SpawnGraph vs MindOnMap
MindOnMap is an AI-assisted mind mapping tool that also handles flowcharts, Gantt charts, fishbone, ER and UML diagrams. The diagram breadth is real — but the free plan caps you at 3 mind map files, 50 nodes per map, 100 AI credits per month, watermarked exports, and files that expire after 3 days. SpawnGraph removes those caps and replaces the AI-credit model with browser-side NLP that's always free.
| Feature | SpawnGraph | MindOnMap |
|---|---|---|
| Free tier available | Yes | Yes |
| Free plan: maximum mind map files | Unlimited browser-side; 2 cloud-saved | 3 files total |
| Free plan: nodes per map | Unlimited | 50 nodes |
| Free plan: file expiration | None | 3 days |
| AI generation model | Free, unlimited (client-side NLP) | 100 AI credits / month (free), then paid |
| Text → mind map (automatic) | Yes | Yes |
| URL → mind map | Yes | No |
| PDF → mind map | Yes | Paid AI credits |
| YouTube → mind map | Yes | No |
| Audio → mind map | Yes | No |
| File formats supported | 93+ | A handful |
| Real-time collaboration | Yes (free) | Paid plans only |
| Watermark on free exports | PNG only | PNG + JPG watermarked |
| Export formats (free) | 8 (CSV, OPML, YAML, HTML, TXT, TSV, FreeMind, PNG) | PNG / JPG with watermark |
| No data sent to server (client-side NLP) | Yes | No |
| Pricing (paid) | $5/mo (yearly) | $15/mo, $6/mo yearly, $180 perpetual |
| Diagram types beyond mind maps | Mind map focus | Flowchart, Gantt, fishbone, UML, ER, timeline |
MindOnMap vs SpawnGraph: free tier reality
MindOnMap's free tier is technically free but heavily gated: only 3 mind map files can exist at once, each capped at 50 nodes, with 100 AI credits per month and files that expire after 3 days of inactivity. PNG and JPG exports carry a watermark. Past those limits the monthly plan is $15. SpawnGraph's free plan has no node cap, no file expiration, no AI credit system — the natural-language processing runs in your browser and is free no matter how many times you use it. Two boards can be saved to the cloud; unlimited boards live in your browser. Solo Pro at $5/mo yearly is the upgrade path if you want unlimited cloud-saved boards and additional export formats.
AI credits vs browser-side NLP
MindOnMap uses the standard AI-credit metering model: you get 100 credits free, then 1,000/month on the $15 plan, 15,000/year on the annual plan, 60,000 with the perpetual purchase. Each AI generation, node expansion, or summarization burns credits. SpawnGraph uses a different architecture: the NLP runs in your browser with no LLM API call, no per-generation cost, and no credit accounting. You can convert a PDF, a URL, a YouTube video, or a 3-hour audio file into a mind map as many times as you want without hitting a meter. Open DevTools → Network during generation to verify nothing is sent to a server.
The 3-day file expiration
MindOnMap's free tier expires files after 3 days. If you build a mind map on Monday and don't open the account until Friday, the file is gone. The paid plan extends that to 7 days. SpawnGraph does not expire free-tier files at all — saved boards persist as long as your account exists, and browser-only boards persist until you clear your browser storage. For students, weekend brainstormers, or anyone who doesn't log in daily, this is a meaningful difference.
When MindOnMap is the better choice
MindOnMap is the right pick if you need one tool that covers mind maps plus flowcharts, Gantt charts, fishbone diagrams, UML, and ER diagrams — the multi-diagram breadth is genuine and SpawnGraph doesn't try to compete with it. The 60+ language UI is also useful for international teams. SpawnGraph is the better fit when you specifically want mind mapping, need unlimited free use without an AI credit meter, want files that don't expire, or need real-time collaboration without upgrading.