Flat Habits vs Sunbathe
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Flat Habits
Track daily or weekly habits with a focus on privacy and ease of use. Receive timely notifications and quickly log progress directly from alerts. Review your streaks and commitment, with options for offline use and data export.
- Set daily/weekly habits
- Due habit notifications
- Quick notification actions
- Review day streaks
- Offline use
- Export habit data
- Org mode compatible
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A habit tracker that gets out of your way: • Set your daily or weekly habits • Get notified when habits are due • Use notification actions for quick access • Review your day streak or commitment • Search or filter habits • Keep fully offline or save elsewhere • Export your habit data at any time • Set to dark or light mode • iPad-friendly Power users: • Your habits saved to plain text • Org mode (orgmode.org) compatible • View and edit from your text editor: Emacs, Vim, VSCode... • Share/sync file with your Mac or other iPhone apps
Sunbathe
This app helps you understand your vitamin D needs and how to get enough through safe sun exposure. It calculates optimal sunning times and duration based on your location to prevent deficiency and related health issues.
- Vitamin D deficiency information
- Optimal sun exposure timing
- Personalized duration calculations
- Location-based recommendations
- Health benefit insights
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Getting enough vitamin D is crucial for proper functioning of the body. However, half of the population has insufficient levels of vitamin D. This can lead to various health problems such as osteoporosis, cancer, depression, muscle weakness or even death. And obviously, we don't want that for you. Vitamin D can be obtained through three methods: sun exposure, diet, or supplementation. Can you guess which method is the best? If you chose method one, you are correct. With this goal in mind, we have created Sunbathe—a simple application that addresses the following questions: — Can I get sufficient vitamin D in my location? — What is the optimal time to obtain enough vitamin D? — How much time do I need?
Screenshots
Verdict
The clearest difference is price: Sunbathe at Free against Flat Habits's $5.99. Sunbathe also leads on review sentiment (100% vs 88%). Flat Habits's advantage is in-app purchases (none vs 1) and update cadence (every 9 days vs every 3 weeks). On ads, device support and iOS requirement 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
Sunbathe is free to download; Flat Habits costs $5.99 up front. Sunbathe sells 1 in-app purchase, starting at $3.99 per month. Flat Habits asks for nothing beyond the download.
Flat Habits ships an update every 9 days, Sunbathe every 3 weeks. The most recent releases landed on October 15, 2026 and October 7, 2026 respectively.
| Parameter | Flat Habits | Sunbathe |
|---|---|---|
| Price | $5.99 | Free — better |
| Rating | 4.9 (57 ratings) — better | — |
| Positive reviews | 87.5% of reviews | 100.0% of reviews — better |
| Number of ratings | 57 — better | — |
| Update frequency | Every 9 days — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 2 MB | 43 MB |
| Age rating | 4+ | 4+ |
| Developer | Xenodium Ltd. | Julia Alvarez de Eulate Sainz |
Customer experience
Flat Habits
Sunbathe
In-app purchases
Flat Habits
No in-app purchases
Sunbathe
- Sunbathe Premium$3.991 Month
