Helys vs Boost
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Helys
Read full descriptionHide full description
I am Helys, your companion for maintaining optimal vitamin D levels and help you create a healthy and effective habit of safe sun exposure. I am here to empower you and help you harness the power of sunlight for your overall well-being. Main Features: — Vitamin D Tracking I use a scientific formula which considers your skin type, geographical location, time of day, weather conditions and UV index to provide personalized insights on safe sun exposure durations. — Personalized Sunscreen Reminders I will remind you to apply sunscreen based on your skin type and current UV index. — Progress Insights and Reports I want to take care of you and ensure you're meeting your recommended levels of vitamin D. — User-Friendly Interface I have an intuitive interface, which makes it simple and effortless to navigate and track your vitamin D levels. Disclaimer: I do not provide medical advice. Always consult with a healthcare professional for personalized guidance regarding your vitamin D levels and sun exposure habits.
Boost
Easily log your daily supplements and nutrition with gentle reminders and Apple Health sync. This app offers a clean, clutter-free interface for informed users who value privacy and simplicity in tracking their intake.
- Single-tap supplement check-off
- Log missed intakes from past days
- Apple Health sync
- Gentle reminders
- Planned daily intake overview
- Clean, clutter-free design
Read full descriptionHide full description
Boost is a lightweight supplement and nutrition tracker built for people who already know what they take, and just want a clean way to track it. No pushy recommendations, no marketplace, no complicated dashboards. Just simple logging, Apple Health sync, and smart reminders that help your routine stick. What you get: • Check off supplements with a single tap, from notifications, widgets, or Apple Watch. • Quickly log missed intakes from past days. • Apple Health sync for your intakes • Gentle reminders at your chosen times. • See your planned daily intake across all supplements and nutritions. • Clean design, zero clutter • Available in English, German, Spanish, French, and Italian Privacy, by design: • No selling of your data. • No third‑party ads or embedded supplement shop. • No fishy AI advices. • No pushy upsells or “personalized” recommendations. Who it’s for: • Informed users who want a reliable, lightweight tracker. • People who value privacy and simplicity over noise and “growth hacks.” Disclaimer: Boost does not provide medical advice. Always consult a qualified professional for personal guidance. Apples standard Terms of Use apply: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://justasimple.app/privacy
Screenshots
Verdict
The clearest difference is in-app purchases: Helys at none against Boost's 4. Helys also leads on iOS requirement (16.0 vs 18.0). Boost's advantage is update cadence (every 2 weeks vs every 3 months). On price, ads 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. Boost sells 4 in-app purchases, starting at $0.99 per month. Helys asks for nothing beyond the download.
Helys ships an update every 3 months, Boost every 2 weeks. The most recent releases landed on September 24, 2026 and September 28, 2026 respectively.
| Parameter | Helys | Boost |
|---|---|---|
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| Update frequency | Every 3 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone | iPhone |
| Requires iOS | 16.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 3 MB | 5 MB |
| Age rating | 12+ | 4+ |
| Developer | Antonio Palomba | Rene Fischer |
In-app purchases
Helys
No in-app purchases
Boost
- Monthly Support$0.991 Month
- 1 Cup of Coffee (Support)$1.99
- 1 Sandwich (Support)$4.99
- 1 Lunch (Support)$11.99









