San Diego's Mission Trail
Like Duolingo, but for San Diego's Mission Trail. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.
For the part of you with thirty open tabs that never became anything.
Free during early access · No credit card · iPhone & Android

Key ideas in San Diego's Mission Trail
- San Diego was the first of the 21 California missions and presidios
- Spain feared Russian and British expansion into the Pacific Northwest
- The 1769 settlement marked the start of continuous European presence in Alta California
- The expedition was a defensive move to claim and hold the coastline
- Why San Diego holds the title of 'Birthplace of California'
- The strategic motivation behind the Portolá expedition
- The bay's natural shape protected ships from the open ocean's rough waves
- A deep, calm harbor was essential for unloading heavy supplies from Mexico
- The settlement combined military and religious authority
- The high vantage point of the hill allowed the Spanish to spot incoming ships
- The geographic advantage of San Diego Bay
- The dual nature of the first settlement
- The settlers could not yet grow enough food and relied on 'supply ships'
- Scurvy and starvation were common because ships from Mexico were often delayed
- The vulnerability of the early settlement
- It was the first of the 21 California missions established by the Spanish
You've tried the other tabs
Thirty open tabs. Four facts you actually kept.
You watched. You nodded. By Sunday it was gone.
One answer, then back to scrolling.
Eight weeks. You meant to finish. You didn't.
Tomo gives San Diego's Mission Trail the Duolingo treatment: levels, streaks, and quick quizzes that test what you just learned. That game loop is what the tabs above never had, so it's the one you actually finish.
Here's what playing it feels like
A real question from this course. Take your best guess.
Imagine the Spanish king looking at a map. Which rival powers was he most worried about moving into the Pacific Northwest?
Get it right to open this lesson and 23 more in the app.
Where San Diego's Mission Trail takes you
Discover the origins of California's first city through the lens of the Spanish missions and the historic El Camino Real.
- 1
The First Footprints
- The Birth of San Diego
- Mission San Diego de Alcalá
- 2
The King's Highway
- El Camino Real
- The Language of the Bells
- 3
Life and Impact
- A Changing Landscape
- The Kumeyaay Perspective
- 4
The Mission Legacy
- From Missions to Ranchos
- San Diego's Spanish Identity
4 sections · 8 units · 24 levels. Built to play, not to enroll.
You pick the voice
San Diego's Mission Trail is taught in the The Storyteller style: every lesson is a story. Want a different feel? In the app you can spin up the same topic in any of Tomo's teaching styles. Same facts, totally different vibe.
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Start San Diego's Mission Trail today.
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