INTERMISSIO vs SolGlow
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
INTERMISSIO
Track your intermittent fasting journey with customizable plans and clear progress indicators. Connect with Apple Health to monitor your health data alongside your fasting history. Enjoy widgets and Live Activities for at-a-glance updates.
- Customizable fasting plans (16:8, 18:6, OMAD, multi-day)
- Real-time timer with phase milestones
- Optional Apple Health integration
- Streak tracking and progress reports
- Home Screen and Lock Screen widgets
- Live Activities during active fasts
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INTERMISSIO helps you run intermittent fasting on your terms: pick a plan that fits your day, start the timer when you are ready, and stay oriented with clear progress toward your goal. PLANS AND RHYTHM Choose familiar time-restricted setups like 16:8, 18:6, 20:4, or OMAD, or work toward longer multi-day goals. Optional recurring schedule lines up eating and fasting windows, with notifications when you allow them. TIMER AND MILESTONES A single place to see elapsed time, what is left, and phase-style milestones along your fast so you always know where you are in the session. HEALTH AND PROGRESS Optionally connect Apple Health to keep weight and movement context next to your fasting history. Track streaks, review consistency, and export a simple progress report when you want a snapshot. WIDGETS AND LIVE ACTIVITIES Home Screen and Lock Screen widgets, plus Live Activities during an active fast, are available as a one-time Supporter unlock. Core fasting, the timer, Health connection, notifications, and progress inside the app stay free. INTERMISSIO is built to stay out of your way: fast to open, easy to read, and focused on the habit you are building. Privacy statement: https://pepper-technologies.nl/privacy-statement Terms of Use: https://pepper-technologies.nl/terms-of-use
SolGlow
This app automatically estimates your daily vitamin D intake based on sunlight exposure, skin type, and location. It provides real-time UV index, burn-safe time remaining, and integrates with Apple Watch for effortless tracking. Features include winter mode, supplement check-ins, and advanced planning tools for Pro users.
- Automatic vitamin D estimation
- Live UV index and IU-per-minute rate
- Burn-safe time remaining with alerts
- Winter Mode for low-sun periods
- Supplement check-in
- 7-day UV forecast (Pro)
- Trip Planner for jet lag (Pro)
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SolGlow turns your time outside into the number that matters: vitamin D — measured in IU, not just minutes. And it's automatic: your Apple Watch's daylight is credited to your estimate by itself — no logging, no GPS trail — and every number can show the exact math behind it. From your Time in Daylight, skin type, outfit, age, and your location's sun angle, SolGlow estimates the vitamin D you actually made today — and warns you before you burn. SUN TODAY, IN ONE ANSWER (NEW) • When today's vitamin D window opens — the same UV 3+ hours that call for sun protection • Your burn time, and the protection today's UV calls for: SPF, sunglasses, shade • Optional alerts when today's protection hours begin • Live UV index, one daily goal tuned to your life stage, and vitamin-D foods in your units SUN SAFETY THAT KNOWS YOU (NEW, FREE) • Sun Sensitivity: taking a medicine that can increase sun sensitivity? Every burn time gets a cautious margin • Snow, sand or water bounce extra UV at you — tell SolGlow and today's burn math adjusts • Monthly Skin Check: the ABCDE self-exam with a gentle reminder — a habit, never a diagnosis AUTOMATIC, AND YOU CAN SEE WHY (FREE) • True-D: SolGlow corrects the UV Index for ozone — sunburn UV isn't vitamin-D UV — and shows the cited step whenever it changes your number (Kazantzidis 2009) • Learn & Sources: plain-language guides to UV, sunscreen, winter and more, each with its studies • Ask Siri "How much sun did I get in SolGlow?" — plus Best Sun Window widgets for StandBy, Lock Screen, and Home Screen MADE FOR IPHONE DUO Open it and Today spreads into two columns, guides read like a book, and a live session stands up like a scoreboard on the picnic table. OWN THE WINTER • Winter Mode: when your latitude's noon sun can't make vitamin D, SolGlow shows where yours is coming from — and counts down to the sun's return • Free Winter Countdown widget and Apple Watch complication — works offline • Streak Shield: only physics can excuse a missed day • One-tap supplement check-in from a notification, widget, Siri, or your watch BRING YOUR HISTORY (FREE) • Import your Time in Daylight history from Apple Health in one tap — no account • Back up everything to one file and restore on a new phone SUN SESSIONS (PRO) • Direct Sun: a live burn budget that only counts down, and says plainly when to get out • Live Activity on your Lock Screen and Dynamic Island, with a sunscreen reapply timer • Morning Light, editable history, streaks, a shareable weekly recap — and the Apple Watch app PLAN AHEAD (PRO) • 7-day UV forecast with your personal best-sun windows • Annual sun plan and a jet-lag Trip Planner (timing guidance, not medical advice) KNOW YOUR LEVEL (PRO) • 25(OH)D serum estimate with a 12-week projection • Cofactors, supplement guidance, blood-test reminders, and a doctor-ready PDF/CSV report PRIVATE BY DESIGN No account. No sign-up. No analytics. No ads. Your health data, profile, and location history never leave your device — the only network call fetches a UV forecast (coordinates only, no identifier). Optional backup goes to your own iCloud, never to us. FREE TO TRY — THEN PICK YOUR PLAN Every feature free for 14 days. Then choose your SolGlow Pro: $9.99 per year, auto-renewing until you cancel — or Lifetime: one purchase, yours forever, Family Sharing included. The free tier keeps today's tracking and all safety features, always. SolGlow estimates are educational, not medical advice. Always consult your clinician about vitamin D supplementation and blood testing. SolGlow Pro Annual is an auto-renewing subscription: $9.99 per year, charged to your Apple ID at purchase confirmation. It renews unless cancelled at least 24 hours before the period ends. Manage or cancel in your App Store settings. SolGlow Pro Lifetime is a one-time purchase that never renews. Privacy Policy: https://twisteddatastudios.com/privacy.html Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is review sentiment: INTERMISSIO at 100% against SolGlow's 50%. INTERMISSIO also leads on rating (5.0 vs 3.7). SolGlow's advantage is device support (3 vs 1) and ratings volume (3 vs 1). On price, update cadence, ads and in-app purchases 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. INTERMISSIO sells 1 one-off in-app purchase and SolGlow sells 2 in-app purchases, starting at $9.99 per year. Whichever you choose, the download price is not the number that matters.
INTERMISSIO holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 1 and 3 respectively. Written reviews point the same way: 100% of INTERMISSIO's written reviews are positive against 50% of SolGlow's.
INTERMISSIO ships an update every 2 weeks, SolGlow every 10 days. Both last shipped on October 24, 2026.
| Parameter | INTERMISSIO | SolGlow |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 3.7 (3 ratings) |
| Positive reviews | 100.0% of reviews — better | 50.0% of reviews |
| Number of ratings | 1 | 3 — better |
| Update frequency | Every 2 weeks | Every 10 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone | iPhone, iPad, Apple Watch — better |
| Requires iOS | 18.6 | 17.2 — better |
| Further details — not scored | ||
| Size | 7 MB | 10 MB |
| Age rating | 17+ | 12+ |
| Developer | Menno Spijker | Michael Smith |
Customer experience
INTERMISSIO
SolGlow
In-app purchases
INTERMISSIO
- Supporter$4.99
SolGlow
- SolGlow Pro Annual$9.991 Year
- SolGlow Pro$19.99









