# Solderbox vs Circa Looper

The clearest difference is review sentiment: Solderbox at 90% against Circa Looper's 33%. Solderbox also leads on rating (5.0 vs 4.6) and device support (4 vs 1). Circa Looper's advantage is price ($7.99 vs $12.99) and update cadence (every 3 weeks vs every 6 weeks). On ads, in-app purchases, monetization model and iOS requirement there is nothing between them.

Solderbox costs $12.99 and Circa Looper $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Solderbox holds the better App Store score, 5.0 against 4.6. Both are backed by a comparable volume of ratings — 27 and 9 respectively. Written reviews point the same way: 90% of Solderbox's written reviews are positive against 33% of Circa Looper's.

Solderbox ships an update every 6 weeks, Circa Looper every 3 weeks. The most recent releases landed on September 23, 2026 and June 11, 2026 respectively.

## The numbers

| Metric | Solderbox | Circa Looper |
| --- | --- | --- |
| Price | $12.99 | **$7.99** |
| Rating | **[5.0 (27 ratings)](https://appshunter.io/ios/app/solderbox/id6502593345/reviews)** | [4.6 (9 ratings)](https://appshunter.io/ios/app/circa-looper/id6739890878/reviews) |
| Number of ratings | **27** | 9 |
| Positive reviews | **90.0% of reviews** | 33.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | Paid | Paid |
| Size | 8 MB | 39 MB |
| Requires iOS | 13 | **12.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Bram Bos](https://appshunter.io/developer/325340444) | [Audio Damage, Inc.](https://appshunter.io/developer/1248448317) |

## What reviewers say

### Solderbox

[App page](https://appshunter.io/ios/app/solderbox/id6502593345)

This app is a compact, semi-modular synthesizer designed for generative music creation. It offers a comprehensive set of modular functions, aiming for analog-like sound and behavior with unique digital effects and an 'Instability Engine' for organic fluctuations.

**Highlights:** Generative synthesis tools, Analog-like sound emulation, Instability Engine for organic fluctuations, Audio Unit (AUv3) compatibility, Built-in Pulsequencer melody generator, Multiple filter modes, Stackable patch cables

**Features:** Vision Pro support

**In-app purchases:** none


### Circa Looper

[App page](https://appshunter.io/ios/app/circa-looper/id6739890878)

A powerful multi-channel looping instrument for iPad, designed for musicians and producers. It offers six independent stereo loop layers, deep modulation, precision syncing, and built-in effects for creating complex patterns and evolving soundscapes. Its touch-friendly interface allows for hands-on creative control and seamless DAW integration.

**Highlights:** Six independent stereo loop layers, Deep modulation control, Precision syncing, Built-in reverb and delay, Touch-friendly interface, Full MIDI mapping, Drag-and-drop audio export

**In-app purchases:** none


## Frequently asked questions

### Is Solderbox free?

Solderbox costs $12.99, with no in-app purchases.

### Is Circa Looper free?

Circa Looper costs $7.99, with no in-app purchases.

### Which has better reviews, Solderbox or Circa Looper?

Solderbox is rated higher. Solderbox averages 5.0 out of 5 from 27 ratings, while Circa Looper averages 4.6 from 9 ratings.

### Do Solderbox or Circa Looper have ads?

Neither Solderbox nor Circa Looper shows ads.

### Which is updated more often, Solderbox or Circa Looper?

Solderbox ships an update every 6 weeks, and Circa Looper every 3 weeks. Most recently, Solderbox was updated on September 23, 2026 and Circa Looper on June 11, 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.*