# Dr. Robo - Tremolo — Tremolo with a pulse

> Vintage sci-fi tremolo effect for guitar, keyboards, synths, and audio. (iPhone/iPad app by Joshua Rideout.)

- Source: https://appshunter.io/ios/app/dr-robo-tremolo/id6825751205 (this page in markdown: same URL + `.md`)
- Developer: [Joshua Rideout](https://appshunter.io/developer/1862462443)
- Category: Music
- Price: $0.99
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 9+
- Requires: iOS 15.0 · 83 MB
- Released: 2026-10-31
- Data updated: 2026-11-06
- Monetization: paid

## What is Dr. Robo?

Dr. Robo is a tremolo effect for guitar, keyboards, synths and other audio, wrapped in a vintage science-fiction pedal.

Turn SPEED for slow movement or rapid rhythmic pulses. CLOSE controls tremolo depth, from subtle sway to a deep chop. PITCH changes the pulse shape, and the OSCILLATOR trimmer adds stereo motion.

Scroll the mechanical tempo counter to set the tempo, or tap it to tap in a beat. The counter and SPEED knob stay in sync. In an Audio Unit host, enable HOST SYNC in the help menu to follow the session tempo and select rhythmic divisions.

Use Dr. Robo as a standalone live audio effect with your audio interface, or load its AUv3 Audio Unit extension in a compatible music app. The built-in help explains the controls.

Audio is processed locally. No account or subscription is required. For standalone live use, connect an instrument through a compatible audio interface and use headphones to avoid feedback.

## Key features

- Adjustable speed and depth
- Controllable pulse shape
- Mechanical tempo counter
- Tap tempo function
- Standalone live audio effect
- AUv3 Audio Unit extension

## Is Dr. Robo safe?

Not enough ratings yet to assess Dr. Robo.

## Is Dr. Robo legit?

Dr. Robo - Tremolo appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Dr. Robo is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Frequently asked questions about Dr. Robo

### What instruments can I use Dr. Robo with?

Dr. Robo is designed for guitar, keyboards, synths, and other audio sources. You can connect your instrument through a compatible audio interface for standalone live use.

### How do I control the tempo in Dr. Robo?

You can set the tempo by scrolling the mechanical tempo counter or by using the tap tempo function. The counter and SPEED knob remain synchronized.

### Can Dr. Robo be used within other music apps?

Yes, Dr. Robo can be loaded as an AUv3 Audio Unit extension in compatible music applications. In an Audio Unit host, you can enable HOST SYNC to follow the session tempo and select rhythmic divisions.

### Does Dr. Robo require an account or subscription?

No, Dr. Robo does not require an account or subscription. Audio is processed locally, and the app is a one-time purchase.

### What is the price of Dr. Robo?

Dr. Robo is available for a one-time purchase of $0.99.

### What devices is Dr. Robo compatible with?

Dr. Robo is compatible with iPhone, iPad, and iPod touch devices.

### What is the age rating for Dr. Robo?

Dr. Robo has an age rating of 9+, making it suitable for a wide range of users.

### How often is Dr. Robo updated?

The latest version, 1.0.0, was released on October 31, 2026, indicating it is a recent release. Future updates will depend on the developer's roadmap.

## Version history (last 1 release)

### 1.0.0 — 2026-10-31

No release notes.

## More apps by Joshua Rideout

- [ReadLeft](https://appshunter.io/ios/app/readleft/id6757007497)
- [VividCut](https://appshunter.io/ios/app/vividcut/id6759135844)
- [Serphonica](https://appshunter.io/ios/app/serphonica/id6759585139)
- [Ember - Overdrive Distortion](https://appshunter.io/ios/app/ember-overdrive-distortion/id6788960282)
- [Coil - Spring Reverb](https://appshunter.io/ios/app/coil-spring-reverb/id6801904963)
- [Slab - Plate Reverb](https://appshunter.io/ios/app/slab-plate-reverb/id6804340099)

All apps by Joshua Rideout: https://appshunter.io/developer/1862462443

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-11-06.*