Nixd vs DD
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Nixd
This app helps you quit vaping with tools to track your progress, manage cravings, and visualize your body's recovery. It offers guided exercises, motivational content, and health timelines to support your journey to becoming nicotine-free.
- Track quit streak and money saved
- Manage cravings with guided exercises
- Visualize real-time body healing timeline
- Measure lung capacity with Breath Score
- Daily motivational content
- Morning check-ins and streak protection
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Quit vaping for good. Nixd is your personal quit-vaping hub where you can track your streak, crush cravings, and watch your body heal in real time. Whether you're quitting cold turkey or cutting back, Nixd gives you the tools, motivation, and structure to finally break free from nicotine. **WHY NIXD WORKS** TRACK YOUR STREAK Watch your quit streak grow day by day. See your money saved, cravings resisted, and time reclaimed — all on one clean dashboard. CRUSH CRAVINGS IN THE MOMENT When urges hit, Nixd has your back. Guided breathing exercises, craving timers, distraction tools, and a personal "why I quit" recall — everything you need to ride it out. WATCH YOUR BODY HEAL Follow a real-time health timeline based on medical research. From 20 minutes to 1 year, see exactly how your body is recovering — and unlock milestones along the way. TEST YOUR LUNG CAPACITY Measure your breath strength with Breath Score. Track your lung recovery over time and see the real, measurable difference quitting makes. DAILY MOTIVATION Fresh motivational content every day to keep you focused and remind you why you started this journey. STAY ACCOUNTABLE Morning check-ins, smart notifications, and streak protection keep you on track — even on the tough days. SUBSCRIPTION INFORMATION A Nixd subscription is required to access all features and content. Plans: $49.99/year (with 3-day free trial), $6.99/month, or $99.99 lifetime. Payment will be charged to your Apple ID account at confirmation of purchase. Subscriptions automatically renew unless turned off in your Apple ID Account Settings at least 24 hours before the current period ends. If you subscribe before your free trial ends, the remaining trial period will be forfeited. **DISCLAIMER: Nixd is not medical advice. Consult a healthcare professional for medical guidance.** Terms of Use — https://nixd.vercel.app/terms Privacy Policy — https://nixd.vercel.app/privacy Questions? Contact nixdapp@gmail.com
DD
A private wellness companion for veterans managing PTSD and using cannabis. It offers daily symptom tracking, cannabis session logging, and evidence-based coping tools. All data stays on your device, with no accounts or ads.
- Daily PTSD symptom check-ins
- Cannabis session logging
- Personalized insights and charts
- Evidence-based coping tools
- Tolerance break tracker
- Direct access to Veterans Crisis Line
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DD420 is a private wellness companion for veterans managing PTSD who also use cannabis for symptom relief. No judgment. No politics. Just tools. Your data never leaves your device. No accounts. No ads. No one is watching. DAILY CHECK-IN Track your PTSD symptoms using the same four clusters the VA uses — Intrusion, Avoidance, Mood & Thinking, and Alertness — in a guided, one-step-at-a-time flow built to feel less overwhelming. Rate each area honestly, log your mood and sleep, and note what triggered you. Takes less than two minutes, and your progress saves automatically if you get interrupted. Over time, your check-ins build a picture of how you're actually doing — not how you think you're doing. CANNABIS SESSION LOG Log each session with strain, method, THC and CBD content, timing, and — most importantly — why you used it and whether it helped. Select from 12 veteran-specific conditions including PTSD symptoms, chronic pain, sleep and insomnia, nightmares, anxiety, hyperarousal, and more. Each condition has its own curated list of effects to track. You'll start to see which strains, methods, and dosages actually move the needle for your specific symptoms. INSIGHTS Charts built from your own data. See your symptom severity trend over time, which PTSD clusters affect you most, how sleep quality relates to your symptom scores, how cannabis use correlates with next-day symptoms, and which conditions you use most. The more you log, the clearer the patterns become. COPING TOOLS Evidence-based tools organized by what you need right now. Breathing exercises, grounding techniques, progressive muscle relaxation, sleep visualization, and urge surfing — available any time, no subscription required. TOLERANCE BREAK TRACKER Set a break goal, track your progress day by day, and get coping prompts for cravings. Includes plain-language education on what tolerance is and what to expect during a break. 100% FREE Every feature in DD420 is free. Always. No subscriptions, no locked features, no paywalls. If you want to support development, an optional one-time tip ("Buy Me a Bag") is available in Settings — never required. BUILT FOR VETERANS Veterans Crisis Line: 988, press 1 — call or text directly from the app, one tap, any time. Chat: veteranscrisisline.net DD420 is not affiliated with the VA or DoD. It is not a medical app and does not diagnose or treat any condition. All data is stored on your device only.
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Verdict
The clearest difference is rating: DD at 5.0 against Nixd's 1.0. DD also leads on monetization model (free vs subscription) and ratings volume (15 vs 2). Nixd's advantage is iOS requirement (15.1 vs 17.6). 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. Nixd sells 3 in-app purchases, starting at $6.99 per month and DD sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
DD holds the better App Store score, 5.0 against 1.0. That said, the two scores are not equally well evidenced: DD has 15 ratings behind it against 2, so its average is the more settled of the two.
| Parameter | Nixd | DD |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (2 ratings) | 5.0 (15 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 2 | 15 — better |
| Update frequency | — | Every 4 days |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Subscription | Free — better |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.1 — better | 17.6 |
| Further details — not scored | ||
| Size | 38 MB | 20 MB |
| Age rating | 12+ | 17+ |
| Developer | LUCAS CAMPOLINA RIBEIRO | Shawn Wright |
In-app purchases
Nixd
- Monthly$6.991 Month
- Annual3 Days trial$49.991 Year
- Lifetime$99.99
DD
- Coffee Tip$2.99
- Lunch Tip$4.99
- Hero Tip$9.99









