Level 1.3 makes a good sound-level meter into a useful one.

• Session Leq — the energy-average level pros and regulators quote — sits beside the live number, and resets when you clear Max.
• Reference signals built in: pink noise, white noise, and octave-band tones from 31.5 Hz to 16 kHz. All level-matched, so switching doesn't jump the meter. The 1 kHz tone pairs with a 94 dB acoustic calibrator. Long-press the play button (or use Settings) to switch.
• Calibrated-mic support expanded: alongside the Dayton iMM-6C, Level now imports cal files for miniDSP UMIK-1, UMIK-2, EARS, Behringer ECM8000, and REW exports. Frequency correction is applied; with a 1 kHz sensitivity in the file, absolute level is anchored to true SPL.
• Cleaner look: white type, an orange meter bar, one confident color story throughout — the color-theme setting has retired.
• Full VoiceOver support — the meter announces cleanly for eyes-off use.

Under the hood: adopted Swift 6 (with fixes for a crash the play button could trigger under strict concurrency), safer cal-file imports, and a raft of small hardening from an adversarial review.