Tonic FX vs Q Sahara
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
Q Sahara
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Drive it. Shape it. Move on. Q Sahara is an input-driven compressor designed for quick decisions and musical results. There is no threshold to chase and no millisecond math to interpret: drive the signal into Sahara, set the ratio, and let its program-dependent behavior follow the music. INPUT-DRIVEN COMPRESSION A fixed internal threshold means compression is controlled by how hard you drive the input — just like classic analog workflows. MUSICAL TIMING Attack and release are program-dependent, adapting to phrasing, groove and dynamics instead of fixed time values. RATIO WITH CHARACTER Ratio and knee work together. Lower ratios stay smooth and forgiving; higher ratios add firmness and control without limiter behavior. MADE FOR iOS • AUv3 plugin — use it in AUM, GarageBand, Logic Pro for iPad, Cubasis, Loopy Pro and other AUv3 hosts • External sidechain support with dedicated sidechain high-pass filter • Standalone app included • Two hand-crafted themes: Sand Dune and Black Sand • HD and Eco oversampling modes • Zero samples latency, ultra-low CPU • A/B compare and preset management • Factory presets, including artist presets by Grammy-winning engineers FOCUSED BY DESIGN No unnecessary controls, no distractions. Sahara does one thing and does it well: it delivers instant results, stays responsive to your material, and lets you mix by ear instead of by numbers. “Really interesting compressor! Sahara seems to improve the sound of everything I put it on.” — Mark Linett, three-time Grammy-winning producer and engineer “I reach for the Sahara compressor when I want character. It shines on bass, acoustic guitar, snare, parallel drums, and more!” — Brian Vibberts, seven-time Grammy Award-winning producer and engineer
Screenshots
Verdict
The clearest difference is price: Tonic FX at $9.99 against Q Sahara's $19.99. Q Sahara's advantage is update cadence (every 3 days vs weekly) and iOS requirement (15.0 vs 17.0). On 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
Tonic FX costs $9.99 and Q Sahara $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Tonic FX ships an update weekly, Q Sahara every 3 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.
| Parameter | Tonic FX | Q Sahara |
|---|---|---|
| Price | $9.99 — better | $19.99 |
| Rating | 5.0 (3 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Weekly | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 10 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | Rubens Felicio | Pulsar Modular |
In-app purchases
Tonic FX
No in-app purchases
Q Sahara
No in-app purchases








