diff --git a/maintainers/maintainer-list.nix b/maintainers/maintainer-list.nix
index e9b7126464e8..097fcf5c9147 100644
--- a/maintainers/maintainer-list.nix
+++ b/maintainers/maintainer-list.nix
@@ -14138,6 +14138,11 @@
     githubId = 61395246;
     name = "Lampros Pitsillos";
   };
+  langsjo = {
+    name = "langsjo";
+    github = "langsjo";
+    githubId = 104687438;
+  };
   larsr = {
     email = "Lars.Rasmusson@gmail.com";
     github = "larsr";
diff --git a/pkgs/by-name/lm/lmath/package.nix b/pkgs/by-name/lm/lmath/package.nix
new file mode 100644
index 000000000000..9b29d50f552d
--- /dev/null
+++ b/pkgs/by-name/lm/lmath/package.nix
@@ -0,0 +1,54 @@
+{
+  lib,
+  nix-update-script,
+  fetchurl,
+  appimageTools,
+  makeBinaryWrapper,
+}:
+let
+  pname = "lmath";
+  version = "1.10.15";
+  src = fetchurl {
+    url = "https://github.com/lehtoroni/lmath-issues/releases/download/v${version}/LMath_Linux_r${version}-release.AppImage";
+    hash = "sha256-JOV+g7izjctCkHl5q/9T2PSUZzPzVPisHppbPofVYy0=";
+  };
+
+  appimageContents = appimageTools.extractType2 {
+    inherit pname version src;
+  };
+in
+appimageTools.wrapType2 {
+  inherit pname version src;
+
+  nativeBuildInputs = [
+    makeBinaryWrapper
+  ];
+
+  # '--skip-updated-bundle-check' stops automatic updates from breaking the package
+  extraInstallCommands = ''
+    install -Dm 444 ${appimageContents}/lmath.desktop $out/share/applications/lmath.desktop
+    install -Dm 444 ${appimageContents}/lmath.png $out/share/icons/hicolor/512x512/apps/lmath.png
+
+    wrapProgram $out/bin/lmath \
+      --add-flags "--no-update-check"
+
+    substituteInPlace $out/share/applications/lmath.desktop \
+      --replace-fail 'Exec=AppRun' 'Exec=lmath'
+  '';
+
+  passthru.updateScript = nix-update-script {
+    extraArgs = [
+      "--version-regex"
+      "^r([0-9\.]*)"
+    ];
+  };
+
+  meta = {
+    description = "Simple notebook app with LaTeX capabilities";
+    homepage = "https://lehtodigital.fi/lmath/";
+    mainProgram = "lmath";
+    license = lib.licenses.unfree;
+    maintainers = with lib.maintainers; [ langsjo ];
+    platforms = [ "x86_64-linux" ];
+  };
+}