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Make money from your study material — yes, really. You already build mind-maps for your course revision. Marvex lets you turn that habit into income. How it works (the 5-minute version): 1. Sign up for the affiliate program at marvex.app/affiliate — free, no quota, no follower count required. 2. You get a unique referral link. Anyone who buys Marvex through it gets 25% off, you earn 5% commission on every invoice they pay (recurring — for as long as they stay subscribed). 3. Share the link wherever your subject group hangs out: WhatsApp study chats, Discord servers, your Linktree, the description of a TikTok where you flash your revision map, the citations section of an essay you publish on Substack / Medium / Notion. 4. Pair the link with the share-image generator (built into your dashboard) — it bakes your link into a 1200×630 card you can post on Instagram / X / LinkedIn. 5. Get paid quarterly via Wise or PayPal. No minimum until $50; no fees deducted from your end. Real numbers: every 10 friends you sign up at the $15/mo Pro plan earns you $7.50/mo recurring, forever. 100 sign-ups = $75/mo on autopilot. And every classmate you refer is also getting a tool that actually makes their degree easier — so you're not selling snake oil, you're sharing something they'd thank you for anyway. Start your link here: https://marvex.app
I built a mind-map of my entire research backlog in 60 seconds. marvex.app — drag a PDF in, watch it become a navigable map. 25% off your first month with my link 👇 https://marvex.app
1/ I've been quietly using marvex.app for a few weeks now and it's the only research tool I haven't bounced off. 2/ Drop a PDF in. It auto-maps. You bring your own AI key — no mark-up, no quotas. Local-first so your reading list never leaves your machine. 3/ $9/mo or $15 if you want all the AI superpowers. 25% off your first invoice with this link: https://marvex.app
If you read more than 5 PDFs a week, you should be mapping them, not highlighting them. I've been testing marvex.app — it's a desktop + web mind-map studio that turns PDFs into navigable trees, lets you bring your own AI key (so there's no provider mark-up), and stores everything locally. Free tier is generous (30-node maps, full export). Pro is $9–15/mo depending on AI usage. They also ship a UK Law add-on with BAILII full-text search and AI case summaries — niche but a killer for the bar. If anyone wants to try, my referral link knocks 25% off the first invoice: https://marvex.app
One tool I've been quietly recommending is **marvex.app**. It's a research-focused mind-map and flowchart studio that runs in the browser AND as a native desktop app. The headline feature is PDF → AI Mind Map: drag a paper in, get a structured tree out. The deal-maker for me was BYOK pricing — you bring your own API key for OpenAI / Claude / Gemini, the app pays nothing on top, and your maps stay local-first by default. Pricing starts at $9/mo (Lite) or $15/mo (Pro). [Try it 25% off →](https://marvex.app)
Subject: A research tool you might actually keep using
Hey {{NAME}},
I keep recommending this one to people who read a lot of PDFs — marvex.app. It's a mind-map studio that auto-builds a navigable tree from any PDF you drop in, with the wrinkle that you bring your own AI key (no mark-up) and your maps stay local on your machine. Desktop app + web; $9–15/mo depending on tier.
If you want to try it: https://marvex.app (25% off your first month through my link, no obligation.)
— YouHonest comparison vs the field.
No competitor ships every feature Marvex does at this price. Screenshot the table for a tweet thread or embed it in a blog. Data sourced from each vendor's public pricing as of Feb 2026.
| Tool | Price | AI PDF→Map | BYOK | Local-first | Desktop | UK Law pack | Flowcharts | PDF Reader |
|---|---|---|---|---|---|---|---|---|
| MarvexYOU | $9–15/mo | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| XMind | $5/mo | — | — | — | ✓ | — | ✓ | — |
| MindNode(Apple-only) | $2.49/mo | — | — | ✓ | ✓ | — | — | — |
| MindMeister | $6/mo | ~ | — | — | — | — | — | — |
| Heptabase | $9/mo | ~ | — | ✓ | ✓ | — | — | ~ |
| Scrintal | $5/mo | ~ | — | — | ✓ | — | — | — |
| Mapify | $9/mo | ✓ | — | — | — | — | — | — |
| Atlas | $12/mo | ✓ | — | — | — | — | — | ~ |
| GitMind | free / $/mo | ✓ | — | — | ~ | — | ✓ | — |
| Notion + AI | $20/mo | — | — | — | ✓ | — | ~ | — |
✓ = full support · ~ = limited / partial · — = not available · YOU = Marvex.
To replicate the full feature set elsewhere you'd need Heptabase ($9) + Mapify ($9) + ChatGPT Plus ($20) + a separate annotator (~$15) ≈ $53/mo before any law-pack subscription.
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Got a campus audience? Earn 4× the commission.
The standard affiliate program is 5% with 25%-off-first-invoice for referees. The Campus Ambassador programme pays 20% with a 20% off · first 12 months deal for students (use a code like STUDENT20), plus posters, classroom slides, and a 60-day cookie.