diff --git a/sphaira/source/ui/menus/appstore.cpp b/sphaira/source/ui/menus/appstore.cpp
index 52dda1e..dab06f2 100644
--- a/sphaira/source/ui/menus/appstore.cpp
+++ b/sphaira/source/ui/menus/appstore.cpp
@@ -590,6 +590,14 @@ auto InstallApp(ProgressBox* pbox, const Entry& entry) -> bool {
     return true;
 }
 
+// case-insensitive version of str.find()
+auto FindCaseInsensitive(std::string_view base, std::string_view term) -> bool {
+    const auto it = std::search(base.cbegin(), base.cend(), term.cbegin(), term.cend(), [](char a, char b){
+        return std::toupper(a) == std::toupper(b);
+    });
+    return it != base.cend();
+}
+
 } // namespace
 
 EntryMenu::EntryMenu(Entry& entry, const LazyImage& default_icon, Menu& menu)
@@ -838,12 +846,6 @@ void EntryMenu::SetIndex(s64 index) {
     }
 }
 
-auto toLower(const std::string& str) -> std::string {
-	std::string lower;
-	std::transform(str.cbegin(), str.cend(), std::back_inserter(lower), tolower);
-	return lower;
-}
-
 Menu::Menu(const std::vector<NroEntry>& nro_entries) : MenuBase{"AppStore"_i18n}, m_nro_entries{nro_entries} {
     fs::FsNativeSd fs;
     fs.CreateDirectoryRecursively("/switch/sphaira/cache/appstore/icons");
@@ -1293,12 +1295,11 @@ void Menu::SetSearch(const std::string& term) {
 
     m_search_term = term;
     m_entries_index_search.clear();
-    const auto query = toLower(m_search_term);
-    const auto npos = std::string::npos;
+    const auto query = m_search_term;
 
     for (u64 i = 0; i < m_entries.size(); i++) {
         const auto& e = m_entries[i];
-        if (toLower(e.title).find(query) != npos || toLower(e.author).find(query) != npos || toLower(e.details).find(query) != npos || toLower(e.description).find(query) != npos) {
+        if (FindCaseInsensitive(e.title, query) || FindCaseInsensitive(e.author, query) || FindCaseInsensitive(e.description, query)) {
             m_entries_index_search.emplace_back(i);
         }
     }
@@ -1327,10 +1328,11 @@ void Menu::SetAuthor() {
 
     m_author_term = m_entries[m_entries_current[m_index]].author;
     m_entries_index_author.clear();
+    const auto query = m_author_term;
 
     for (u64 i = 0; i < m_entries.size(); i++) {
         const auto& e = m_entries[i];
-        if (e.author.find(m_author_term) != std::string::npos) {
+        if (FindCaseInsensitive(e.author, query)) {
             m_entries_index_author.emplace_back(i);
         }
     }