# Qudelix vs MathCareer Sigma

The clearest difference is rating: MathCareer Sigma at 5.0 against Qudelix's 4.3. MathCareer Sigma also leads on update cadence (every 3 days vs every 6 weeks). Qudelix's advantage is monetization model (free vs paid) and ratings volume (86 vs 3). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

MathCareer Sigma holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Qudelix has 86 ratings behind it against 3, so its average is the more settled of the two.

Qudelix ships an update every 6 weeks, MathCareer Sigma every 3 days. The most recent releases landed on November 11, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Qudelix | MathCareer Sigma |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (86 ratings)](https://appshunter.io/ios/app/qudelix/id1515641059/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/mathcareer-sigma/id6759996998/reviews)** |
| Number of ratings | **86** | 3 |
| Positive reviews | 69.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 days** |
| Monetization | **Free** | Paid |
| Size | 21 MB | 44 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Qudelix, Inc.](https://appshunter.io/developer/1515641058) | [Yifan WANG](https://appshunter.io/developer/1881957259) |

## What reviewers say

### Qudelix

[App page](https://appshunter.io/ios/app/qudelix/id1515641059)

This app serves as an official remote controller for compatible Qudelix DAC/AMP devices. It allows users to connect via Bluetooth to manage audio settings, customize equalizers, and monitor device status. Users can adjust volume, DAC settings, and update device firmware.

**Highlights:** Device control and status monitoring via Bluetooth, Equalizer settings and preset management, Volume control, DAC and audio output settings, Battery status monitoring, Device firmware updates

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

**In-app purchases:** none

**What reviewers like**

- 👍 Excellent app, works perfect
- 💡 Amazing EQ results
- 🚀 Super long term support
- 👍 NO bugs. Runs well.
- 👍 Great control app

**What reviewers complain about**

- 🐛 UI clearly created by engineers
- 🐛 Documentation not updated correctly
- 🐛 Unacceptable basic feature setup
- 🐛 Won't recognize Bluetooth devices
- 🐛 Useless if can't connect device

**Reported bugs**

- App needs work
- Documentation does not provide a coherent answer
- Wont recognize any Bluetooth devices
- App is useless if you can’t connect a device to it
- Doesn’t work on iPhone 15

**Requested features**

- How to set a preset for PEQ for each headphone
- Firefox or Safari extension
- Dark mode
- Live 20 band VU meter displayed in low opacity behind EQ curve
- Update autoeq list


### MathCareer Sigma

[App page](https://appshunter.io/ios/app/mathcareer-sigma/id6759996998)

This app helps mathematics students and faculty find jobs and advance their careers. It aggregates job postings daily and provides a platform for professional networking and sharing career tips. Features include a personal QR code generator for easy profile sharing.

**Highlights:** Daily math job postings aggregation, Professional community for networking, Career tips exchange, Personal QR code generator, Profile sharing for connections

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Qudelix free?

Qudelix is free to download, with no in-app purchases.

### Is MathCareer Sigma free?

MathCareer Sigma is free to download, with no in-app purchases.

### Which has better reviews, Qudelix or MathCareer Sigma?

MathCareer Sigma is rated higher. Qudelix averages 4.3 out of 5 from 86 ratings, while MathCareer Sigma averages 5.0 from 3 ratings.

### Do Qudelix or MathCareer Sigma have ads?

Neither Qudelix nor MathCareer Sigma shows ads.

### Which is updated more often, Qudelix or MathCareer Sigma?

Qudelix ships an update every 6 weeks, and MathCareer Sigma every 3 days. Most recently, Qudelix was updated on November 11, 2026 and MathCareer Sigma on October 31, 2026.

---

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