Qudelix vs MathCareer Sigma
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Qudelix
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.
- 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
Read full descriptionHide full description
Official remote controller app for Qudelix DAC/AMP devices. Connect a compatible Qudelix device via Bluetooth to configure audio settings, manage equalizer presets, and monitor device status. Features include: * 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 * Bluetooth codec and streaming information Feature availability varies by device. Requires a compatible Qudelix DAC/AMP connected via Bluetooth.
MathCareer Sigma
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.
- Daily math job postings aggregation
- Professional community for networking
- Career tips exchange
- Personal QR code generator
- Profile sharing for connections
Read full descriptionHide full description
MathCareer Sigma, a mobile app designed to support mathematics students and faculties in job searching and professional development. MathCareer Sigma streamlines the job hunt by automatically collecting and updating math-related job postings daily from platforms like MathJobs, SIAM, AIM, LinkedIn, and HigherEdJobs, delivering them directly to your phone. No more time-consuming searches - the right opportunities come to you! Beyond job listings, the app fosters a professional community where users can share opportunities, exchange career tips, and network with others who share similar research interests. This makes connecting with the right people at conferences, seminars, or online effortless. A standout feature is the personal QR code generator. Include your code on posters, slides, or presentations, and let others instantly view your profile and connect with you - perfect for academic events or networking occasions. MathCareer Sigma isn’t just an app — it’s your smart, all-in-one career companion for the mathematics community.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Qudelix | MathCareer Sigma |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (86 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 69.6% of reviews | — |
| Number of ratings | 86 — better | 3 |
| Update frequency | Every 6 weeks | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 21 MB | 44 MB |
| Age rating | 4+ | 4+ |
| Developer | Qudelix, Inc. | Yifan WANG |
Customer experience
Qudelix
MathCareer Sigma
Bugs and requests
Qudelix
Reported bugs
25 issues- 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
Show 20 moreShow fewer
- Causes iPad to lock up
- Some settings won’t apply until I disconnect and reconnect
- Causes issues when it’s running in the background and it’s become extremely bad
- Wont connect to app
- Just won’t connect to app even though it’s connect to my phone
- Thoroughly disappointed
- App kept disconnecting from the 5k at random
- Stopped reconnecting
- App still will not recognize the 5k Device
- Still got the sound, but at a near whispered volume
- App fails to recognize the connected device multiple times
- Even pressing “connect” within the app does nothing
- Rarely registers my Qudelix
- For some reason the EQ just doesn’t sound right
- No app connection
- Connects in phone; not detected in app, even in pairing mode
- Doesn’t work with FW2.0
- 5K also playing up with buttons not working correctly etc.
- Battery graph is unusable on iPadOS
- App is very frustrating to use on the iPad since it opens with gigantic black bezels
Requested features
10 requests- 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
Show 5 moreShow fewer
- Allow importing autoeqs
- German translation
- Toggle absolute volume and volume protection
- Native iPad UI
- Enable modern iPadOS multitasking paradigms
MathCareer Sigma
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Qudelix
No in-app purchases
MathCareer Sigma
No in-app purchases
Questions
Is Qudelix free?
Is MathCareer Sigma free?
Which has better reviews, Qudelix or MathCareer Sigma?
Do Qudelix or MathCareer Sigma have ads?
Which is updated more often, Qudelix or MathCareer Sigma?
Other comparisons
