I Will Train Today vs Vitamin D Sun Tracker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
I Will Train Today
This app helps clients of a specific fitness program stay on track with healthy habits. It sends reminders and prompts users to confirm compliance with their coach's directives. It also integrates with Apple Health to import activity data.
- Habit compliance reminders
- Coach-assigned healthy habits
- Yes/No compliance prompts
- HealthKit activity data import
- Push notifications
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The I Will Train Today app is designed for clients of trainers who have enrolled in the I Will Train Today program. The app will send push notifications and prompt clients to answer yes/no question in regards to comply with healthy habits sent by your coach. WHO CAN USE THE APP Clients can only use the app if they are working with a I Will Train Today coach. If you are a I Will Train Today client, please contact your coach to receive your invite and login credentials to be able to use this app. The I Will Train Today app allows access to HealthKit, allowing clients to automatically pull in their activity and steps data from Apple Health to their app.
Vitamin D Sun Tracker
This app estimates your Vitamin D intake from sun exposure and supplements. It provides real-time UV index, weather, and personalized guidance on optimal sun times and duration to prevent sunburn. Track your progress with historical data and insights.
- Real-time Vitamin D estimates
- Live UV Index and weather integration
- Personalized sun timer with sunburn guidance
- 48-hour UV forecast for optimal exposure
- Supplement and cofactor tracking
- Historical data and trend analysis
- Optional Apple Health integration
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Vitamin D is the easiest deficiency to fix, but the hardest to track. Bask estimates the Vitamin D you get from sun exposure and supplements, so you can stop guessing and start hitting your goal. Bask is a sun tracker and sun timer that reads the sky, live UV Index, weather, your skin, and what you're wearing to tell you the best time to step outside and exactly how long to stay. SUN SESSIONS + SUN SAFETY - Real-time Vitamin D estimates from our live UV Index, UV tracker, weather, and our sun tracker algorithm - Built-in sun timer with time-to-sunburn guidance so you never overdo it - Time-to-sunburn timer can assist you during your tanning sessions. - Live Activities keep your session on the Lock Screen (iOS 16.1+) FIND YOUR BEST SUN WINDOWS - 48-hour UV forecast of your optimal exposure times with our sun tracker - Get alerts right before your best Vitamin D window opens SUPPLEMENTS + COFACTORS - Quick-log common vitamin D doses in a tap with our vitamin tracker - Track magnesium & vitamin K2 with bite-size education cards HISTORY, STREAKS & INSIGHTS - A clean timeline of every sun exposure session and supplementation. - Track Vitamin D labs to see the impact of your sun exposure and supplement habits. - 7 / 30 / 90-day trends to watch your Vitamin D levels climb PRIVATE BY DESIGN - Your data stays on your device - Optional Apple Health integration - Optional opt-in leaderboard Bask is for educational and wellness tracking only and does not provide medical advice. https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: I Will Train Today at none against Vitamin D Sun Tracker's 4. I Will Train Today also leads on rating (5.0 vs 4.8). Vitamin D Sun Tracker's advantage is update cadence (weekly vs monthly) and ratings volume (30 vs 2). On price, 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
Both are free to download. Vitamin D Sun Tracker sells 4 in-app purchases, starting at $4.99 per month. I Will Train Today asks for nothing beyond the download.
I Will Train Today holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Vitamin D Sun Tracker has 30 ratings behind it against 2, so its average is the more settled of the two.
I Will Train Today ships an update monthly, Vitamin D Sun Tracker weekly. The most recent releases landed on November 3, 2026 and November 9, 2026 respectively.
| Parameter | I Will Train Today | Vitamin D Sun Tracker |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | 4.8 (30 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 2 | 30 — better |
| Update frequency | Monthly | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 42 MB | 42 MB |
| Age rating | 4+ | 17+ |
| Developer | I Will Train, LLC (USA) | Greycloud LLC |
Customer experience
I Will Train Today
Vitamin D Sun Tracker
In-app purchases
I Will Train Today
No in-app purchases
Vitamin D Sun Tracker
- Monthly$4.991 Month
- Yearly3 Days trial$24.991 Year
- Yearly3 Days trial$29.991 Year
- Lifetime$79.99
Questions
Is I Will Train Today free?
Is Vitamin D Sun Tracker free?
Which has better reviews, I Will Train Today or Vitamin D Sun Tracker?
Do I Will Train Today or Vitamin D Sun Tracker have ads?
Which is updated more often, I Will Train Today or Vitamin D Sun Tracker?
Other comparisons
