Tonic FX vs SampleFit
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Tonic FX
Create custom audio effect chains for your music. This app allows you to build and reorder a variety of effects, from distortion and modulation to time-based and dynamic processors, for use in standalone mode or with compatible music production hosts.
- Customizable effect rack
- Reorderable effect chain
- 24 built-in effects
- Standalone app and AUv3 plugin
- MIDI Learn for hardware control
- Tempo sync for time-based effects
- Preset library
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Thirty-four effects. One tap to add each one — and the order of the chain is yours. Tonic FX is the Tonic effects rack in an app of its own, focused and affordable — an Audio Unit (AU and AUv3) effect in GarageBand, Logic, AUM, Cubasis, Drambo and any host, and a standalone app that processes your microphone or line input. A RACK YOU BUILD — AND REORDER Every effect has its own on/off, grouped by category: add one with a tap, then drag the cards to rearrange the chain. The order is saved with the preset. THIRTY-FOUR EFFECTS • Drive — Overdrive, Distortion (hard, asymmetric and fuzz), Amp Sim with 6 models and cabinet, Wavefolder/Fuzz, Bitcrush, Ring Modulator and Lo-Fi/Vinyl. • Modulation — an 8-mode Chorus (vintage through string ensemble), a Phaser with four voicings, from the gentle 4-stage pedal to a slow 10-stage pad sweep, Flanger, Vibrato, Detune, Pitch Shifter/Harmonizer, Throb (the pulsing vibrato of the sixties) and Frequency Shifter. • Motion — a two-rotor Rotary cabinet, Auto-Pan, Tremolo, a Stereo Widener with a mono maker that keeps the bass centred, a Pedal Wah you can put under an expression pedal, and the Trance Gate, with a draw-your-own-rhythm mode. • Time — a tempo-syncable ping-pong Delay, with Wow and Sat for tape character; a Reverb with nine spaces: room, hall, cathedral, plate, spring, shimmer, cloud, gated and swell — plus Freeze, to hold a chord and play over it; Reverse, which plays back what you just played backwards; and Call & Response, which listens to your phrase and answers in the gap. • Dynamics & EQ — Compressor, Limiter, Noise Gate, De-esser, a musical 5-band EQ and a 12-band graphic EQ, each with eight one-tap starting points you can overwrite with your own. Compressor, gate, de-esser and limiter show how much they are holding, in dB. • Vocal — Voice, a whole vocal channel behind one knob: low cut, gate, de-esser, compressor and sheen, all in the right measure; and the Doubler, which simulates two or four voices singing along. • Filter — an Auto-Wah that breathes with your playing, always first in the chain. BUILT FOR PLAYING Full MIDI Learn maps any hardware knob to any control, including the from–to range for an expression pedal. Tempo sync from your host keeps delay and modulation in time. Colour-coded scenes A–F, a preset library with favourites, and factory presets to get started fast. A tactile "pro hardware" interface, native on iPhone, iPad and Mac. Thanks for playing with RSJB — made by musicians, for musicians! Follow what's new at www.rsjb.com.br
SampleFit
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SampleFit prepares entire PCM sample packs for hardware samplers and professional audio workflows. Select WAV or AIFF files, choose the exact output contract, and receive verified local copies with predictable filenames. Your originals are never modified. EXACT PCM OUTPUT • 44.1 kHz or 48 kHz sample rate • 16-bit or 24-bit depth • Mono or stereo channels • WAV or AIFF container BATCH-FIRST WORKFLOW Convert up to 100 samples in one batch instead of repeating the same settings file by file. SampleFit processes one item at a time to keep memory use predictable. BUILT FOR COMPATIBILITY Use clear sampler-ready presets or create a limited custom profile. Before conversion, SampleFit shows the exact output contract and previews deterministic filenames. PRIVATE BY DESIGN All processing happens on your iPhone or iPad. There is no account, upload, cloud service or tracking. Audio never leaves your device. FOCUSED SCOPE SampleFit supports uncompressed PCM WAV and AIFF files. It does not pretend to be an editor, player or universal codec toolbox. The app focuses on one paid outcome: compatible copies ready to move into your sampler workflow. Try three completed batches for free. Unlock unlimited batches with one lifetime purchase. No subscription.
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Verdict
The clearest difference is price: SampleFit at Free against Tonic FX's $9.99. Tonic FX's advantage is in-app purchases (none vs 1). 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
SampleFit is free to download; Tonic FX costs $9.99 up front. SampleFit sells 1 one-off in-app purchase. Tonic FX asks for nothing beyond the download.
| Parameter | Tonic FX | SampleFit |
|---|---|---|
| Price | $9.99 | Free — better |
| Rating | 5.0 (3 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Weekly | — |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPad, Mac — better | iPhone, iPad |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 9 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Rubens Felicio | Arthur Borges |
In-app purchases
Tonic FX
No in-app purchases
SampleFit
- SampleFit Lifetime$7.99









