diff --git a/.github/workflows/check_export.yml b/.github/workflows/check_export.yml
new file mode 100644
index 00000000..ac29b6c1
--- /dev/null
+++ b/.github/workflows/check_export.yml
@@ -0,0 +1,68 @@
+name: check-export
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  list-examples:
+    runs-on: ubuntu-latest
+    outputs:
+      examples: ${{ steps.generate-matrix.outputs.examples }}
+    steps:
+      - uses: actions/checkout@v3
+      - name: Generate Matrix
+        id: generate-matrix
+        run: |
+          # TODO fix sales export
+          EXAMPLES="$(ls -1 | grep -vw sales | jq -R | jq -s -c)"
+          echo $EXAMPLES
+          echo "examples=$EXAMPLES" >> $GITHUB_OUTPUT
+
+  check-export:
+    needs: [list-examples]
+    strategy:
+      matrix:
+        example: ${{ fromJSON(needs.list-examples.outputs.examples) }}
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-python@v3
+      - run: |
+          f=${{ matrix.example }}
+          if [[ ! -d $f ]]; then
+            echo "$f is not a directory!"
+            exit 1
+          else
+            if [[ ! -f $f/requirements.txt ]]; then
+              echo "$f/requirements.txt is MISSING"
+              exit 1
+            fi
+            pushd $f
+
+            if !( grep -w "^reflex" requirements.txt >/dev/null 2>&1 ); then
+              echo "$f/requirements.txt does not contain 'reflex'"
+              exit 1
+            fi
+
+            python -m venv venv
+            source venv/bin/activate
+
+            # pin reflex version - no moving target
+            pip install reflex==0.2.7
+            pip install -r requirements.txt
+            reflex init
+            reflex export
+            for a in frontend.zip backend.zip; do
+              if unzip -t "$a"; then
+                echo "$a prepared as expected"
+              else
+                echo "ERROR: $a is not a valid zip file"
+                exit 1
+              fi
+            done
+
+            deactivate
+            popd
+          fi
diff --git a/.github/workflows/check_requirements.yml b/.github/workflows/check_requirements.yml
deleted file mode 100644
index 1f471301..00000000
--- a/.github/workflows/check_requirements.yml
+++ /dev/null
@@ -1,29 +0,0 @@
-name: check-requirements
-on:
-  push:
-    branches: [ main ]
-  pull_request:
-    branches: [ main ]
-
-jobs:
-  check-requirements:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-      - run: |
-          RC=0
-          for f in $(ls -1); do
-            if [[ -d $f ]]; then
-              if [[ ! -f $f/requirements.txt ]]; then
-                echo "$f/requirements.txt is MISSING"
-                RC=1
-                continue
-              fi
-              if !( grep -w "^reflex" $f/requirements.txt >/dev/null 2>&1 ); then
-                echo "$f/requirements.txt does not contain 'reflex'"
-                RC=1
-                continue
-              fi
-            fi
-          done
-          exit $RC
diff --git a/chatroom/.gitignore b/chatroom/.gitignore
index 4865abd0..6cc169e1 100644
--- a/chatroom/.gitignore
+++ b/chatroom/.gitignore
@@ -1,3 +1,4 @@
+*.db
 *.py[cod]
 .web
 __pycache__/
diff --git a/clock/.gitignore b/clock/.gitignore
index bf56ff42..f6711845 100644
--- a/clock/.gitignore
+++ b/clock/.gitignore
@@ -1,3 +1,4 @@
+*.db
 *.py[cod]
 .web
 __pycache__/
diff --git a/counter/.gitignore b/counter/.gitignore
index bf56ff42..f6711845 100644
--- a/counter/.gitignore
+++ b/counter/.gitignore
@@ -1,3 +1,4 @@
+*.db
 *.py[cod]
 .web
 __pycache__/
diff --git a/crm/.gitignore b/crm/.gitignore
index bf56ff42..f6711845 100644
--- a/crm/.gitignore
+++ b/crm/.gitignore
@@ -1,3 +1,4 @@
+*.db
 *.py[cod]
 .web
 __pycache__/
diff --git a/ecommerce/requirements.txt b/ecommerce/requirements.txt
index 210218f4..685db61e 100644
--- a/ecommerce/requirements.txt
+++ b/ecommerce/requirements.txt
@@ -1 +1,3 @@
-reflex>=0.2.0
\ No newline at end of file
+reflex>=0.2.0
+icecream==2.1.1
+pandas==2.1.0
\ No newline at end of file
diff --git a/fragments/.gitignore b/fragments/.gitignore
index bf56ff42..f6711845 100644
--- a/fragments/.gitignore
+++ b/fragments/.gitignore
@@ -1,3 +1,4 @@
+*.db
 *.py[cod]
 .web
 __pycache__/
diff --git a/nba/.gitignore b/nba/.gitignore
index bf56ff42..f6711845 100644
--- a/nba/.gitignore
+++ b/nba/.gitignore
@@ -1,3 +1,4 @@
+*.db
 *.py[cod]
 .web
 __pycache__/
diff --git a/snakegame/.gitignore b/snakegame/.gitignore
index bf56ff42..f6711845 100644
--- a/snakegame/.gitignore
+++ b/snakegame/.gitignore
@@ -1,3 +1,4 @@
+*.db
 *.py[cod]
 .web
 __pycache__/
diff --git a/tailwind/.gitignore b/tailwind/.gitignore
index bf56ff42..f6711845 100644
--- a/tailwind/.gitignore
+++ b/tailwind/.gitignore
@@ -1,3 +1,4 @@
+*.db
 *.py[cod]
 .web
 __pycache__/
diff --git a/todo/.gitignore b/todo/.gitignore
index bf56ff42..f6711845 100644
--- a/todo/.gitignore
+++ b/todo/.gitignore
@@ -1,3 +1,4 @@
+*.db
 *.py[cod]
 .web
 __pycache__/
diff --git a/translator/.gitignore b/translator/.gitignore
index bf56ff42..f6711845 100644
--- a/translator/.gitignore
+++ b/translator/.gitignore
@@ -1,3 +1,4 @@
+*.db
 *.py[cod]
 .web
 __pycache__/
diff --git a/traversal/.gitignore b/traversal/.gitignore
index bf56ff42..f6711845 100644
--- a/traversal/.gitignore
+++ b/traversal/.gitignore
@@ -1,3 +1,4 @@
+*.db
 *.py[cod]
 .web
 __pycache__/
diff --git a/twitter/.gitignore b/twitter/.gitignore
index bf56ff42..f6711845 100644
--- a/twitter/.gitignore
+++ b/twitter/.gitignore
@@ -1,3 +1,4 @@
+*.db
 *.py[cod]
 .web
 __pycache__/
diff --git a/upload/.gitignore b/upload/.gitignore
index bf56ff42..f6711845 100644
--- a/upload/.gitignore
+++ b/upload/.gitignore
@@ -1,3 +1,4 @@
+*.db
 *.py[cod]
 .web
 __pycache__/