Stone Echo vs Pulse16
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Stone Echo
This app creates a unique echo effect with adjustable frequency modulation, inspired by Mayan pyramid acoustics. It offers musical and experimental soundscapes, functioning as a standalone application or an AUV3 plugin.
- Frequency changing echo effect
- Phase modulated frequency
- Standalone app and AUV3 plugin
- Adjustable time, feedback, and level
- UFO mode for experimental sounds
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Echo effect Audio Unit V3 inspired by the mayan pyramids acoustic echo. I come up with a complex phase modulated frequency of the echo so you can change it’s frequency signature. It is kind of changing the material of the reflective surface and I called it “Stone F”. I have made the echo to sound more music friendly to me but there is button called “UFO” and if you press it the effect is more close to the mayan just shifting the frequency backwards (I liked that better). You can also control the feedback of the phase modulation. The effect can work as a stand alone app and as an audio unit AUV3 plug-in. Stone Echo is an effect that is heavy on the CPU Controls: - Time - time offset of the echo - Stone F - frequency response of the echo - Feedback - echo feedback - Level - the volume of the echo - UFO - heavy modulated echo
Pulse16
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Pulse16 is a beat maker and step sequencer for making beats anywhere: a drum machine with 16 pads, a deep 808 bass, a punchy synth and acid lines with 303-style slides. READY TO PLAY • Six built-in grooves – Acid Drive, Peak Time, Neon Nights, Midnight Run, Kit Jam, French Filter: drums, bass line and tempo in one tap • Built-in techno and synthwave drum sounds (kick, clap, gated snare, hats, rim, tom) BUILD A BEAT IN SECONDS • Tap the 4x4 drum pads to switch steps on and off — the playing step lights up as the beat runs • Three drum tracks for samples, a kit, the 808 or a mono synth, plus one synth track • Velocity per step from 5 to 100 % for groove and dynamics • Set each track's length from 1 to 16 steps for polyrhythms • Tempo from 20 to 300 BPM, with tap tempo • Eight patterns A–H: switch live, right on the next bar; copy, paste and clear patterns, copy and shift single tracks • Duplicate a track: its steps repeat and the length doubles – build one beat, then vary it KIT MODE: 16 SOUNDS ON THE PADS • Turn any drum track into a kit: 16 sounds on the pads, like a groovebox • Play the pads live and record them into the pattern with Rec – in time, with erase and undo • Volume, pan, tune, distortion and choke groups per pad • The pads of your MIDI controller play and record the kit too, with their velocity 808 KICK AND BASS • Turn any drum track into an 808: a booming kick or a tuned bass line with a note per step • Shape it with decay, punch, click and drive • Slide per step: the 808 glides into the next note, like a classic acid bass line; the glide knob sets the slide time • Four 808 presets, from Classic Kick and Long 808 to Trap Slide and Distorted MONO SYNTH ON ANY TRACK • Turn any drum track into a second synth: the full synth with all its sounds, one note at a time • Slide per step: notes glide into each other like a TB-303; the glide knob sets the time AUTOMATION • Draw curves right over the pads of the synth track: cutoff, resonance, drive, distortion and reverb change from step to step • Every pattern keeps its own curves YOUR OWN SOUNDS • Load WAV, AIFF, MP3 or FLAC files • Record your own samples with the microphone • Trim each sample right on its waveform and preview it instantly • Tune every sample up or down by two octaves, with fine tuning • Distortion (soft, hard, fuzz, overdrive) and a low-pass or high-pass filter on every sample track and kit pad A BASS SYNTH WITH CHARACTER • Sine, square, saw and triangle waveforms • Low-pass and high-pass filter with resonance and envelope • Attack, decay, sustain and release • Distortion, drive, sub oscillator, unison and reverb • Four LFOs, free or synced to the tempo, one of them can sweep the filter • Nine factory sounds, from Berlin Minimal and Acid 303 to the synthwave Outrun Bass • Arpeggiator: every note becomes an arpeggio – major, minor, sus4, 7th, power or octave chord, up, down, up-down or random, 1/8 to 1/32 triplets, over 1–3 octaves PLAY IT WITH HARDWARE • Connect a USB MIDI controller and assign its knobs, faders and pads with MIDI learn: synth, mixer, tempo, play/stop, tracks, patterns and steps • MIDI clock over USB: follow a drum machine or DAW, or send the clock and start your gear in time SAVE YOUR WORK (ONE-TIME PURCHASE) • Save and load whole projects: patterns, samples, sounds and mixer • Save your own synth and 808 presets • One purchase, no subscription; everything else is free MIX LIKE A PRODUCER • Volume and pan for every track, plus master volume • Sidechain pump on every track: the beat breathes with the kick, like French house • Boost: multiband compression on the master for a louder, denser mix, with low, mid and high • Reverb send for drums, samples and vocals; the synth has its own stereo reverb MADE FOR PHONE AND TABLET • On tablets, sound, mixer and presets stay open next to the pads • Low-latency audio engine No account, no ads, no tracking. Works offline.
Screenshots
Verdict
The clearest difference is price: Pulse16 at Free against Stone Echo's $2.99. Pulse16 also leads on rating (4.0 vs 2.8) and update cadence (every 3 days vs every 38 months). Stone Echo's advantage is in-app purchases (none vs 1) and ratings volume (4 vs 1). 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
Pulse16 is free to download; Stone Echo costs $2.99 up front. Pulse16 sells 1 one-off in-app purchase. Stone Echo asks for nothing beyond the download.
Pulse16 holds the better App Store score, 4.0 against 2.8. Both are backed by a comparable volume of ratings — 4 and 1 respectively.
Stone Echo ships an update every 38 months, Pulse16 every 3 days. The most recent releases landed on November 2, 2026 and November 6, 2026 respectively.
| Parameter | Stone Echo | Pulse16 |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 2.8 (4 ratings) | 4.0 (1 ratings) — better |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 4 — better | 1 |
| Update frequency | Every 38 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 9 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | Aleksandar Mlazev | Navid Anzalichi |
In-app purchases
Stone Echo
No in-app purchases
Pulse16
- Unlock saving$0.29





