Binaural vs Sol
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Binaural
Generate binaural beats, isochronic tones, and noise for focus, rest, or practice. This audio tool runs offline and plays under other applications, allowing you to maintain your current activity.
- Binaural and isochronic beat modes
- Brown and pink noise generation
- 25 curated presets for various needs
- Plays audio under other apps
- Offline functionality
- Session timer with quick duration options
- Background audio and lock-screen controls
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Binaural is a focused beat and tone generator: binaural and isochronic beats, brown and pink noise, and 25 curated presets—built to start fast and run fully offline. NO SUBSCRIPTION Binaural is free to use. No account required. No streaming. Your session settings stay on your device. An audio tool for focus, rest and practice, not medical treatment. PLAYS UNDER ANY APP Keep your video, lecture or podcast going and add binaural beats underneath. WHAT YOU GET • Always-visible entrainment controls with binaural or isochronic modes • Brown and pink noise layered with your beat • 25 grouped presets for focus, relaxation, sleep, and more • Session timer with quick duration chips • Background audio and lock-screen controls FROM MEDITATION TREKS Binaural is the lightweight companion to Meditation Treks—the full guided meditation app with treks, nature, breathwork, and more. Try Meditation Treks from the About tab when you want the complete experience. Headphones recommended for binaural beats.
Sol
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Sol Spektrum is the companion app for the Sol Spektrum photonic stimulation device by GridLights — a portable, hexagonal light with 37 high-output LEDs that flicker at precise frequencies up to 50 Hz. Pair the app with your device over Wi-Fi or Bluetooth, then shape the light: • Journeys — guided light programs that move through frequencies over time, organized by intent: Waking Dreams, Focus, Relax, Sleep, Creativity, and High Cognition. • Sequencer — build your own ordered sequences of scenes, each with its own color, brightness, speed, and duration. • Live control — adjust frequency, brightness, and color in real time, with an on-screen preview of the device as it plays. • Device & updates — manage your Sol Spektrum and install firmware updates over the air. Sol Spektrum requires the Sol Spektrum hardware device to use. Photosensitivity warning: this device produces flickering and strobing light. Do not use it if you have photosensitive epilepsy or a history of seizures, and consult a medical professional if you are unsure.
Screenshots
Verdict
The clearest difference is iOS requirement: Sol at 14.0 against Binaural's 17.0. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Binaural | Sol |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (42 ratings) — better | — |
| Positive reviews | 73.7% of reviews | — |
| Number of ratings | 42 — better | — |
| Update frequency | Every 22 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Meditation Treks LLC | GridLights Company |
In-app purchases
Binaural
No in-app purchases
Sol
No in-app purchases
