diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..491f984
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,24 @@
+CFLAGS		+= -s -O3
+
+ifeq ($(shell uname -s), Darwin)
+  CC		= gcc-8
+  CXX		= g++-8
+else
+  CLIBS	+= -static
+endif
+
+all:  obj bin ReplaceLanguage
+
+ReplaceLanguage: ReplaceLanguage.o
+	 $(CXX) $(CFLAGS) -o bin/ReplaceLanguage obj/ReplaceLanguage.o $(CLIBS)
+ReplaceLanguage.o: ReplaceLanguage.cpp
+	 $(CXX) $(CFLAGS) -c ReplaceLanguage.cpp -o obj/ReplaceLanguage.o $(CLIBS)
+
+obj:
+	 mkdir -p obj
+bin:
+	 mkdir -p bin
+
+clean:
+	 rm obj/ReplaceLanguage.o bin/ReplaceLanguage
+	 
\ No newline at end of file
diff --git a/ReplaceLanguage-Mobile.cpp b/ReplaceLanguage-Mobile.cpp
new file mode 100644
index 0000000..104ba4b
--- /dev/null
+++ b/ReplaceLanguage-Mobile.cpp
@@ -0,0 +1,190 @@
+#include <string>
+#include <istream>
+#include <iostream>
+#include <fstream>
+#include <sstream>
+#include <vector>
+#include <map>
+#include <algorithm>
+#include <locale>
+
+struct DataRow {
+	unsigned long sheet;
+	unsigned long id1;
+	unsigned long id2;
+	unsigned long id3;
+	unsigned long id4;
+	std::wstring loc;
+
+	///overloading operator < because of std::sort function
+	bool operator < (const DataRow& row) const {
+		if (sheet == row.sheet) {
+			if (id1 == row.id1) {
+				if (id2 == row.id2) {
+					if (id3 == row.id3) {
+						return (id4 < row.id4);
+					}
+					return (id3 < row.id3);
+				}
+				return (id2 < row.id2);
+			}
+			return (id1 < row.id1);
+		}
+		return (sheet < row.sheet);
+	}
+
+	friend std::wistream& operator>>(std::wistream& in, DataRow& data);
+	friend std::wofstream& operator<<(std::wofstream& out, DataRow& data);
+};
+
+///overloading operator >>, so I can use it to read DataRow type
+std::wistream& operator>>(std::wistream& is, DataRow& data)
+{
+	is >> data.sheet;
+	is >> data.id1;
+	is >> data.id2;
+	is >> data.id3;
+	is >> data.id4;
+	is >> std::ws; //discard whitespace
+	std::getline(is, data.loc);
+
+	return is;
+}
+
+///overloading operator <<, so I can use it to write DataRow type
+std::wofstream& operator<<(std::wofstream& os, DataRow& data)
+{
+	os << data.sheet << L'\t';
+	os << data.id1   << L'\t';
+	os << data.id2   << L'\t';
+	os << data.id3   << L'\t';
+	os << data.id4   << L'\t';
+	os << data.loc;
+
+	return os;
+}
+
+
+int main(int argc, char *argv[])
+{
+	if (argc < 4)
+	{
+		std::cerr   << "Usage: " << argv[0] << " <replace> <original> <target>\n\n"
+					<< "<replace>\t: file which contains translated/modified strings\n"
+					<< "<original>\t: original file with string table\n"
+					<< "<target>\t: output file" << std::endl;
+		return 1;
+	}
+
+	std::string replace_name = argv[1];
+	std::string original_name = argv[2];
+	std::string target_name = argv[3];
+
+	std::ofstream file(target_name, std::ios::binary);
+	unsigned char BOM_UTF8[] = { 0xEF,0xBB,0xBF };
+	file.write((char*)BOM_UTF8, sizeof(BOM_UTF8));
+	file.close();
+
+	std::wifstream replace(replace_name, std::ios::binary);
+	if (replace.fail()){
+		std::cerr << "Error opening " << replace_name << std::endl;
+		return 1;
+	}
+
+	std::wifstream original(original_name, std::ios::binary);
+	if (original.fail()){
+		std::cerr << "Error opening " << original_name << std::endl;
+		return 1;
+	}
+
+	std::wofstream target(target_name, std::ios::binary);
+	if (target.fail()){
+		std::cerr << "Error opening " << target_name << std::endl;
+		return 1;
+	}
+
+	replace.ignore(3);
+	original.ignore(3);
+	target.seekp(3);
+
+	///create lookup table
+	std::vector<DataRow> lookup;
+	std::wstring row;
+
+	std::cout << "Reading \"" << replace_name << "\"..." ;
+	while (std::getline(replace, row)){
+		DataRow dataRow;
+		std::wstringstream ss;
+
+		ss.str(row);
+		ss >> dataRow;
+
+		lookup.push_back(dataRow);
+	}
+	std::cout << " (" << lookup.size() << " lines found)" << std::endl;
+
+	///sorting is necessary so I can speed up searching using a map (lookupHelper)
+	std::sort(lookup.begin(), lookup.end());
+
+	///lookupHelper is a map which assigns pair of pointers, start and end (something like row numbers),
+	///to the sheet number (first number on the row in text file)
+	std::map<int, std::pair<std::vector<DataRow>::iterator, std::vector<DataRow>::iterator> > lookupHelper;
+	std::vector<DataRow>::iterator it, first, last;
+	first = lookup.begin();
+	int sheet = first->sheet;
+	for (it = lookup.begin(); it != lookup.end(); ++it) {
+		last = it;
+		if (sheet < it->sheet){
+	        lookupHelper[sheet] = std::make_pair(first, --last); ///last is now the first line of the new sheet, so we need to get previous value
+			first = it;
+			sheet = it->sheet;
+	    }
+	}
+	lookupHelper[sheet] = std::make_pair(first, last); ///write the last one
+
+	//main loop
+	std::cout << "Copying lines from \"" << original_name << "\" to \"" << target_name << "\"..." << std::endl;
+
+	bool found = false;
+	unsigned int changed = 0, unchanged = 0;
+	std::map<int, std::pair<std::vector<DataRow>::iterator, std::vector<DataRow>::iterator> >::iterator iHelp; ///I love this type!
+
+	while (std::getline(original, row)){
+		DataRow originalRow;
+		std::wstringstream ss;
+
+		ss.str(row);
+		ss >> originalRow;
+
+		found = false;
+		iHelp = lookupHelper.find(originalRow.sheet);
+		if (iHelp != lookupHelper.end()){
+			it = iHelp->second.first;                  ///I don't want to search for key multiple times using map[key], so I'm using less comprehensible
+			while (it <= iHelp->second.second) {       ///dereferencing form iterator. It points to map pair<key, value> and I have stored in value
+				if (originalRow.sheet == it->sheet &&  ///another pair. It looks like this: pair<key, value<first, second>>
+					originalRow.id1 == it->id1 &&      ///Pair members are accessible as .first and .second, so I have to use: pointer->second.first
+					originalRow.id2 == it->id2 &&
+					originalRow.id3 == it->id3 &&
+					originalRow.id4 == it->id4){
+
+					found = true;
+					break;
+				} else {
+					it++;
+				}
+			}
+		}
+
+		if (found){
+			originalRow.loc = it->loc;
+			changed++;
+		} else {
+			unchanged++;
+		}
+		target << originalRow << '\n';
+	}
+
+	std::cout << "Processed lines: " << changed + unchanged <<  " (replaced: " << changed << ", original: " << unchanged << ")\nDone!" << std::endl;
+
+	return 0;
+}