diff --git a/build.rs b/build.rs
index 093db1d..7cbb768 100644
--- a/build.rs
+++ b/build.rs
@@ -8,6 +8,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
         "proto/ratings_features_app.proto",
         "proto/ratings_features_chart.proto",
         "proto/ratings_features_user.proto",
+        "proto/ratings_features_common.proto",
     ];
 
     tonic_build::configure()
diff --git a/proto/ratings_features_app.proto b/proto/ratings_features_app.proto
index e6494e4..ac40cff 100644
--- a/proto/ratings_features_app.proto
+++ b/proto/ratings_features_app.proto
@@ -2,6 +2,8 @@ syntax = "proto3";
 
 package ratings.features.app;
 
+import "ratings_features_common.proto";
+
 service App {
   rpc GetRating (GetRatingRequest) returns (GetRatingResponse) {}
 }
@@ -11,20 +13,5 @@ message GetRatingRequest {
 }
 
 message GetRatingResponse {
-  Rating rating = 1;
-}
-
-message Rating {
-  string snap_id = 1;
-  uint64 total_votes = 2;
-  RatingsBand ratings_band = 3;
-}
-
-enum RatingsBand {
-  VERY_GOOD = 0;
-  GOOD = 1;
-  NEUTRAL = 2;
-  POOR = 3;
-  VERY_POOR = 4;
-  INSUFFICIENT_VOTES = 5;
+  ratings.features.common.Rating rating = 1;
 }
diff --git a/proto/ratings_features_chart.proto b/proto/ratings_features_chart.proto
index b1306ef..19f39d3 100644
--- a/proto/ratings_features_chart.proto
+++ b/proto/ratings_features_chart.proto
@@ -2,6 +2,8 @@ syntax = "proto3";
 
 package ratings.features.chart;
 
+import "ratings_features_common.proto";
+
 service Chart {
   rpc GetChart (GetChartRequest) returns (GetChartResponse) {}
 }
@@ -16,11 +18,8 @@ message GetChartResponse {
 }
 
 message ChartData {
-  string app = 1;
-  uint64 total_up_votes = 2;
-  uint64 total_down_votes = 3;
-  float rating = 4;
-  RatingsBand rating_band = 5;
+  float raw_rating = 1;
+  ratings.features.common.Rating rating = 2;
 }
 
 enum Timeframe {
@@ -28,12 +27,3 @@ enum Timeframe {
   TIMEFRAME_WEEK = 1;
   TIMEFRAME_MONTH = 2;
 }
-
-enum RatingsBand {
-  VERY_GOOD = 0;
-  GOOD = 1;
-  NEUTRAL = 2;
-  POOR = 3;
-  VERY_POOR = 4;
-  INSUFFICIENT_VOTES = 5;
-}
diff --git a/proto/ratings_features_common.proto b/proto/ratings_features_common.proto
new file mode 100644
index 0000000..84a53d5
--- /dev/null
+++ b/proto/ratings_features_common.proto
@@ -0,0 +1,18 @@
+syntax = "proto3";
+
+package ratings.features.common;
+
+message Rating {
+  string snap_id = 1;
+  uint64 total_votes = 2;
+  RatingsBand ratings_band = 3;
+}
+
+enum RatingsBand {
+  VERY_GOOD = 0;
+  GOOD = 1;
+  NEUTRAL = 2;
+  POOR = 3;
+  VERY_POOR = 4;
+  INSUFFICIENT_VOTES = 5;
+}
diff --git a/src/features/app/infrastructure.rs b/src/features/app/infrastructure.rs
index 6e8f30e..e5071da 100644
--- a/src/features/app/infrastructure.rs
+++ b/src/features/app/infrastructure.rs
@@ -1,8 +1,8 @@
-use crate::app::AppContext;
+use crate::{app::AppContext, features::common::entities::Vote};
 use sqlx::Row;
 use tracing::error;
 
-use super::{entities::Vote, errors::AppError};
+use super::errors::AppError;
 
 pub(crate) async fn get_votes_by_snap_id(
     app_ctx: &AppContext,
diff --git a/src/features/app/interface.rs b/src/features/app/interface.rs
index 08b2935..7cc2687 100644
--- a/src/features/app/interface.rs
+++ b/src/features/app/interface.rs
@@ -8,8 +8,9 @@ use super::{service::AppService, use_cases};
 
 pub mod protobuf {
     pub use self::app_server::App;
-
+    tonic::include_proto!("ratings.features.common");
     tonic::include_proto!("ratings.features.app");
+
 }
 
 #[tonic::async_trait]
diff --git a/src/features/app/mod.rs b/src/features/app/mod.rs
index 6522bea..d273b6e 100644
--- a/src/features/app/mod.rs
+++ b/src/features/app/mod.rs
@@ -1,4 +1,3 @@
-pub mod entities;
 mod errors;
 mod infrastructure;
 pub mod interface;
diff --git a/src/features/app/use_cases.rs b/src/features/app/use_cases.rs
index e36bdf1..c821620 100644
--- a/src/features/app/use_cases.rs
+++ b/src/features/app/use_cases.rs
@@ -1,7 +1,7 @@
-use crate::app::AppContext;
+use crate::{app::AppContext, features::common::entities::Rating};
 use tracing::error;
 
-use super::{entities::Rating, errors::AppError, infrastructure::get_votes_by_snap_id};
+use super::{errors::AppError, infrastructure::get_votes_by_snap_id};
 
 pub async fn get_rating(app_ctx: &AppContext, snap_id: String) -> Result<Rating, AppError> {
     let votes = get_votes_by_snap_id(app_ctx, &snap_id)
diff --git a/src/features/app/entities.rs b/src/features/common/entities.rs
similarity index 98%
rename from src/features/app/entities.rs
rename to src/features/common/entities.rs
index cda672d..9801597 100644
--- a/src/features/app/entities.rs
+++ b/src/features/common/entities.rs
@@ -1,6 +1,8 @@
 use sqlx::FromRow;
 
-use super::interface::protobuf;
+pub mod protobuf {
+    tonic::include_proto!("ratings.features.common");
+}
 
 const INSUFFICIENT_VOTES_QUANTITY: usize = 25;
 
diff --git a/src/features/common/mod.rs b/src/features/common/mod.rs
new file mode 100644
index 0000000..0b8f0b5
--- /dev/null
+++ b/src/features/common/mod.rs
@@ -0,0 +1 @@
+pub mod entities;
diff --git a/src/features/mod.rs b/src/features/mod.rs
index 836e47e..8663180 100644
--- a/src/features/mod.rs
+++ b/src/features/mod.rs
@@ -1,2 +1,3 @@
 pub mod app;
+mod common;
 pub mod user;