Comparison

Laser Harp vs spool.

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

Head to head
About

Laser Harp

Features
Read full description

Turn your screen into a stage of living light. Laser Harp is a touch instrument you actually play - drag your fingers across glowing laser beams and music pours out. In Scale Mode there are no wrong notes. Pick a key, choose a sound, and every swipe sounds intentional. Beginners make beautiful music in seconds; players go deep with real expression. PLAY THE LIGHT • Drag, tap and glide across volumetric laser beams • Scale, Chord, Arpeggio, Split and Dual-Layer play modes • Per-finger expression; pitch bend, vibrato, brightness and volume follow how you move • 13 scales, including Middle-Eastern makam A REAL SOUND ENGINE • 50+ handcrafted instruments: leads, pads, plucks, bells, basses, FX and more • Low-latency synthesis; supersaw, FM, wavetable, filters, reverb, delay, chorus • Stack two instruments, or split bass and lead across the stage BUILT-IN RHYTHM • Analog drum machine with hundreds of grooves • 50+ ready-to-play drum performances across every genre • Lock your tempo and jam RECORD THE SHOW • Record a performance; replay re-stages both the sound AND the light • Export your take as audio and share it A STAGE THAT TRANSFORMS • Themes shift color, fog, glow and sound together • Tune the laser rig: beam count, fan perspective, thickness, glow and haze COMFORT & ACCESSIBILITY • Reduced Flash and a strobe-safety limit for photosensitive players • High contrast, color-blind-safe palette, night-soft mode, larger controls, left-handed layout LASER HARP PRO Unlock everything with a single one-time purchase: remove ads and open every theme, sound and creator tool; yours forever, no subscription. Touch the light. Make it sing.

About

spool.

Create full songs on your phone with this pocket music studio. It offers a variety of sound engines, sampling capabilities, step sequencing, and a 4-track tape recorder for recording and mixing your music. Effects and MIDI controller support enhance the creative process.

Highlights
  • Multiple sound engines
  • Sampling and sequencing
  • 4-track tape recording
  • Extensive effects rack
  • MIDI controller support
  • Step sequencer
Features
Read full description

Make a whole song on your phone. Spool is a pocket music studio inspired by the joy of hardware grooveboxes — play, sample, sequence, and record to tape, all in one playful instrument. Fourteen sound engines. From punchy FM and fat subtractive Pulse to shimmering Cluster, plucked String, granular Cloud, the TALK vocoder, the WIDE stereo engine, THUMP bass, a Sampler, and two drum machines — each with its own animated, touchable visualizer and four hands-on controls. Sample anything. Record straight from the mic into the sampler or drum kits, trim it, and play it across the keyboard. Drums & beats. Build kits, chop a sample into a playable kit, and lock in grooves with the step sequencer. Playful sequencers. Pattern and arpeggiator to start; unlock Stream, Taps, and the bouncing-ball Gumball machine for happy accidents. Six minutes of 4-track tape. Record, overdub, varispeed (including reverse), scrub, and bounce your jam to a finished mixdown — export to WAV. Your tape is saved with your project. Effects & mixer. A deep rack — delay, spring reverb, drive, compressor, chorus, multimode filter, phaser, tremolo/auto-pan, beat-repeat stutter, and a pitch-shifter/harmonizer — many tempo-syncable. Plus a master EQ and brickwall limiter so it always sounds finished. Plays with your gear. Connect a USB or Bluetooth MIDI controller and play Spool like hardware. AUv3 plugin support is planned for a future update. Free to download and make music with a starter set of engines and sequencers. A single one-time Spool Pro purchase unlocks the full instrument — all engines, sampling, every effect and sequencer, unlimited projects, export, and MIDI. No subscription. Spool is an original, independent work by a solo developer — affiliated with no hardware maker.

Screenshots

Laser Harp4 screens
spool.4 screens

Verdict

The call

The clearest difference is ads: spool. at none against Laser Harp's shown. Laser Harp's advantage is iOS requirement (15.0 vs 17.0). On price, 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

Both are free to download. Laser Harp sells 1 one-off in-app purchase and spool. sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Scorecard2 real differences · 8 level
Laser Harp versus spool.: the parameters behind the verdict, then further details
ParameterLaser Harpspool.
PriceFreeFree
Rating—5.0 (7 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—7 — better
Update frequencyEvery 2 months—
AdsYesNo — better
In-app purchasesYesYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size48 MB2 MB
Age rating12+4+
DeveloperAlper KahrimanKristopher Yang

In-app purchases

1 purchases

Laser Harp

One-time1
  • Laser Harp Lifetime$9.99
1 purchases

spool.

One-time1
  • Spool Pro$9.99

Questions

Is Laser Harp free?
Laser Harp is free to download, with in-app purchases available.
Is spool. free?
spool. is free to download, with in-app purchases available.
Do Laser Harp or spool. have ads?
Laser Harp shows ads; spool. does not.

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