Lunas vs PD
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Lunas
This app helps users improve their sleep and meditation practice with a simple interface. It offers customizable themes, a variety of sounds, and tools like a sleep timer and daily reminders. Track your meditation progress with detailed statistics.
- Sleep timer
- Meditation sounds
- Customizable themes
- Daily sleep reminders
- Meditation statistics
- Progress tracking
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The Official Lunas Sleep Gummies App! Lunas is a sleep and meditation app designed for those who strive to improve their sleep. Our app is free and offers no in-app purchases. Every future update, every change we make, and every feature we add will be entirely free for you. Users can select 1 of 3 themes; we do this to allow your app to calm you while fitting your aesthetic. We have a statistics feature that shows the following: Time meditating App opens Completed sessions Completion ratio Longest streak Current streak Additionally, we offer nine free sounds to meditate with, and more are on the way! Other features include a daily sleep reminder and sleep timer intervals from 1 minute to 1 hour. With minimal features, our app is designed to supplement your experience using our Lunas gummies. You can also open the app and start meditating, no complicated courses, no training, no gimmicks, locked features, no subscriptions. Sleep like a god, and welcome to the Lunas family :) Our privacy policy and terms can be viewed on refineryapps.com/privacy and refineryapps.com/terms, respectively.
PD
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A research study for people with Parkinson's Disease and their caregivers that integrates the Health app. Do you have Parkinson's Disease, or are you the caregiver of someone with PD and interested in participating in a research study? Then this study is for you! You can participate if you: have been diagnosed with Parkinson's disease or are the caregiver of someone diagnosed, are 18 years or older, speak English, own a smartphone, are willing to take part in this study that requires you to use mobile health technology for 6 weeks, are willing to take a Mini-Mental State Examination (MMSE)? You can not participate if you: have a major acute medical illness (in the past 6 months) (e.g. heart attack, stroke, alcoholic rehab), have been disabled by a major psychiatric disorder in the past 6 months (e.g., schizophrenia, bipolar disorder)?
Screenshots
Verdict
The clearest difference is update cadence: PD at every 2 weeks against Lunas's every 5 months. Lunas's advantage is iOS requirement (13.1 vs 15.5). 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.
Lunas ships an update every 5 months, PD every 2 weeks. The most recent releases landed on October 10, 2026 and September 21, 2026 respectively.
| Parameter | Lunas | PD |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 5 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.1 — better | 15.5 |
| Further details — not scored | ||
| Size | 59 MB | 133 MB |
| Age rating | 4+ | 12+ |
| Developer | Matthew Gallagher | WellAware Research LLC |
In-app purchases
Lunas
No in-app purchases
PD
No in-app purchases









