Harmonizer vs LoopDeLoop
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Harmonizer
This app helps infants develop perfect pitch by playing Shepard tones, aiding in pitch identity development. It also facilitates the study of chord relationships and displays the pitch of your singing.
- Shepard tone playback
- Pitch identity development
- Chord relationship study
- Vocal pitch display
- Infant music education
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See and hear how music fits together. Harmonizer turns musical relationships into a colorful, interactive grid. Tap a hexagon to hear a note, or tap the triangle between three notes to play a major or minor chord. Sing or play a single note on an instrument, and watch the detected pitch light up. EXPLORE NOTES AND CHORDS Discover how neighboring notes connect through perfect fifths, major thirds, and minor thirds. Major and minor chords form triangles, making harmony something you can see, hear, and explore with your fingers. SEE YOUR VOICE Use the microphone to highlight the pitch you sing or play. Listen to a note, try matching it with your voice, and explore the connection between sound and color. CHOOSE YOUR LABELS Show note names or Movable Do syllables, with your choice of tonic. Keep labels visible, show them only when notes are active, or hide them to focus on the colors and sounds. EXPLORE YOUR WAY Choose from playing, pitch detection, or a mode that listens when you stop playing. Adjust the grid size to suit your screen and how you like to interact. HEAR HARMONY DIFFERENTLY Harmonizer uses Shepard tones—layered sounds that emphasize a note’s identity without a distinct octave. Every hexagon with the same note name produces the same sound. For curious beginners, students, teachers, and musicians, Harmonizer offers a hands-on way to explore pitch, chords, and musical patterns. No music theory knowledge is needed to start: touch a note and listen. Pitch detection requires microphone access.
LoopDeLoop
Record and play back musical parts to practice with a band or orchestra. Create multi-instrument songs by layering up to 8 loops per tune. Ideal for musicians to improve rhythm and timing.
- Record and play musical parts
- Layer up to 8 loops per song
- Practice with synchronized playback
- Large record/play/stop button
- Stereo/mono recording
- Adjustable loop synchronization
- Multilingual support
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Record your music and play along to it like a Looper Pedal. The LoopDeLoop recording looper let you record musical parts and then play them repeatedly on a loop that you can play along live too. Enables you to practise playing in a band, or with an orchestra, in a synchronised way. Perfect for sample; practising your guitar (or any other instrument or singing). You put on a simple base line and then play the tune along to it, forcing you to keep up with the rhythm, eliminating the fretting grip pauses, and training you in playing along with others. For the more experienced player it creates the effect of a whole board of Guitar Pedal Loopers, letting you play like a whole band. Will let you record up to 8 different loops for each song/tune (2 in free). And as many songs as you like (10 in free). Each loop can be as long as you like (depending on the free storage space of your device), sample a full verse, making it into a Mini Daw with a recording made up of up to 8 different instruments/voices or a combination. Large record/play/stop button so you can hit it quickly while playing. Takes it's input from default and outputs to default, so if you plug in a mic or headphones, (or a special plug where the mic is your guitar lead and the output goes to the line in on an amp) it will automatically switch to those, just like your phone normally does when you plug in your headset. You can record and rerecord each loop as many times as you like, and create many different songs/tunes with a multitude of loops, so you can store and replay the music at a later time. LoopDeLoop offers stereo/mono recording, selectable SampleRate, Loop naming, loop specific volume control and adjustable loop start synchronisation Recorded files extractable by using a file manager like My Files and accessing: moonc.mobi/loopdeloop (Deleting or editing files may cause LoopDeLoop to error) Extra large record/play button that can be hit in a hurry while playing. Its the next best thing for guitarists to an actual physical footswitch. Multilingual, adjustable to: English, Norwegian, Danish, Swedish, German, French, Italian, Spanish, Portuguese, Dutch, Chinese, Polish, Russian, Japanese, Hindu and Arabic. For more info this or our other apps, please visit our website: http://www.moonc.mobi email: info@moonc.mobi -- All iPhone/iPad Apps by MoonC.mobi: ChatS - encrypted messenger for secure communication via self created keys - FREE LoopDeLoop - Audio Recording stereo multi Looper w/play synchronisation - FREE WannaPubCrawl – ultimate party/event organizer/advertiser w/advanced invitation options - FREE MarineChimer w/shift display, chimes every ½ hour like a Ships Bell - FREE MarineAwake - Auto-repeating alarm w/notification options to keep you alert and awake - FREE Boms - Card Game for 2 to 4 friends or random strangers - Addictive - Ranking Tables - FREE -- Unlimited looping time. Unlimited overdubs. Play in a circle. Automatic replay. Instant replaying. Loop of as many minutes as your device can store. Full record, undo, redo and stop functionality. Full jamming functionality so you can jam when your buddies are not available. An affordable looper as small as your phone / mobile / pad / other device. Erase by overwriting with new recording. Free standing so no bypass required. LoopDeLoop needs: Media access for access to microphone and speaker. Disk access to store the data. Network access at startup to check for: version, ad, access to Pro. A looper is the most helpful for beginners of all the guitar effects. Someone you can play along with before you are good enough to play in "public". Plus later create multi guitar effects. And this one can be used both with electric and acoustic guitars.
Screenshots
Verdict
The clearest difference is review sentiment: Harmonizer at 45% against LoopDeLoop's 0%. Harmonizer also leads on rating (4.1 vs 1.0) and in-app purchases (none vs 2). LoopDeLoop's advantage is device support (3 vs 1) and iOS requirement (8.0 vs 17.0). On price, update cadence, ads and monetization model 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
Both are free to download. LoopDeLoop sells 2 one-off in-app purchases. Harmonizer asks for nothing beyond the download.
Harmonizer holds the better App Store score, 4.1 against 1.0. That said, the two scores are not equally well evidenced: Harmonizer has 16 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 45% of Harmonizer's written reviews are positive against 0% of LoopDeLoop's.
Harmonizer ships an update every 33 months, LoopDeLoop every 39 months. The most recent releases landed on October 14, 2026 and October 3, 2026 respectively.
| Parameter | Harmonizer | LoopDeLoop |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (16 ratings) — better | 1.0 (2 ratings) |
| Positive reviews | 45.5% of reviews — better | 0.0% of reviews |
| Number of ratings | 16 — better | 2 |
| Update frequency | Every 33 months — better | Every 39 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | Free |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 8.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Matthew McLaughlin | MoonC.mobi |
Customer experience
Harmonizer
LoopDeLoop
In-app purchases
Harmonizer
No in-app purchases
LoopDeLoop
- MoonC.mobi: LoopDeLoop Pro$3.99
- MoonC.mobi: LoopDeLoop Pro5$3.99









