samplerSequencer vs Fettkraft
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
samplerSequencer
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"samplerSequencer" turns your device into a sampler sequencer for professional musicians and composers. Just record a single sound / voice / special effect "A note" using the samplerSequencer audio recording feature (using the internal microphone of the device) or import the sound into the device through synchronization (using the iTunes software for Mac or PC) or with copy / paste using the technology "iTunes File Sharing" and samplerSequencer will create for you the whole scale of sounds and assign them to the virtual keyboard (n octaves) of samplerSequencer, so you can record an audio track using the sequencer recording feature of samplerSequencer (the sequencer records for you every note played by you). samplerSequencer operates with seven independent sound tracks, each with its own sampled sound (assignable to a track). You can then record a track at a time (using the virtual keyboard or by writing different notes by hand) and then listen all the tracks together using the sequencer play feature. The sampleSequencer "all tracks view" and "selected track view", the ability to manually enter a note or put it through the virtual keyboard, the ability to delete unwanted notes, to touch a note and change its position, length and the type of the note (note shift), the ability of including sequencer events such as pitch bending and many other features make samplerSequencer a professional sequencer like the most popular sequencers for Mac or PC. The software is able to read the common audio files (WAV, MP3, CAF, etc...) so you can create your own sound (you only need one audio file) using standard wave editor for Mac or PC and samplerSequencer will create automatically for you the musical instrument. You can also import a song from the iTunes library on the device and by controlling "SAMPLE START POSITION" you can select a sound by extracting it from the imported song: samplerSequencer will automatically create the complete musical instrument for you. You can import a song from iTunes and assign it to a track, and using the other tracks you can play your track over the imported song… the sequencer will play the song combined with your sound tracks. With samplerSequencer you will have in your pocket the smallest existing sampler and sequencer! Features: - Import any sound and samplerSequencer generates for you the entire scale of sounds (n octaves) - Storing infinite sound samples using the archive of sound ("Samples Archive") of samplerSequencer - Virtual Keyboard - Control for increase / decrease the keyboard octave (usable in real time) - "Bending control" to change the sound in real time - "Sample Start Position" control: you can remove the initial part of a sample (ex. silence) by specifying the start time position of the sample (CUT FEATURE) - "Sustain Pedal" control - Multi keyboard voices (64 entries) - Default "GRAND PIANO" sample - Ability of “recording” of musical patterns during live performances - sequencer with 7 independent tracks (you can assign to each track a different sampled sound) - MUTE function to turn off unwanted tracks (PLAY MUTE feature) - Independent VOLUME for each track (SEQUENCER MIXER) - View "all-track view ": it will display all the tracks simultaneously - View "PIANO ROLL": it will display the notes for the selected track - Function touch a note and change its parameters of position, duration, and type of the note - Function touch / drag to remove one or more notes - Function touch / drag to remove unwanted events (pitch bending, etc...) - Metronome - Beat control for the sequencer (it can be disabled) - "samplerSequencer internal archive" to store all the user-sampled sounds (infinite sound presets) - Infinite number of projects can be saved in the "projects archive" of samplerSequencer - NOTE QUANTIZATION for selected track - SEQUENCER PLAY LOOP from start position (PLAY FROM) to end position (PLAY TO) - EDIT WINDOW FOR EVENTS
Fettkraft
This audio effect plugin is designed to enhance percussion sounds with zero latency. It adds punch and energy to beats without raising RMS levels, offering powerful dispersion for low and mid-range frequencies. Optimized for versatility across genres, it avoids harsh artifacts found in other algorithms.
- Zero-latency dispersion effect
- Enhances percussion punch and energy
- Powerful low and mid-range dispersion
- Near-ideal phase shifting
- Pristine transients
- Avoids harsh 'zappy' qualities
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Fettkraft spreads out low and lower-midrange harmonics in time. It is designed specifically for sources with pronounced transients, such as percussive, plucked, or rapidly decaying sounds. Powered by an ultra-strong dispersion modeling algorithm, Fettkraft delivers high levels of acoustic dispersion in a single, efficient instance – completely eliminating the need to stack multiple plugins or wrestle with the messy side effects typical of stacked all-pass filter-based dispersers. Acoustic dispersion can transform your tracks in several ways: • Novel Harmonic Interaction: Feed time-separated harmonics into saturation or heavy dynamics processors to uncover entirely new acoustic textures • Perceptual Low-End Depth: Get more powerful "oomphs" without boosting frequencies or increasing loudness. Fettkraft makes your low end feel deeper, thicker, and more sustained • Headroom Recovery: Unstack overlapping transient energy to lower instantaneous peak levels. Depending on your source material's phase composition, this can free up valuable headroom FEATURES: • Powerful dispersion for the low end and lower midrange • Near-ideal phase shifting with a flat frequency response • Completely transparent mid and high frequencies • Preserves RMS / loudness (± 0.1 dB) • Delivers pristine transients and has zero latency – a massive advantage over spectral delays • Despite its strength, it remains free of the rhythm disruptions that typically arise from extreme sub-bass phase delays inherent to traditional low-latency dispersers • Tuned to avoid the "raygun" effect found in other dispersion algorithms, to ensure versatility across diverse sounds and genres TECHNICAL NOTES: • Bass portamento / pitch bend effects are not recommended when using this plugin; uninterrupted bent notes crossing operational frequency boundaries can cause phantom beats • The efficacy of headroom recovery depends on the source material. E.g. some synthetic inputs or optimized / pre-processed ones may even experience peak level increases (while RMS is preserved) PLEASE NOTE: • An AUv3-compatible host is required to use this app • Supported sampling rates: 44.1, 48, 96 kHz
Screenshots
Verdict
The clearest difference is price: samplerSequencer at $1.99 against Fettkraft's $5.99. Fettkraft's advantage is iOS requirement (16.6 vs 18.0). On update cadence, ads, 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
samplerSequencer costs $1.99 and Fettkraft $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.
samplerSequencer ships an update every 11 months, Fettkraft every 9 months. The most recent releases landed on October 16, 2026 and October 14, 2026 respectively.
| Parameter | samplerSequencer | Fettkraft |
|---|---|---|
| Price | $1.99 — better | $5.99 |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | Every 11 months | Every 9 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Paid |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 18.0 | 16.6 — better |
| Further details — not scored | ||
| Size | 3 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Gianluca Natalini | quantovox |
In-app purchases
samplerSequencer
No in-app purchases
Fettkraft
No in-app purchases
Questions
Is samplerSequencer free?
Is Fettkraft free?
Do samplerSequencer or Fettkraft have ads?
Which is updated more often, samplerSequencer or Fettkraft?
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