Sol vs LuminaLull
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
LuminaLull
This app uses AI to create personalized audio and light entrainment sessions for sleep, focus, and relaxation. It offers multiple entrainment methods, including unique synchronized photic light strobes via your iPhone flashlight, and tracks your progress privately on-device.
- AI-powered personalized sessions
- Photic entrainment with iPhone flashlight
- Binaural beats and isochronic tones
- Ambient soundscapes
- Save and share custom presets
- Progress tracking and data export
- On-device processing for privacy
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LuminaLull uses sound and light to help you relax, focus and fall asleep. AI RECOMMENDATIONS SUBSCRIPTION LuminaLull Premium is available as a monthly auto-renewing subscription with a 7-day free trial, or as a one-time lifetime purchase. Payment is charged to your Apple Account. The subscription renews automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your Apple Account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://nagohcreative.com/privacy Tell the app how you feel, like "I can't sleep tonight" or "I need deep focus for work," and get a suggested session with the frequency, duration and settings to use. Everything is generated on device with zero data collection. MULTIPLE ENTRAINMENT METHODS - Binaural beats (headphones recommended) - Isochronic tones that work with or without headphones - Photic mode: a gentle light pulse from your iPhone flashlight, synchronized to the same frequency as the audio, for a combined sound-and-light session SESSIONS FOR - Sleep (Delta) - Calm and meditation (Theta and Alpha) - Focus (Beta) - Mix in white, pink or brown noise SAFETY Do not use the light mode if you have epilepsy or are sensitive to flashing lights. Do not use while driving. LuminaLull is not a medical device.
Screenshots
Verdict
The clearest difference is in-app purchases: Sol at none against LuminaLull's 2. Sol also leads on device support (3 vs 1) and iOS requirement (14.0 vs 26.0). On price and ads 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. LuminaLull sells 2 in-app purchases, starting at $2.99 per month. Sol asks for nothing beyond the download.
| Parameter | Sol | LuminaLull |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.5 (2 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | — | Every 2 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 14.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 9 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | GridLights Company | Gregory Hogan |
In-app purchases
Sol
No in-app purchases
LuminaLull
- LuminaLull Monthly$2.991 Month
- LUMINALULLOTP$9.99









