Comparison

iJammer vs Stemulator

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

Head to head
About

iJammer

This app uses device motion to create music and sound effects. Simply activate the feature, move your device, and hear sounds play. It offers various settings for balance practice, virtual juggling, and creative jamming.

Highlights
  • Motion-activated audio
  • Soundboard with 90+ sounds
  • Balance and coordination modes
  • Creative music jamming
  • Play while standing or sitting
Features
Read full description

Get your fun fix with iJammer. Tap the “activate” button, put device in pocket, and lift leg to start shredding! When device changes position, sounds/music play. Tap the button again to deactivate. Tap the “cloud” buttons for instant soundboard audio. Lots of ways to use: -Work on your balance skills with the guitar/drums settings. -Virtually juggle a soccer ball with the soccer setting. -Play random sounds with the fx setting. -Play songs with your legs. -Create music and jam along using the activate feature and soundboard together. Features: -90+ professionally recorded sounds -Soundboard -Lift leg(position change) audio -Use standing up or sitting down

About

Stemulator

This app uses advanced audio separation models to extract individual elements from any song with studio-quality precision. It offers modes for producers to download stems and for musicians to play along with real-time mixing and chord mapping.

Highlights
  • Extract up to 18 stems per track
  • Producers Mode for stem downloads
  • Musicians Mode for real-time mixing
  • Generate MIDI chord maps
  • Real-time chord mapping and waterfall MIDI piano
  • Supports major audio formats for import and export
Features
Read full description

Stemulator is the ultimate stem separation app for producers, musicians, DJs, and audio enthusiasts. Using advanced audio separation models, Stemulator extracts individual elements from any song with studio-quality precision. SEPARATE UP TO 18 STEMS PER TRACK • Vocals: Lead Vocal, Backing Vocal • Rhythm: Drums, Bass, Drumless • Drums: Kick, Snare, Hi-Hat, Toms, Cymbals • Instruments: Piano, Guitar, Strings, Keys/Synths, Winds, Ensemble • Full Mix: Instrumental • MIDI Chord Map TWO POWERFUL MODES Producers Mode — Download every stem for your projects: • Download separated stems in WAV, AIFF, or MP3 • Separate drums into Kick, Snare, Hi-Hat, Toms & Cymbals • Isolate instruments: Piano, Guitar, Strings, Keys/Synths, Winds • Separate vocals into Lead & Backing • Generate MIDI chord maps from any track Musicians Mode — A full DAW-style mixer for playing along: • Mute, solo & mix individual stems in real time • Adjust key & tempo with studio-quality pitch shifting • Real-time chord mapping & waterfall MIDI piano synced to playback • Real-time tabs for guitar, piano, & bass • Real-time capo recommendations for guitarists • Beat loop — 4, 8, 16, 32 or 64 beats, quantized to the beat grid • Synced metronome with multiple click sounds • Export chord charts as PDF or MIDI files • Export your custom mix as WAV, AIFF, or MP3 REAL-TIME CHORD MAPPING Stemulator analyzes the harmonic progression of your track and maps out every chord change—synced to playback in real time. Follow along as you play, export as a printable PDF chord chart, or download as a MIDI file for your DAW. STUDIO QUALITY OUTPUT Stemulator delivers the most advanced audio separation available — professional-grade stems with unmatched clarity and precision. Whether you're creating remixes, practicing along with isolated instruments, or producing new tracks, you'll get clean, artifact-free stems ready for your workflow. SUPPORTS ALL MAJOR FORMATS Import your music in WAV, AIFF, MP3, FLAC, M4A, or OGG format. Export your separated stems in high-quality WAV, AIFF, or MP3 for maximum flexibility in your DAW or audio editor. PERFECT FOR: • Producers – Sample and remix with clean, separated elements • Musicians – Mix stems, transpose key & tempo, follow chord maps • DJs – Create unique mashups and transitions • Karaoke – Remove vocals from any song instantly • Educators – Isolate specific parts for music lessons • Transcribers – Hear individual instruments clearly FOUR FLEXIBLE PLANS Free: Try Stemulator with 3 free stem separations Professional: 10 Stemulations per month, 5-stem separation Studio: Unlimited Stemulations, studio quality, 6-stem separation + Drumless, chord map generation & PDF export Audiophile: Full access to all 18 stems including individual drum separation, vocal separation, instrument isolation, MIDI chord export & real-time chord mapping HOW IT WORKS 1. Upload any song from your library 2. Choose Musicians or Producers mode 3. Stemulate your audio 4. Mix, play along, or download your stems Whether you're isolating a guitar solo to learn, removing vocals for karaoke night, transposing a song to your key, or extracting drums for your next production, Stemulator makes professional stem separation accessible to everyone. Download Stemulator today and unlock the individual elements hidden in your favorite music. Terms of Use: https://stemulator.app/terms.html

Screenshots

iJammer4 screens
Stemulator4 screens

Verdict

The call

The clearest difference is in-app purchases: iJammer at none against Stemulator's 8. iJammer also leads on rating (5.0 vs 4.7). Stemulator's advantage is ads (none vs shown) and update cadence (every 9 days vs every 78 months). On price, ratings volume, device support and iOS requirement 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. Stemulator sells 8 in-app purchases, starting at $4.99 per month. iJammer asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

iJammer holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 9 and 14 respectively.

UpkeepUpdate frequency

iJammer ships an update every 78 months, Stemulator every 9 days. The most recent releases landed on October 2, 2026 and October 17, 2026 respectively.

Scorecard5 real differences · 5 level
iJammer versus Stemulator: the parameters behind the verdict, then further details
ParameteriJammerStemulator
PriceFreeFree
Rating5.0 (9 ratings) — better4.7 (14 ratings)
Positive reviews—94.4% of reviews
Number of ratings914 — better
Update frequencyEvery 78 monthsEvery 9 days — better
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS15.615.0 — better
Further details — not scored
Size13 MB60 MB
Age rating4+4+
DeveloperCallaloo Records LLCStemulator LLC

Customer experience

iJammer

All ratings9 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Stemulator

All ratings14 ratings
Positive92.9%
Neutral0.0%
Negative7.1%
Written reviews18 reviews
Positive94.4%
Neutral0.0%
Negative5.6%

In-app purchases

None

iJammer

No in-app purchases

8 purchases

Stemulator

Subscriptions8
  • Professional$4.991 Month
  • Studio$9.991 Month
  • Audiophile$19.991 Month
Show 5 more
  • Production$29.991 Month
  • Professional (Annual)$39.001 Year
  • Studio (Annual)$79.001 Year
  • Audiophile (Annual)$149.001 Year
  • Production (Annual)$249.001 Year

Questions

Is iJammer free?
iJammer is free to download, with no in-app purchases.
Is Stemulator free?
Stemulator is free to download, with in-app purchases available.
Which has better reviews, iJammer or Stemulator?
iJammer is rated higher. iJammer averages 5.0 out of 5 from 9 ratings, while Stemulator averages 4.7 from 14 ratings.
Do iJammer or Stemulator have ads?
iJammer shows ads; Stemulator does not.
Which is updated more often, iJammer or Stemulator?
iJammer ships an update every 78 months, and Stemulator every 9 days. Most recently, iJammer was updated on October 2, 2026 and Stemulator on October 17, 2026.

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