Fast vs Nature
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Fast
Read full descriptionHide full description
Feel Better. Stay on Track. Your Fasting Journey, Made Simple. Build healthy habits and stay in tune with your bodyβwithout the clutter or complexity. This beautifully simple app helps you track intermittent fasting in a calm, intuitive way that fits effortlessly into your daily routine. Why Youβll Love It: β’ No accounts, no login, no tracking. Your data, your device. β’ Gentle, Simple Tracking: Start and stop fasts with just a tap. No distractions, just a clear view of your progress. β’ Apple Watch Ready: Track your fasts directly from your wristβeven without your phone nearby. β’ At-a-Glance Insights: Stay mindful of your fasts with elegant widgets on your iPhone and Apple Watch. β’ Private by Design: Your data is stored securely in your personal iCloud account. Nothing ever leaves your devices. Whether youβre fasting for wellness, focus, or energy, this app is your quiet companion on the journey.
Nature
Read full descriptionHide full description
Nature-Rx is a clinical evidence-based supplement database that puts peer-reviewed research at your fingertips. Search supplements, review drug interactions, explore dosing guidelines, and browse clinical studies β all backed by real data from sources like PubMed. **Evidence-Based Supplement Profiles** Browse detailed supplement entries with clinical data, evidence ratings, pharmacological reliability scores, and categorization across 18 supplement categories including Vitamins, Minerals, Adaptogens, and more. **Drug Interaction Checker** Look up known drug interactions for any supplement in the database. Each interaction includes severity ratings and clinical recommendations to help inform your conversations with healthcare providers. **Therapeutic Guide** Search by health condition to find evidence-graded dosing information across all supplements. Each indication includes dosage amounts, target populations, and evidence grades drawn from clinical literature. **Research Library** Browse and filter clinical studies linked to supplements, with evidence levels and source citations. Stay informed with the latest research backing each product. **Barcode Scanner and Drug Watchlist** Scan a supplement bottle's barcode to see its label and jump to matching supplement profiles, or scan your whole stack in one go. Add the medications you take to your watchlist, and Nature-Rx flags known interactions with them, including matches by drug class. **Personalized Features** Bookmark supplements and scanned products for quick access. Secure your account with Face ID or Touch ID. View your profile and manage preferences with ease. Privacy Policy: https://naturerx.app/privacy Terms of Use (EULA): https://naturerx.app/terms
Screenshots
Verdict
The clearest difference is in-app purchases: Fast at none against Nature's 2. Fast also leads on update cadence (every 2 weeks vs every 3 months). Nature's advantage is iOS requirement (15.0 vs 26.0). On price, ads and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Nature sells 2 in-app purchases, starting at $19.99 per 6 months. Fast asks for nothing beyond the download.
Fast ships an update every 2 weeks, Nature every 3 months. Both last shipped on October 30, 2026.
| Parameter | Fast | Nature |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks β better | Every 3 months |
| Ads | No | No |
| In-app purchases | No β better | Yes |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 26.0 | 15.0 β better |
| Further details β not scored | ||
| Size | 35 MB | 36 MB |
| Age rating | 4+ | 17+ |
| Developer | CodeHive | JP HowardMD Inc |
In-app purchases
Fast
No in-app purchases
Nature
- Premium Semiannual1 Month trial$19.996 Months
- Premium Annual2 Months trial$29.991 Year






