diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0c9ecfd..1c8c4dd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -118,6 +118,7 @@
 - Add utility to merge a list of android chunks and generate a speedscope result ([#531](https://github.com/getsentry/vroom/pull/531))
 - Remove unused legacy flamegraph code path. ([#533](https://github.com/getsentry/vroom/pull/533))
 - Remove generic metrics ingestion ([#534](https://github.com/getsentry/vroom/pull/534))
+- Add android chunk calltree implementation and signature definition to the chunk interface ([#536](https://github.com/getsentry/vroom/pull/536))
 - Update sentry-go dependency to v0.29.1 ([#535](https://github.com/getsentry/vroom/pull/535))
 - Lower number of concurrent reads ([#537](https://github.com/getsentry/vroom/pull/537))
 - Remove unused metrics summary kafka writer ([#538](https://github.com/getsentry/vroom/pull/538))
diff --git a/internal/chunk/android.go b/internal/chunk/android.go
index a2da10b..a001311 100644
--- a/internal/chunk/android.go
+++ b/internal/chunk/android.go
@@ -2,6 +2,7 @@ package chunk
 
 import (
 	"encoding/json"
+	"strconv"
 	"time"
 
 	"github.com/getsentry/vroom/internal/clientsdk"
@@ -53,8 +54,14 @@ func (c AndroidChunk) DurationMS() uint64 {
 	return uint64(time.Duration(c.DurationNS).Milliseconds())
 }
 
-func (c AndroidChunk) CallTrees() map[uint64][]*nodetree.Node {
-	return c.Profile.CallTrees()
+func (c AndroidChunk) CallTrees(_ *string) (map[string][]*nodetree.Node, error) {
+	callTrees := c.Profile.CallTrees()
+	stringThreadCallTrees := make(map[string][]*nodetree.Node)
+	for tid, callTree := range callTrees {
+		threadID := strconv.FormatUint(tid, 10)
+		stringThreadCallTrees[threadID] = callTree
+	}
+	return stringThreadCallTrees, nil
 }
 
 func (c AndroidChunk) SDKName() string {
diff --git a/internal/chunk/chunk.go b/internal/chunk/chunk.go
index cc715c8..196fcd6 100644
--- a/internal/chunk/chunk.go
+++ b/internal/chunk/chunk.go
@@ -4,6 +4,7 @@ import (
 	"fmt"
 
 	"github.com/getsentry/vroom/internal/frame"
+	"github.com/getsentry/vroom/internal/nodetree"
 	"github.com/getsentry/vroom/internal/platform"
 	"github.com/getsentry/vroom/internal/utils"
 )
@@ -21,6 +22,7 @@ type (
 		GetRetentionDays() int
 		GetOptions() utils.Options
 		GetFrameWithFingerprint(uint32) (frame.Frame, error)
+		CallTrees(activeThreadID *string) (map[string][]*nodetree.Node, error)
 
 		DurationMS() uint64
 		EndTimestamp() float64