Lucidly vs Ad Somnia
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Lucidly
This app uses AI and your smartwatch to detect REM sleep. It alerts you during this phase, allowing you to attempt lucid dreaming. It supports various induction techniques and offers two modes for sleep entry or REM detection.
- Real-time REM prediction
- AI-driven sleep stage detection
- Haptic and audible alerts
- Two operating modes (Inference & Hypnagogic)
- Adjustable prediction thresholds and alerts
- Session analytics and charts
- Apple HealthKit integration
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Lucidly collects health readings while you are sleeping via the watch. The readings are evaluated using artificial intelligence to determine when you have entered rapid eye movement (REM) of your sleep cycle. When REM is detected, the watch will alert you by triggering tactile and or audible signals. The user can attempt to recognize the signal in their dreaming state, or wake up and attempt to reenter REM via any lucid dreaming induction method of choice. Lucidly is the first and only application that specifically targets this phase of the sleep cycle using health readings in combination with machine learning and haptic signaling. The application works well and supports WILD, WBTB, DEILD and DILD induction techniques, and is available in two operating modes: Inference (REM detection and alerts), and hypnagogic (periodic haptics for sleep entry). Lucidly integrates with Apple's health kit for functionality. User permission is required to read and write data. REM prediction is performed by neural networks while the application is in session and the user is asleep. Lucidly has an overall accuracy > 80%. REM inference is an approximation and results may vary. Familiarity and some experience with lucid dreaming induction techniques is recommended before subscribing. Lucidly provides the following features: - Real time REM prediction with auto shut-off tactile and audible signaling. - REM stage determined by artificial neural networks (AI). - Greater than 80% model accuracy. - Two operating modes: Inference and hypnagogic. Modes can run in tandem or independently. - Ability to adjust prediction thresholds, haptics, session and alert durations. - Analytics and charts generated for each session with notification timestamps. - Seamlessly integrates and displays Sleep App metrics. - Ability to playback sessions and test different settings against REM detection models. - No registration required to use the application. - No personally identifying information is collected. - Subscriptions are auto-renewable and can be cancelled any time. - All plans include a FREE 7-day trial. =============== IN-APP PURCHASE: Monthly: $5.99 Yearly: $39.99 ($3.33 / mo) - Payment will be charged to iTunes account at confirmation of purchase. - Subscriptions automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. - Account will be charged for renewal within 24 hours prior to the end of the current period, and identify the cost of the renewal. - Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. =================== BEFORE YOU SUBSCRIBE: Lucidly requires Apple Watch for functionality. This application will not work without a paired Apple Watch and installed companion Lucidly WatchOS application. Familiarity and some experience with lucid dreaming induction techniques is recommended. Read our Privacy Policy at: https://lucidly-public.s3.us-east-2.amazonaws.com/privacy_lucidly.html Read our Terms of Service at: https://lucidly-public.s3.us-east-2.amazonaws.com/terms_lucidly.html
Ad Somnia
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What if you could wake up inside your dreams — and take control? Ad Somnia guides you into lucid dreaming: the extraordinary moment when you realize you're dreaming while still asleep. In a lucid dream, the impossible becomes real. Fly over cities, revisit forgotten places, meet anyone you can picture, or simply wander landscapes that exist nowhere but your own mind. Ad Somnia is built to make these experiences easier to reach — and to repeat, night after night. HOW IT WORKS Ad Somnia eases you into sleep with calming audio, then works quietly through the night. Using subtle Apple Watch vibrations timed to your sleep stages, it sends gentle cues designed to spark awareness inside the dream — without pulling you awake. Over time, your mind learns to recognize these signals and carry that awareness into the dream itself. WHAT YOU GET • Gentle sleep onset — drift off to calming, sleep-friendly audio • Smart Apple Watch cues — subtle vibrations timed to your REM sleep • Awareness training — short nightly pre-sleep sessions that strengthen your ability to go lucid • Unobtrusive by design — cues are crafted to guide, not wake • Build the habit — turn lucid dreaming from a rare accident into a repeatable skill WHY AD SOMNIA Lucid dreaming is a skill, and like any skill it grows with practice. Ad Somnia pairs a calming pre-sleep routine with precisely timed cues so every night moves you closer to your next lucid dream. Start your session tonight. Fall asleep peacefully. And let Ad Somnia guide you toward your first lucid dream. — Ad Somnia is intended for relaxation and personal exploration. It is not a medical device and is not intended to diagnose, treat, cure, or prevent any condition.
Screenshots
Verdict
The clearest difference is in-app purchases: Ad Somnia at none against Lucidly's 2. Lucidly's advantage is device support (4 vs 2) and iOS requirement (13.4 vs 17.6). 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. Lucidly sells 2 in-app purchases, starting at $5.99 per month. Ad Somnia asks for nothing beyond the download.
| Parameter | Lucidly | Ad Somnia |
|---|---|---|
| Price | Free | Free |
| Rating | 3.3 (18 ratings) — better | — |
| Positive reviews | 43.8% of reviews | — |
| Number of ratings | 18 — better | — |
| Update frequency | Weekly | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, Apple Watch |
| Requires iOS | 13.4 — better | 17.6 |
| Further details — not scored | ||
| Size | 110 MB | 13 MB |
| Age rating | 9+ | 4+ |
| Developer | 5Path LLC | Arsenii Prostakov |
In-app purchases
Lucidly
- Monthly Access7 Days trial$5.991 Month
- Annual Access7 Days trial$39.991 Year
Ad Somnia
No in-app purchases







