# StageBoost vs Tonic Synth

The clearest difference is price: StageBoost at Free against Tonic Synth's $20.90. StageBoost also leads on iOS requirement (15.1 vs 17.0). Tonic Synth's advantage is in-app purchases (none vs 1) and ads (none vs shown). On update cadence and device support there is nothing between them.

StageBoost is free to download; Tonic Synth costs $20.90 up front. StageBoost sells 1 in-app purchase, starting at $1.99 per month. Tonic Synth asks for nothing beyond the download.

StageBoost ships an update every 2 days, Tonic Synth every 4 days. The most recent releases landed on October 1, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | StageBoost | Tonic Synth |
| --- | --- | --- |
| Price | **Free** | $20.90 |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/tonic-synth-auv3/id6783345229/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 days** | Every 4 days |
| Monetization | — | Paid |
| Size | 147 MB | 34 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [STAGEBOOST SOLUCOES E SERVICOS LTDA](https://appshunter.io/developer/1803834711) | [Rubens Felicio](https://appshunter.io/developer/6775565794) |

## What reviewers say

### StageBoost

[App page](https://appshunter.io/ios/app/stageboost/id6743656961)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Seja Pro | $1.99 | per month |


### Tonic Synth

[App page](https://appshunter.io/ios/app/tonic-synth-auv3/id6783345229)

A powerful synthesizer app offering three oscillators with diverse sound sources, including physical modeling and wavetables. It features eight analog filter simulations, extensive modulation options, and a full effects rack. Available as a standalone app or AU/AUv3 plugin for Mac and iOS.

**Highlights:** Three oscillators with physical modeling, virtual-analog, wavetable, SF2, and sysex FM, Eight analog filter simulations (LP/HP/BP/Notch, 12/24 dB), Comprehensive modulation: LFO, envelope follower, note-per-note filter envelope, Full effects rack: chorus, delay, reverb, EQ, compressor, flanger, phaser, Standalone app and AU/AUv3 plugin support, Live performance features: editable presets, six scenes, MIDI Learn

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is StageBoost free?

StageBoost is free to download, with in-app purchases available.

### Is Tonic Synth free?

Tonic Synth costs $20.90, with no in-app purchases.

### Do StageBoost or Tonic Synth have ads?

StageBoost shows ads; Tonic Synth does not.

### Which is updated more often, StageBoost or Tonic Synth?

StageBoost ships an update every 2 days, and Tonic Synth every 4 days. Most recently, StageBoost was updated on October 1, 2026 and Tonic Synth on October 10, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*