Cumbersome vs Open MobileUI
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Cumbersome
This app provides direct API access to various AI language models, offering advanced control over parameters and provider selection. It allows users to compare models, integrate custom tools, and manage conversations with rich editing and export options. Designed for privacy, it syncs data via iCloud and is available on multiple Apple devices.
- Direct API access to multiple AI providers
- Total control over model selection and parameters
- Compare AI models head-to-head
- Integrate custom tools and local browser use
- Rich, editable conversations with Markdown and LaTeX
- Private by design with iCloud sync
- Native support for iPhone, iPad, and Mac
Read full descriptionHide full description
Use Apple Private Cloud Compute, your API keys, or an OpenAI-compatible endpoint. I built Cumbersome because consumer AI apps kept dumbing things down. Cumbersome is the manual transmission of AI apps: more complex, but with far greater control. WHY I BUILT THIS Consumer AI apps hide the controls I want and lock me into one provider. I wanted direct API access, the freedom to pick and compare models, and to pay providers for what I use. This is the app I use every day, so I pay attention and try to get it right. SUPPORTED PROVIDERS - Apple Private Cloud Compute - ChatGPT / OpenAI - Claude / Anthropic - Gemini / Google AI Studio - OpenRouter multi-provider - Vercel AI Gateway multi-provider - Z.ai - OpenAI-compatible custom endpoints, including Ollama, Azure, LM Studio, Groq, Together, and self-hosted backends WHAT YOU GET - A versatile API client. One app, every major provider and model. - Total control. Pick your model, tune the parameters, switch providers mid-conversation. - Compare models head to head. Stream multiple chats in parallel and let an AI judge pick the best. - Bring your own tools. Local browser use, reasoning, web search, image generation. - Rich, editable conversations. Markdown, LaTeX, code blocks, attachments, edit and export anything. - Private by design. iCloud sync across devices. Nothing saved to our servers. - Native and accessible on iPhone, iPad, and Mac. MAJOR FEATURES ADDED IN 2026 New in 2.0.0: Apple Private Cloud Compute. No API key. Requires iOS/iPadOS/macOS 27, an Apple Intelligence device, and internet. Apple usage limits apply. 2026-09-21: Independent iPad chat windows. 2026-09-14: Read replies aloud as they arrive. Save and Restart after editing. 2026-08-29: Select multiple chats. Mac export/import of all chats. 2026-08-21: Background replies on iOS 26. Question Cards for clarification. 2026-08-18: Web Agent: a shared, interactive browser. 2026-08-06: Highlight passages and attach notes for your next reply. 2026-08-03: Local Python analysis, charts, Mermaid, Markdown export. 2026-07-31: Gemini video. Responses API for custom providers. 2026-07-28: Parallel browser and MCP tools. 2026-07-23: Mind/Meld combines three AI responses into one. 2026-07-18: Full Simplified Chinese support. 2026-07-12: Ghost/Write drafts your next turn. 2026-07-09: Remote MCP servers and tools. 2026-07-02: Chat themes and reading fonts (Serif, Rounded, Mono). 2026-06-28: Folder system message presets. 2026-06-24: Prompt caching, with usage across providers. 2026-06-17: Reusable system presets per conversation. 2026-06-16: Offload long system messages to iCloud Drive. 2026-06-15: Toggle custom API parameters. 2026-06-11: Compact chats to lower API costs. 2026-06-07: Run JavaScript and HTML. 2026-06-04: OpenRouter PDF parsing and search engine options. 2026-05-12: Quick Prompt shortcut and App Visibility on Mac. 2026-05-09: Folders to group and organize chats. 2026-05-03: Collapsible sidebar sections, synced across devices. 2026-04-22: Image generation with OpenAI and Gemini. 2026-04-18: Local browser search and browsing. 2026-04-11: Headless browser mode. 2026-04-03: Searchable model picker. 2026-03-15: Extended thinking and reasoning across providers. 2026-03-09: Auto-delete chats after a set number of days. 2026-02-28: Custom OpenAI-compatible providers. 2026-02-25: Only Search When Requested. 2026-02-24: Image paste, attachment previews, PDF thumbnails. 2026-02-21: Siri and Shortcuts. 2026-02-20: Vercel AI Gateway and model filters. 2026-02-06: Voice Control, Larger Text, higher contrast. 2026-01-11: VoiceOver, Dynamic Type, keyboard navigation. 2026-01-06: OpenRouter integration. THE DEAL Core features are free. An optional Cumbersome Pro subscription adds advanced Project tools and supports ongoing development. You pay API providers directly for usage. I'm Peter, an indie developer in Reno, Nevada, out among the high desert tumbleweed. No VC money. No growth hacking. Just a tool I wanted to exist.
Open MobileUI
This native mobile client allows you to connect to your self-hosted AI models via Open WebUI. Chat with your AI, manage conversations, and utilize features like web search and image generation, all while maintaining control over your data with no ads.
- Connect to self-hosted AI models
- Real-time streaming responses
- Edit and regenerate AI responses
- Attach photos, files, and web pages
- Voice mode for hands-free interaction
- Organize chats with folders and archives
- Export and share conversations
Read full descriptionHide full description
Open MobileUI is an open-source, native iPhone client for Open WebUI. Connect to your self-hosted server and chat with your AI models on the go: local Ollama models, OpenAI-compatible APIs, or any LLM your Open WebUI admin has set up. Your server, your data. The app connects directly to the Open WebUI server you choose. We do not run any backend that receives, stores or processes your chats, and there are no ads. CONNECT THE WAY YOU HOST • Home lab, VPS or company server • Private networks and Tailscale, including plain HTTP addresses for local setups • Custom domains behind a reverse proxy such as Nginx, Caddy or Traefik • Encrypted HTTPS and WSS connections • Sign in with email and password, LDAP, SSO (OpenID Connect), Google, Microsoft or GitHub CHAT • Real-time streaming responses • Edit and regenerate responses • Switch between AI models in one tap • Attach photos, camera shots, files, web pages and knowledge bases • Web search, image generation and code interpreter when your server enables them • Rich rendering: Markdown, code highlighting, math formulas and source citations • Voice mode: talk to your assistant hands-free and hear the answers read aloud • Voice dictation for your messages • Temporary chats that are not saved ORGANIZE • Folders, pinned chats, search and archive • Share chats and export them BUILT FOR IPHONE • Native performance, smooth animations and gestures • Light, dark and system themes • Smart keyboard handling • Graceful handling of network interruptions • Available in English, German, Spanish, French, Portuguese, Russian, Chinese, Japanese and Romanian PERFECT FOR • Using your self-hosted AI assistant on the go • Privacy-conscious users who want full control over their data • Teams that need mobile access to their company AI assistant REQUIREMENTS Open MobileUI does not host models or provide an AI service. It connects to an Open WebUI server that you or your organization run. Available features depend on your server settings. OPEN SOURCE Open MobileUI is free and open source under the GPL-3.0 license. For support, issues and source code: https://github.com/RonasIT/open-webui-react-native Disclaimer: Open MobileUI is an independent, third-party application. It is not affiliated with the Open WebUI, Ollama or Tailscale projects.
Screenshots
Verdict
The clearest difference is review sentiment: Cumbersome at 89% against Open MobileUI's 20%. Cumbersome also leads on rating (4.9 vs 3.8) and device support (3 vs 1). Open MobileUI's advantage is in-app purchases (none vs 2) and iOS requirement (16.4 vs 26.0). On price, ratings volume, update cadence and ads 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. Cumbersome sells 2 in-app purchases, starting at $4.99 per month. Open MobileUI asks for nothing beyond the download.
Cumbersome holds the better App Store score, 4.9 against 3.8. Both are backed by a comparable volume of ratings — 103 and 36 respectively. Written reviews point the same way: 89% of Cumbersome's written reviews are positive against 20% of Open MobileUI's.
Cumbersome ships an update every 4 days, Open MobileUI weekly. The most recent releases landed on November 13, 2026 and November 12, 2026 respectively.
| Parameter | Cumbersome | Open MobileUI |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (103 ratings) — better | 3.8 (36 ratings) |
| Positive reviews | 88.6% of reviews — better | 20.0% of reviews |
| Number of ratings | 103 — better | 36 |
| Update frequency | Every 4 days — better | Weekly |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | Free — better |
| Devices | iPhone, iPad, Mac — better | iPhone |
| Requires iOS | 26.0 | 16.4 — better |
| Further details — not scored | ||
| Size | 81 MB | 64 MB |
| Age rating | 17+ | 4+ |
| Developer | Folding Sky Co | Ronas IT OU |
Customer experience
Cumbersome
Open MobileUI
In-app purchases
Cumbersome
- Cumbersome Pro Monthly$4.991 Month
- Cumbersome Pro Annual$39.991 Year
Open MobileUI
No in-app purchases
Questions
Is Cumbersome free?
Is Open MobileUI free?
Which has better reviews, Cumbersome or Open MobileUI?
Do Cumbersome or Open MobileUI have ads?
Which is updated more often, Cumbersome or Open MobileUI?
Other comparisons
