SilverTimer vs Binaural Zen

Anyone who has ever dealt with the production of colloidal silver knows the "problem" based on the amount of water to be treated and the desired PPM to determine the required switch-on time for electrolysis. This app takes the determination of this value on the basis of tables and calculates it accordingly after entering the values for the water quantity and the PPM. After pressing the start button, a counter starts to run down. At the end, when the desired PPM are reached, you will receive a notification. The operation is largely self-explanatory. Apple Watch is also supported. If you have any questions, please visit my support page.

Binaural Zen — Sleep, Focus & Meditate Tune your mind with precision audio. Binaural Zen uses scientifically designed sound to guide your brain into the state you need — whether that's deep sleep, sharp focus, or calm meditation. HOW IT WORKS Binaural beats play two slightly different frequencies — one in each ear. Your brain perceives the difference as a subtle pulse, nudging your brainwaves toward a target state. Put on headphones, choose your type, and let the sound do the work. FIVE BRAINWAVE MODES δ Delta (0.1–4 Hz) Deep sleep, pain relief, and recovery. Let your mind fully switch off. θ Theta (4–7 Hz) REM sleep, deep relaxation, meditation, and creativity. The edge between waking and dreaming. α Alpha (8–13 Hz) Relaxed focus, stress reduction, and positive thinking. Calm and clear. β Beta (13–30 Hz) Focused attention, cognitive sharpness, and problem solving. Engaged and alert. γ Gamma (30–40 Hz) Peak awareness, memory recall, and high-level cognition. Flow state. THREE AMBIENT NOISE MODES W White Noise Consistent full-spectrum static. Masks distractions and promotes sustained focus. P Pink Noise Naturally balanced, like steady rain or a gentle breeze. The most popular choice for sleep. B Brown Noise Deep, rich rumble like distant thunder or ocean waves. Grounding and deeply calming. SOUND CONTROLS Each session is fully customisable: - Pulse — fine-tune the beat rate within your chosen brainwave band - Tone — shift the carrier pitch for warmth or brightness - Waveform — Sine, Triangle, or Sawtooth character - Space — reverb depth for a sense of room and atmosphere - Duration — set your session length up to 60 minutes HEALTH INTEGRATION Every completed session is automatically recorded to Apple Health as Mindful Minutes, building a picture of your practice over time. DESIGNED FOR FOCUS No accounts. No subscriptions. No distractions. Open the app, choose your state, and breathe. Headphones required for binaural beat effect. Ambient noise modes work on speakers.