Help & Info
How to use Parkdex
Pick a state, open a park, press Stamp this visit, and add a field note. Sign in to save stamps and notes on your account. On a state card, You shows your own progress. Compare lines you up with friends. Adding a friend sends a request they can accept. You can give a friend a nickname, and Copy invite link shares your code.
Open a park and press Stamp this visit. You can add a field note. Only you can see it.
A gold outline means you've stamped every open park in that state. Closed and planned parks don't count.
Closed or planned parks can't be stamped yet.
Stamps made before signing in stay in this browser. Sign in with Google or X to keep them on your account.
The map
States start white and fill in with their flag as you stamp parks. A finished state gets a gold outline. A state that is not in the catalog yet is filled with pale tan and dark gray diagonal stripes. That means its park page is not finished.
Park pages
The pin marks the park. The filled county is where it sits, or the parish in Louisiana. The star marks the state capital.
Gallery
Some park pages have a Gallery. These are photos taken by the Parkdex owner on real visits, so not every park has them yet. Tap a photo to see it larger, then swipe or use the arrows.
Friends
Where to find it
The Friends card is on the home page. Open the Friends drop-down for your code and settings. Your friends list stays visible below it.
Your code
Every signed-in account has a 6-character code. Share it, or copy an invite link.
Requests
Adding a friend sends a request. They accept or decline. If you both ask, you're linked at once.
What friends see
Friends see which parks you've stamped. They never see your field notes, seen flags, or stamp dates.
Controls
You can reset your code. The old code stops working, and current friends stay linked. A switch hides your stamps from friends. You can rename a friend. Only you see that nickname. You can block someone, or remove a friend.
Compare
On a state card, Compare lines you up with friends. Tap a name to see their map. Tap Your map to go back.
Field rarity
Field rarity is a Parkdex rank, not an agency designation. State parks use stamps. Common is a plain plate, Uncommon a ticket, Rare a ringed seal, and Legendary a burst.
Parkdex assigns the rank from the visit, not from size or popularity.
Common is a usual park visit, such as a lake, a campground, or a trail, with no one feature that sets it apart.
Uncommon means the park has something extra. That can be a named historic place, a beach, or plants you do not see at every park.
Rare means the landscape or the way you visit is singular. A cave, a dune field, a spring you can only walk with a guide, or a barrier-island beach fits here.
Legendary is used for a few places that stand alone, such as Enchanted Rock, Palo Duro Canyon, or Big Bend. Louisiana has none yet. A national park is not automatically Legendary.
- Plain plate
Common
- Ticket
Uncommon
- Ringed seal
Rare
- Burst
Legendary
National park badges
A national park uses a badge instead of a stamp. The picture and the colors match that park's ecosystem. The rank under the badge is still the field rarity. These four are examples, not parks in the catalog.
- Prairie
Common · National
- Coast
Uncommon · National
- Desert
Rare · National
- Canyon
Legendary · National
FAQ
Why is a park closed, and what does “Not yet open” mean?
Closed parks can be read but not stamped. When an opening is known, the park page shows an expected opening line.
Why do national parks appear next to state parks?
Parkdex lists only state parks and national parks, in the same catalog.
Why are some parks reservation-only or tour-only?
Some parks limit how you can visit. Post Oak Ridge is reservation-only day use. Devil's Sinkhole and Honey Creek are tours only. Check the official park page before you go.
Why does this park have no photos?
Photos are added after a visit. Parks without photos don't show a Gallery yet.
Why are some parks listed but closed?
They are planned or not yet open to the public. They are shown on the Closed tab, with an expected opening date when one is known.
How many parks are there?
Parkdex lists only state parks and national parks. Parkdex currently has:
- Texas: 95 parks, including 6 closed or planned and 2 national parks.
- Louisiana: 21 state parks.
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Your account and privacy
Signing in with Google or X saves your stamps, notes, and map progress to your account only. Stamps you press before you sign in stay in this browser. They are not copied onto your account, and field notes are saved only after you are signed in.
Coming soon
More states are on the way.
Add Parkdex to your phone
On an iPhone, open Safari. Tap Share, then Add to Home Screen, then Add.
On Android, open Chrome. Open the menu, then Add to Home screen or Install app.
The icon is the Parkdex logo. If you saved a shortcut before the icon was added, delete it and add it again.
Feedback
Use Report a problem for wrong or missing park information. Use Suggest an idea for new features or park ideas.
Data sources
Park facts come from each state's official parks agency (Texas Parks and Wildlife, Louisiana State Parks) and the National Park Service. Photos and captions are the Parkdex owner's. Parkdex is an independent fan project and is not run by any park agency. Last checked October 16, 2026. Confirm hours, permits, and closures with the park before you go.