Comparison

4' 33" 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

4' 33"

Experience and share a unique musical performance. Explore over 2,500 existing renditions of a conceptual piece. This app allows you to create and contribute your own silent performance.

Highlights
  • Create performances
  • Share performances
  • Listen to existing performances
  • Explore 2,500+ renditions
Features
Read full description

Create a performance of John Cage's 4' 33" and share the results with the world. Listen to the more than 2,500 performances that have already been created.

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

4' 33"2 screens
Koala Sampler4 screens

Verdict

The call

The clearest difference is in-app purchases: 4' 33" at none against Koala Sampler's 8. 4' 33" also leads on price ($0.99 vs $4.99) and iOS requirement (9.0 vs 15.0). Koala Sampler's advantage is update cadence (fortnightly vs every 11 months) and ratings volume (1.5K vs 13). On ads 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

4' 33" costs $0.99 and Koala Sampler $4.99 up front. Koala Sampler sells 8 one-off in-app purchases. 4' 33" asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Koala Sampler holds the better App Store score, 4.8 against 4.5. That said, the two scores are not equally well evidenced: Koala Sampler has 1.5K ratings behind it against 13, so its average is the more settled of the two. Written reviews point the same way: 64% of 4' 33"'s written reviews are positive against 88% of Koala Sampler's.

UpkeepUpdate frequency

4' 33" ships an update every 11 months, Koala Sampler fortnightly. The most recent releases landed on October 21, 2026 and October 23, 2026 respectively.

Scorecard9 real differences · 2 level
4' 33" versus Koala Sampler: the parameters behind the verdict, then further details
Parameter4' 33"Koala Sampler
Price$0.99 — better$4.99
Rating4.5 (13 ratings)4.8 (1.5K ratings) — better
Positive reviews64.3% of reviews88.3% of reviews — better
Number of ratings131.5K — better
Update frequencyEvery 11 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
Best chart rank—#7 — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.0 — better15.0
Further details — not scored
Size70 MB60 MB
Age rating4+4+
DeveloperLarson AssociatesMazbox Limited

Customer experience

4' 33"

All ratings13 ratings
Positive84.6%
Neutral0.0%
Negative15.4%
Written reviews28 reviews
Positive64.3%
Neutral3.6%
Negative32.1%

Koala Sampler

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

Bugs and requests

4' 33"

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

4' 33"

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 4' 33" free?
4' 33" costs $0.99, with no in-app purchases.
Is Koala Sampler free?
Koala Sampler costs $4.99, and also offers in-app purchases.
Which has better reviews, 4' 33" or Koala Sampler?
Koala Sampler is rated higher. 4' 33" averages 4.5 out of 5 from 13 ratings, while Koala Sampler averages 4.8 from 1.5K ratings.
Do 4' 33" or Koala Sampler have ads?
Neither 4' 33" nor Koala Sampler shows ads.
Which is updated more often, 4' 33" or Koala Sampler?
4' 33" ships an update every 11 months, and Koala Sampler fortnightly. Most recently, 4' 33" was updated on October 21, 2026 and Koala Sampler on October 23, 2026.

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