Open MobileUI vs Devmaxx
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Open MobileUI
Access your self-hosted AI assistant on mobile with a smooth, modern, and privacy-focused client. Enjoy native performance, smart synchronization, and a mobile-first interface for productivity on the go.
- Native performance
- Mobile-first interface
- Automatic synchronization
- Image uploads and file attachments
- System-aware dark mode
- Secure credential storage
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Open MobileUI is a professional mobile client for Open WebUI, built to give you convenient access to your self-hosted AI assistant on mobile devices. It delivers a smooth, modern, mobile-first experience with native performance and smart synchronization. Designed for productivity on the go, Open MobileUI helps individuals and teams stay connected to their AI workflows from anywhere. Whether you need quick answers, mobile access to your company AI assistant, or a privacy-focused self-hosted solution, Open MobileUI is built for flexibility and control. Key features: Native performance with smooth animations and responsive touch interactions Clean, intuitive interface designed for mobile-first workflows Automatic synchronization with your Open WebUI instance Image uploads, file attachments, and rich media support System-aware dark mode Intelligent keyboard handling and input optimization Why choose Open MobileUI: Optimized native rendering for a faster and smoother mobile experience Mobile-first design tailored for touch interactions and gestures Secure credential storage and strong authentication support Reliable behavior when connectivity is limited Professional architecture built for stability and maintainability Privacy: Open MobileUI is designed with privacy in mind. Your conversations and data remain on your self-hosted Open WebUI instance. The app does not operate backend services that receive, store, or process your chat content. Open MobileUI brings the power of Open WebUI to a polished mobile experience built for speed, convenience, and privacy.
Devmaxx
This app provides a daily system design question to help software engineers master essential skills for interviews and career growth. It offers clear explanations, linked resources, and a private community for learning and practice.
- Daily system design questions
- Clear explanations and answer breakdowns
- Linked learning resources
- Access to previous questions
- Private developer community
- Progress tracking
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System design is becoming one of the most important skills for software engineers. Many companies now require a dedicated system design interview, and your career growth often depends on your ability to design large-scale systems. Devmaxx gives you one focused system design question every day across databases, infrastructure, APIs, theory, and product to help you learn these skills and stay sharp. Each question takes about two minutes, and includes a resource to learn more about the subject. What you’ll get: • A new system design question daily • Clear explanations for every answer • Breakdown of the correct answer • Access to previous questions • Linked resources to go deeper • Access to a private community of developers learning and building the same things as you • Progress tracking to monitor growth If you’re preparing for interviews, this builds daily momentum. If you’re already working as an engineer, this keeps your fundamentals sharp. Open the app. Answer one question. Land the offer. * All features described above require a subscription Terms of Service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is rating: Devmaxx at 4.3 against Open MobileUI's 2.6. Devmaxx also leads on ratings volume (520 vs 15) and review sentiment (18% vs 0%). Open MobileUI's advantage is in-app purchases (none vs 2) and update cadence (every 5 days vs every 2 weeks). On price, ads, device support and iOS requirement 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. Devmaxx sells 2 in-app purchases, starting at $8.99 per month. Open MobileUI asks for nothing beyond the download.
Devmaxx holds the better App Store score, 4.3 against 2.6. That said, the two scores are not equally well evidenced: Devmaxx has 520 ratings behind it against 15, so its average is the more settled of the two. Written reviews point the same way: 0% of Open MobileUI's written reviews are positive against 18% of Devmaxx's.
Open MobileUI ships an update every 5 days, Devmaxx every 2 weeks. The most recent releases landed on September 30, 2026 and October 9, 2026 respectively.
| Parameter | Open MobileUI | Devmaxx |
|---|---|---|
| Price | Free | Free |
| Rating | 2.6 (15 ratings) | 4.3 (520 ratings) — better |
| Positive reviews | 0.0% of reviews | 18.4% of reviews — better |
| Number of ratings | 15 | 520 — better |
| Update frequency | Every 5 days — better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Subscription |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 16.4 — better | 17.5 |
| Further details — not scored | ||
| Size | 67 MB | 29 MB |
| Age rating | 4+ | 12+ |
| Developer | Ronas IT OU | Arjay McCandless LLC |
Customer experience
Open MobileUI
Devmaxx
In-app purchases
Open MobileUI
No in-app purchases
Devmaxx
- Monthly Devmaxx Subscription7 Days trial$8.991 Month
- Annual Devmaxx Subscription7 Days trial$59.991 Year









