diff --git a/app/models.py b/app/models.py
index 1d9f5bd0..f238f642 100644
--- a/app/models.py
+++ b/app/models.py
@@ -1802,6 +1802,10 @@ class AppleSubscription(Base, ModelMixin):
 
     plan = sa.Column(sa.Enum(PlanEnum), nullable=False)
 
+    # to know what subscription user has bought
+    # e.g. io.simplelogin.ios_app.subscription.premium.monthly
+    product_id = sa.Column(sa.String(256), nullable=True)
+
     user = orm.relationship(User)
 
     def is_valid(self):
diff --git a/migrations/versions/2021_123016_d8a3dfe674f2_.py b/migrations/versions/2021_123016_d8a3dfe674f2_.py
new file mode 100644
index 00000000..dcbd7d9f
--- /dev/null
+++ b/migrations/versions/2021_123016_d8a3dfe674f2_.py
@@ -0,0 +1,29 @@
+"""empty message
+
+Revision ID: d8a3dfe674f2
+Revises: ad467baf7ec8
+Create Date: 2021-12-30 16:16:33.088147
+
+"""
+import sqlalchemy_utils
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = 'd8a3dfe674f2'
+down_revision = 'ad467baf7ec8'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('apple_subscription', sa.Column('product_id', sa.String(length=256), nullable=True))
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_column('apple_subscription', 'product_id')
+    # ### end Alembic commands ###