Comparison

MetroGnome Pro vs Koala Sampler

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

Head to head
About

MetroGnome Pro

This app transforms music practice for children into an engaging experience with a friendly animated character and visual cues. It offers professional-grade accuracy with adjustable tempos and customizable beats, making rhythm practice fun and effective for young musicians.

Highlights
  • Animated gnome and dancing bees for visual engagement
  • Adjustable tempo with traditional Italian markings
  • Customizable beats per minute and measures
  • Visual, silent, and full practice modes
  • Crystal-clear sound with measure bell
  • Distraction-free interface with one-tap controls
Features
Read full description

Is Music Practice Becoming a Daily Battle? Every parent knows the struggle: your child sits down to practice, loses the rhythm, gets frustrated, and suddenly "just 10 more minutes" feels impossible. Traditional metronomes are boring, intimidating mechanical devices that make practice feel like punishment rather than play. There's a better way! Meet MetroGnome: Where Rhythm Meets Imagination MetroGnome isn't just another metronome app—it's your child's new practice companion. With our friendly animated gnome and dancing bees, we've transformed the world's most essential music tool into an engaging, visual experience that children actually want to use. Watch the magic happen: * Our charming gnome moves perfectly in time with every beat * Playful bees land on his nose with each measure, making bars visible and fun * Visual + audio learning keeps kids focused and engaged * Professional-grade accuracy meets kid-friendly design Why Music Teachers & Parents Choose MetroGnome: Proven Results "Since using MetroGnome in our music school, children actually ask to practice with it!" — Music School Director, Germany Complete Control * Adjustable tempo from Largo to Presto (traditional Italian markings included) * Customize beats per minute and measures * Perfect for piano, guitar, violin, drums, and all instruments Smart Design for Young Learners * Visual mode: Gnome closes his eyes—perfect for developing internal rhythm * Silent mode: Gnome covers his ears—great for quiet practice or rhythm reading * Full mode: Combines sight and sound for maximum learning Crystal-Clear Sound Quality Each beat delivers professional-grade audio with a distinctive measure bell that cuts through any instrument—loud enough to hear over piano or drums! Universal Compatibility Works seamlessly on Mac, iPhone, and iPad. Start practice on Mac, continue on iPad—your settings sync automatically. Join 50,000+ Happy Musical Families  * "It's loud enough that I can hear it over the piano. Easy to use too." — Bonk222, USA  * "It's interesting and creative. Love it!" — smithchloe, UK  * "All children love MetroGnome!" — Music School, Germany  * "很好用" (Very useful!) — China Everything You Need, Nothing You Don't: Traditional Tempo Names * Largo, Adagio, Andante, Moderato, Allegro, Presto * Learn proper musical terminology while practicing Distraction-Free Interface * One-tap controls your child can master instantly * No complicated menus or settings to overwhelm Multi-Device Freedom * Practice at home on Mac * Take lessons with iPhone * Silent practice on iPad Educational Design * Bee counter teaches measure structure * Visual beat indicators develop sight-reading skills * Builds independence and confidence Better practice = Faster progress = More confidence = Lasting love of music.  Ready to Transform Practice Time? Buy it now! And Experience the full magic.

About

Koala Sampler

This app allows you to record sounds with your phone's microphone, transform them with effects, and create beats and tracks. Its intuitive interface focuses on a fast and fun music-making process.

Highlights
  • Record up to 64 samples with mic
  • Apply 16 built-in effects
  • Load and use own samples
  • Create beats with high-resolution sequencer
  • Export loops and tracks as WAV
  • AI sample separation
  • AUv3 and MIDI compatibility
Features
Read full description

Koala is the ultimate pocket-sized sampler. Record anything with your phone's mic or load your own sounds. Use Koala to create beats with those samples, add effects and create a track! Koala's super intuitive interface helps you make a track in a flash - there is no brake pedal. You can also resample the output of the app back into the input, through the effects, so the sonic possibilities are endless. Koala's design focuses totally on making the music-making process instant, keeping you in the flow and keeping it fun, not getting bogged down by pages of parameters and micro-editing. "Been putting that $4 koala sampler to good use lately. Undeniably great tool that puts some of these expensive beat boxes to shame. A must cop." -- flying lotus, twitter * Record up to 64 different samples with your mic * Transform your voice or any other sound with 16 superb built-in fx * Load your own samples * Choose from one of 250 built-in sounds * Resample the output of the app back into a new sample * Export loops or entire tracks as professional quality WAV files * Direct export to Ableton Live Set * Copy/paste or merge sequences just by dragging them * Create beats with the high-resolution sequencer * Import samples from the Files app or even from videos * Keyboard mode lets you play chromatically or one of 9 scales * Quantize, add swing to get the right feel * Normal/One-shot/Loop/Reverse playback of samples * 6 Choke groups * Attack, release and tone adjustable on each sample * Mute/Solo controls and note repeat * Add any (or all) of the 16 effects to the entire mix * AUv3 compatible - use in GarageBand, Logic, Cubasis etc etc * MIDI controllable - play your samples on a keyboard, map the effects to knobs * Jam with others over WiFi with Ableton Link * Free copy of Ableton Live Lite included * AudioShare compatible * Use AI to separate samples into individual instruments (drums, bass, vocals and other) * Set your own background image and choose from a growing list of background visual FX 8 Built-in Microphone FX: * More Bass * More Treble * Fuzz * Robot * Reverb * Octave up * Octave down * Synthesizer 16 Built-in DJ Mix FX: * Bit-crusher * Pitch-shift * Comb filter * Ring modulator * Reverb * Stutter * Gate * Resonant High/Low Pass Filters * Cutter * Reverse * Dub * Tempo Delay * Talkbox * VibroFlange * Dirty * Compressor Features included in SAMURAI In-App Purchase * Pro-quality Timestretch (5 modes: Modern, Retro, Beats, Re-pitch and Cyclic) * Piano roll editor * Auto-chop (auto, equal, and lazy chop) * 3 Band EQ * Pocket operator sync out * Quokka Synth - powerhouse polyphonic synthesizer * MIDI Out - control external MIDI hardware with Koala's sequencer * Chopper - multimodal sample chopping instrument Features included in MIXER In-App Purchase * Mix your beats professionally with a 4 channel mixer + main bus * Route any sample to any channel * Mute/solo, faders and accurate metering on every channel * 5 effect slots per channel * 29 high-quality effects - compressors, filters, phasers and more, with new effects to come * Host AUv3 plugins - both audio effects and instruments

Screenshots

MetroGnome Pro4 screens
Koala Sampler4 screens

Verdict

The call

The clearest difference is review sentiment: Koala Sampler at 88% against MetroGnome Pro's 33%. Koala Sampler also leads on chart position (#6 vs unranked). MetroGnome Pro's advantage is in-app purchases (none vs 8) and price ($0.99 vs $4.99). On ads, 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

MetroGnome Pro costs $0.99 and Koala Sampler $4.99 up front. Koala Sampler sells 8 one-off in-app purchases. MetroGnome Pro asks for nothing beyond the download.

Scorecard5 real differences · 6 level
MetroGnome Pro versus Koala Sampler: the parameters behind the verdict, then further details
ParameterMetroGnome ProKoala Sampler
Price$0.99 — better$4.99
Rating—4.8 (1.4K ratings) — better
Positive reviews33.3% of reviews88.3% of reviews — better
Number of ratings—1.4K — better
Update frequency—Fortnightly
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
Best chart rank—#6 — better
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size41 MB60 MB
Age rating4+4+
DeveloperMax SchleeMazbox Limited

Customer experience

MetroGnome Pro

Written reviews3 reviews
Positive33.3%
Neutral33.3%
Negative33.3%

Koala Sampler

All ratings1,438 ratings
Positive93.8%
Neutral2.0%
Negative4.2%
Written reviews618 reviews
Positive88.3%
Neutral4.2%
Negative7.4%

Bugs and requests

MetroGnome Pro

Not enough reviews yet to summarise bugs or requests.

Koala Sampler

Reported bugs

3 issues
  • Samples not loading or disappearing after app updates
  • Sequencer timing and quantization issues
  • Crashes when using certain features or with large projects

Requested features

5 requests
  • Ability to record and edit MIDI sequences
  • More comprehensive effects and sound processing tools
  • Improved sample management and organization features
  • Support for external MIDI controllers and hardware integration
  • Customizable color schemes and UI themes

In-app purchases

None

MetroGnome Pro

No in-app purchases

8 purchases

Koala Sampler

One-time8
  • Koala AUv3 Plugin$1.99
  • Ese-O's Sample Pack$2.99
  • Solar Studies Samplepack$2.99
Show 5 more
  • Soon Come Dub Sample Pack$2.99
  • Analog Astronaut Samplepack$2.99
  • Cirrus Cuts Sample Pack$2.99
  • Samurai Edition$3.99
  • Mixer$4.99

Questions

Is MetroGnome Pro free?
MetroGnome Pro costs $0.99, with no in-app purchases.
Is Koala Sampler free?
Koala Sampler costs $4.99, and also offers in-app purchases.
Do MetroGnome Pro or Koala Sampler have ads?
Neither MetroGnome Pro nor Koala Sampler shows ads.

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