diff --git a/tools/memusage/main.c b/tools/memusage/main.c
new file mode 100644
index 0000000..9d34cc0
--- /dev/null
+++ b/tools/memusage/main.c
@@ -0,0 +1,72 @@
+#include "repl_tools.h"
+#include "toy_memory.h"
+#include "toy_console_colors.h"
+#include "lib_runner.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+
+//tracker allocator
+int currentMemoryUsed = 0;
+int maxMemoryUsed = 0;
+int memoryAllocCalls = 0;
+
+static void* trackerAllocator(void* pointer, size_t oldSize, size_t newSize) {
+	if (newSize == 0 && oldSize == 0) {
+		//causes issues, so just skip out with a NO-OP
+		return NULL;
+	}
+
+	memoryAllocCalls++;
+
+	//track the changes
+	currentMemoryUsed = currentMemoryUsed - oldSize + newSize;
+	maxMemoryUsed = currentMemoryUsed > maxMemoryUsed ? currentMemoryUsed : maxMemoryUsed;
+
+	if (newSize == 0) {
+		free(pointer);
+
+		return NULL;
+	}
+
+	void* mem = realloc(pointer, newSize);
+
+	if (mem == NULL) {
+		fprintf(stderr, TOY_CC_ERROR "[tracker] Memory allocation error (requested %d for %ld, replacing %d)\n" TOY_CC_RESET, (int)newSize, (long int)pointer, (int)oldSize);
+		exit(-1);
+	}
+
+	return mem;
+}
+
+int main(int argc, char* argv[]) {
+	if (argc <= 1) {
+		return -1;
+	}
+
+	//setup for runner
+	Toy_initDriveDictionary();
+
+	Toy_Literal driveLiteral = TOY_TO_STRING_LITERAL(Toy_createRefString("scripts"));
+	Toy_Literal pathLiteral = TOY_TO_STRING_LITERAL(Toy_createRefString("scripts"));
+
+	Toy_setLiteralDictionary(Toy_getDriveDictionary(), driveLiteral, pathLiteral);
+
+	Toy_freeLiteral(driveLiteral);
+	Toy_freeLiteral(pathLiteral);
+
+	Toy_setMemoryAllocator(trackerAllocator);
+
+	//run memory tests
+	for (int fileCounter = 1; fileCounter < argc; fileCounter++) {
+		Toy_runSourceFile(argv[fileCounter]);
+	}
+
+	//lib cleanup
+	Toy_freeDriveDictionary();
+
+	//report output
+	printf("Memory report: %d max bytes, %d calls\n", maxMemoryUsed, memoryAllocCalls);
+
+	return 0;
+}
diff --git a/tools/memusage/makefile b/tools/memusage/makefile
new file mode 100644
index 0000000..8de4c4b
--- /dev/null
+++ b/tools/memusage/makefile
@@ -0,0 +1,42 @@
+CC=gcc
+
+TOY_OUTDIR=out
+
+IDIR+=. ../../source
+CFLAGS+=$(addprefix -I,$(IDIR)) -g -Wall -W -Wno-unused-parameter -Wno-unused-function -Wno-unused-variable
+LIBS+=-ltoy
+
+ODIR = obj
+SRC = $(wildcard *.c)
+OBJ = $(addprefix $(ODIR)/,$(SRC:.c=.o))
+OUTNAME=toy
+OUT=../../$(TOY_OUTDIR)/memusage
+
+all:
+	cp $(shell find ../../repl/repl_tools*) .
+	cp $(shell find ../../repl/lib*) .
+	$(MAKE) build
+
+build: $(OBJ)
+	echo $(OBJ)
+ifeq ($(shell uname),Darwin)
+	cp $(PWD)/$(TOY_OUTDIR)/lib$(OUTNAME).dylib /usr/local/lib/
+	$(CC) -DTOY_IMPORT $(CFLAGS) -o $(OUT) $(OBJ) $(LIBS)
+else
+	$(CC) -DTOY_IMPORT $(CFLAGS) -o $(OUT) $(OBJ) -Wl,-rpath,. -L$(realpath $(shell pwd)/../../$(TOY_OUTDIR)) $(LIBS)
+endif
+
+$(OBJ): | $(ODIR)
+
+$(ODIR):
+	mkdir $(ODIR)
+
+$(ODIR)/%.o: %.c
+	$(CC) -c -o $@ $< $(CFLAGS)
+
+.PHONY: clean
+
+clean:
+	$(RM) -r $(ODIR)
+	$(RM) $(shell find ./repl_tools*)
+	$(RM) $(shell find ./lib*)
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