Comparison

Loop Slower vs TerryTrilla

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

Head to head
About

Loop Slower

Features
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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 whoโ€™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

TerryTrilla

Features
Read full description

TerryTrilla turns any melody into full harmony โ€” instantly. Load a song or write your own melody on the Circle-Keyboard, and TerryTrilla shows you exactly what to play, bar by bar. It is a chord finder, song key finder, melody harmonizer, chord progression generator, bass line generator and solo guide โ€” all in one, built for songwriters, students, guitarists, pianists, singers and producers. KNOW WHAT TO PLAY โ€” BAR BY BAR - Chords for every bar, with their function (Tonic, Subdominant, Dominant) and scale degree โ€” so you finally understand WHY each chord works - Song key and scale detection across the whole piece - Bass lines that follow the harmony, note by note - Demo solo ideas over each chord, with the scale they come from - Guitar chord shapes mapped on the fretboard, with several ways to grip each chord - Piano chords on the keyboard, in the same view FIND CHORDS FOR ANY SONG Stop hunting through tabs. Load a song and get its chords, key and structure in seconds. See what chords are in the song, how they connect, and how to play them on guitar or piano. FIND THE KEY OF ANY SONG Song key finder and scale detector. Know the key, the mode and the notes you can use โ€” before you jam, practise or write a solo. CREATE โ€” DO NOT JUST COPY Give TerryTrilla a melody and it writes the harmony: - Harmonize melody into a complete chord progression - Reharmonize any section across five worlds โ€” Classical, Jazz, Cinematic, Pop and Neo-Soul - Generate chord progressions bar by bar and hear them straight away - Choose the key and scale family your piece lives in, and keep your notes locked to it while you write - Add lyrics under the melody, syllable by syllable - Play along at your own tempo, with tap tempo and a count-in BRING YOUR OWN MUSIC IN Upload your score and get chords instantly โ€” no blurry photos, no guessing: - Open MusicXML / .mxl files and get chords, key and bass - Export from your notation app as MusicXML and open it here Real notes in, real harmony out. PLAY IN TUNE, PLAY IN TIME - Chromatic tuner with modes for guitar, bass, ukulele, violin, viola, cello, trumpet, saxophone and flute - Alternate guitar tunings: drop D, drop C, DADGAD, open G, open D, half step down, 7- and 8-string - Metronome with time signatures, accents and subdivisions โ€” beats, 8ths, triplets, 16ths LEARN THE LANGUAGE OF MUSIC - See functional harmony and roman-numeral degrees in action - Think in degrees and function, not just chord letters - Follow the score bar by bar while it plays โ€” notation and harmony together - A practical companion for music theory at every grade HOW IT WORKS 1. Load a song file or tap a melody on the Circle-Keyboard 2. TerryTrilla analyses the key, harmony and every bar 3. See chords, bass, solo and guitar shapes โ€” then reharmonize and play along WHO IT IS FOR - Songwriters looking for chords that fit their melody - Guitarists and pianists learning chords, scales and the fretboard - Producers building progressions and bass lines fast - Students and teachers of harmony, music theory and ear training - Anyone who plays by ear and wants to know what is really going on Plus and Pro plans unlock deeper harmony, solo, guitar shapes and reharmonization worlds. SUBSCRIPTIONS Plus and Pro are auto-renewable subscriptions, offered monthly or yearly. Payment is charged to your Apple ID at confirmation of purchase. A subscription renews automatically unless it is cancelled at least 24 hours before the end of the current period. Manage or cancel your subscription in your App Store account settings at any time. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://terrytrilla.com/privacy-policy Whatever song is in your head, TerryTrilla shows you the music behind it โ€” and helps you make it your own.

Screenshots

Loop Slower4 screens
TerryTrilla4 screens

Verdict

The call

The clearest difference is price: TerryTrilla at Free against Loop Slower's $0.99. TerryTrilla also leads on update cadence (every 3 days vs every 12 months) and iOS requirement (15.0 vs 17.1). Loop Slower's advantage is in-app purchases (none vs 7). On ads and device support 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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

TerryTrilla is free to download; Loop Slower costs $0.99 up front. TerryTrilla sells 7 in-app purchases, starting at $14.99 per month. Loop Slower asks for nothing beyond the download.

UpkeepUpdate frequency

Loop Slower ships an update every 12 months, TerryTrilla every 3 days. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

Scorecard4 real differences ยท 2 level
Loop Slower versus TerryTrilla: the parameters behind the verdict, then further details
ParameterLoop SlowerTerryTrilla
Price$0.99Free โ€” better
Update frequencyEvery 12 monthsEvery 3 days โ€” better
AdsNoNo
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPadiPhone, iPad, iPod โ€” better
Requires iOS17.115.0 โ€” better
Further details โ€” not scored
Size5 MB51 MB
Age rating9+4+
DeveloperAlgirdas GridziuskaTerryTrilla LLC

In-app purchases

None

Loop Slower

No in-app purchases

7 purchases

TerryTrilla

Subscriptions4
  • Plus$14.991 Month
  • Pro$24.991 Month
  • Plus$143.991 Year
Show 1 more
  • Pro$219.991 Year
One-time3
  • Starter Credits$4.99
  • Standard Credits$9.99
  • Pro Credits$24.99

Questions

Is Loop Slower free?
Loop Slower costs $0.99, with no in-app purchases.
Is TerryTrilla free?
TerryTrilla is free to download, with in-app purchases available.
Do Loop Slower or TerryTrilla have ads?
Neither Loop Slower nor TerryTrilla shows ads.
Which is updated more often, Loop Slower or TerryTrilla?
Loop Slower ships an update every 12 months, and TerryTrilla every 3 days. Most recently, Loop Slower was updated on October 30, 2026 and TerryTrilla on October 25, 2026.

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