Comparison

Kalimo vs Bent Spool

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

Head to head
About

Kalimo

Read full description

Kalimo brings score import, kalimba practice, on-screen performance, and music creation together on iPhone and iPad. Arrange your scores for a standard 17-key C kalimba and practice with falling notes. With Kalimo Studio, layer parts, record performances, edit notes, and mix them into a song. ■ From score to kalimba • Import MusicXML, MXL, XML, and supported MIDI files • Arrange for a standard 17-key C kalimba • Choose a solo arrangement or Studio Ensemble • Listen to automatic playback to explore melodies and harmonies • Try the built-in demo without preparing a score ■ Practice at your own pace • Follow falling notes to see where and when to play • Adjust playback speed and look-ahead • Repeat passages with A/B or current-measure loops • Match notes with the on-screen keys or MIDI input • Choose a metronome, number or pitch-name labels, and note colors ■ Play and edit on screen • Perform freely on a multi-touch kalimba • Tap to add notes and drag them in the kalimba roll • Adjust note length, velocity, and thumb assignments • Use glissandos, selection, copy, and undo • Edit tempo, meter, and key signatures • Play with four included sounds: piano, synth, GM kalimba, and Hanamoto kalimba ■ Build songs with Kalimo Studio • Create and edit up to eight kalimba parts • Record with the touch keys or a MIDI keyboard while listening to other parts • Adjust each part’s level, pan, tone, and reverb • Use mute and solo to hear how the parts work together • Explore 30 additional instruments, including strings, winds, percussion, and kalimbas • Export MusicXML, MXL, WAV, M4A, and individual audio stems ■ Organize and export • Search, sort, and organize songs in collections • Edit song titles and composers • Export the source-file copy retained at import • Save edited notes as MIDI files ■ Free features and subscriptions Free includes four instruments, single-part playback, performance and editing, three saved workspaces, original-score export, and MIDI export. Kalimo Studio is an auto-renewing monthly or annual subscription. It adds multipart creation, editing, recording and mixing, additional instruments, advanced score and audio exports, and removes the three-workspace limit. Device storage and supported song-size limits still apply. The annual plan offers a seven-day free trial for eligible users. Check pricing, eligibility, and renewal terms before purchase. Saved songs are not automatically deleted when a subscription ends. Existing Studio songs remain available for viewing, playback, and MIDI export. Playback requires that the instruments used by the song remain intact on your device. ■ Data and privacy Your source scores, arrangements, recordings, library, and preferences stay on your device and are not sent to a developer server. There is no app account, advertising, or tracking. Purchase verification and additional-instrument downloads communicate with Apple and the delivery service. See the Privacy Policy for connection information and delivery diagnostics. Kalimo does not provide its own cloud synchronization between devices. ■ Before you begin Requires iOS or iPadOS 18 or later. iPhone uses landscape orientation. iPad is optimized for landscape and also supports portrait and window resizing. MIDI import supports SMF Type 0/1 with PPQ timing. Transposition, octave changes, or reduced chords and accompaniment may be needed to fit the kalimba. Difficulty varies with the score, tempo, and performer. Recording captures the touch keys or MIDI input. It does not record ambient sound or judge a physical kalimba through the microphone. Use scores and exported works only with the necessary rights or permission. Terms of Use: https://apps.qursor-dev.com/app/6801140737/terms Privacy Policy: https://apps.qursor-dev.com/app/6801140737/privacy-policy

About

Bent Spool

This music app offers creative audio effects for live performance or use within other music apps. Explore rhythmic tremolo, pitched repeats, and looping fragments of your audio. It includes built-in overdrive and tape effects for unique sound shaping.

Highlights
  • Rhythmic tremolo effects
  • Pitched repeat sequences
  • Overlapping audio loops
  • Built-in overdrive and fuzz
  • Vintage tape effects
  • Standalone and AUv3 host support
Features
Read full description

Bent Spool is a creative effect that can transform simple musical parts into unexpected rhythms and melodies, played live or as an effect in your favorite host app. Shape a tremolo pulse, turn a note into a run of pitched repeats, or build a moving layer from fragments of what you just played. Drive the input with built-in overdrive or fuzz, add a core effect, then finally layer in vintage analog tape effects. THREE MODES TREM: a pulsing volume effect, from a rounded sine through triangle and sawtooth to a hard square gate. Syncs to your host's tempo or runs free. REPEAT: up to 64 pitched copies with their own decay and feedback, across five pitch stations from two octaves down to two octaves up. LOOPS: up to six overlapping fragments of your recent audio, spread across pitch, direction, read position and the stereo field. CHARACTER CHAOS adds movement that suits each mode: octave jumps in REPEAT, held or stalled pulses in TREM, wandering reversals and pitch drift in LOOPS. WEAR adds tape wear, magnetic saturation and digital crush after the active mode. At the input, OD is a softer clip; FUZZ is a harder distortion that sputters as it decays. PRESETS 48 factory presets: 10 TREM, 15 REPEAT, 15 LOOPS and an 8-preset Fuzz Tremolo pack. Unlock to save your own. FREE TO TRY TREM plays in full on the OD voice with ten presets. No time limit, no interruptions. A single $9.99 in-app purchase unlocks REPEAT, LOOPS, FUZZ, the rest of the presets and preset saving. No subscription. Runs as a standalone app or as an AUv3 effect in AUM, Loopy Pro and other AUv3 hosts, on iPhone and iPad.

Screenshots

Kalimo4 screens
Bent Spool4 screens

Verdict

The call

Kalimo and Bent Spool are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Both are free to download. Kalimo sells 2 in-app purchases, starting at $5.99 per month and Bent Spool sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
Kalimo versus Bent Spool: the parameters behind the verdict, then further details
ParameterKalimoBent Spool
PriceFreeFree
Rating—5.0 (5 ratings) — better
Number of ratings—5 — better
Update frequency—Daily
AdsNoNo
In-app purchasesYesYes
Monetization—Free with in-app purchases
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.017.0 — better
Further details — not scored
Size56 MB23 MB
Age rating4+4+
DeveloperRenzo OhhamaPlastic Factory LLC

In-app purchases

2 purchases

Kalimo

Subscriptions2
  • Monthly Plan$5.991 Month
  • Annual Plan7 Days trial$49.991 Year
1 purchases

Bent Spool

One-time1
  • Bent Spool Unlock$9.99

Questions

Is Kalimo free?
Kalimo is free to download, with in-app purchases available.
Is Bent Spool free?
Bent Spool is free to download, with in-app purchases available.
Do Kalimo or Bent Spool have ads?
Neither Kalimo nor Bent Spool shows ads.

Other comparisons