# Uber Synth vs Stellr

The clearest difference is rating: Stellr at 3.4 against Uber Synth's 2.0. Stellr also leads on review sentiment (67% vs 50%) and ratings volume (9 vs 1). Uber Synth's advantage is update cadence (every 3 months vs every 40 months) and price ($3.99 vs $4.99). On ads, in-app purchases, monetization model and device support there is nothing between them.

Uber Synth costs $3.99 and Stellr $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Stellr holds the better App Store score, 3.4 against 2.0. That said, the two scores are not equally well evidenced: Stellr has 9 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 50% of Uber Synth's written reviews are positive against 67% of Stellr's.

Uber Synth ships an update every 3 months, Stellr every 40 months. The most recent releases landed on September 29, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Uber Synth | Stellr |
| --- | --- | --- |
| Price | **$3.99** | $4.99 |
| Rating | [2.0 (1 ratings)](https://appshunter.io/ios/app/uber-synth/id601766687/reviews) | **[3.4 (9 ratings)](https://appshunter.io/ios/app/stellr/id1448350913/reviews)** |
| Number of ratings | 1 | **9** |
| Positive reviews | 50.0% of reviews | **66.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 40 months |
| Monetization | Paid | Paid |
| Size | 7 MB | 26 MB |
| Requires iOS | 14.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mark Carlotto](https://appshunter.io/developer/293347135) | [BACKPULLVER SOFTWARE LTD OOD](https://appshunter.io/developer/1035157788) |

## What reviewers say

### Uber Synth

[App page](https://appshunter.io/ios/app/uber-synth/id601766687)

This app offers a polyphonic multi-timbral FM synthesizer for iOS devices. It features a triple-oscillator sound engine with five distinct multi-timbral options for creating evolving and complex soundscapes. Supports Audiobus for integration with other music apps.

**Highlights:** Polyphonic multi-timbral FM synthesizer, Triple-oscillator cross-modulated FM engine, Five multi-timbral options, Sound map and sound palettes, Evolving sound generation, Audiobus support

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Stellr

[App page](https://appshunter.io/ios/app/stellr/id1448350913)

Create deep, ethereal ambiance with a pitch-shifter, dual delays, and reverb. Explore sonic possibilities with 15 presets, randomization, and parameter automation. Enhance your music with a new dimension of sound.

**Highlights:** Pitch shifter with fine-tuning or semitone snap, Two independent delays for complex feedback, LFO modulation and various reverb types, Pre-gain and dry/wet level control, Audio Unit Extension, Audiobus, Inter-App Audio support, 15 built-in presets with import/export, Realtime frequency spectrum visualizer

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Uber Synth free?

Uber Synth costs $3.99, with no in-app purchases.

### Is Stellr free?

Stellr costs $4.99, with no in-app purchases.

### Which has better reviews, Uber Synth or Stellr?

Stellr is rated higher. Uber Synth averages 2.0 out of 5 from 1 ratings, while Stellr averages 3.4 from 9 ratings.

### Do Uber Synth or Stellr have ads?

Neither Uber Synth nor Stellr shows ads.

### Which is updated more often, Uber Synth or Stellr?

Uber Synth ships an update every 3 months, and Stellr every 40 months. Most recently, Uber Synth was updated on September 29, 2026 and Stellr on October 2, 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.*