Monetization—Paid
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.117.0 — better
Further details — not scored
Size5 MB4 MB
Age rating9+4+
DeveloperAlgirdas GridziuskaShinhye Lee

In-app purchases

None

Loop Slower

No in-app purchases

None

ChordDeck

No in-app purchases

Questions

Is Loop Slower free?
Loop Slower costs $0.99, with no in-app purchases.
Is ChordDeck free?
ChordDeck costs $0.99, with no in-app purchases.
Do Loop Slower or ChordDeck have ads?
Neither Loop Slower nor ChordDeck shows ads.
Which is updated more often, Loop Slower or ChordDeck?
Loop Slower ships an update every 12 months, and ChordDeck weekly. Most recently, Loop Slower was updated on October 25, 2026 and ChordDeck on October 15, 2026.

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