Comparison

Shield 100SA vs Sun Nudge

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Shield 100SA

Features
Read full description

The 100 Club of San Antonio presents Shield 100SA - a resource for first responders providing information on mental health resources, peer support networks and more.

About

Sun Nudge

This app gently reminds you to get natural daylight exposure daily. It integrates with Apple Health to track your time in daylight and offers features like 'sun walks' and sun safety nudges. Enjoy a calm, privacy-focused experience with no ads or accounts required.

Highlights
  • Daily daylight reminders
  • Sun walk tracking
  • Sunscreen logging
  • UV and golden hour alerts
  • Home and Lock Screen widgets
  • Apple Watch integration
  • Privacy-focused design
Features
Read full description

Sun Nudge is your gentle daily reminder to get more natural daylight — without the hassle. It reads Time in Daylight from Apple Health. No timers to start. No account to create. Just a clear picture of today’s light on iPhone and Apple Watch. What’s new in 1.1 Sun walks When daylight and steps overlap, Sun Nudge glues those windows into a sun walk — minutes, distance, and the time it happened. You’ll also see what share of your steps were outside. When the sun happened A morning, midday, and evening strip so you can tell if your light was a sunrise walk or a late-afternoon stretch. Morning light A quiet streak for days whose first daylight is before a time you pick. Week at a glance Seven checks for the days you hit your goal, plus a month you can scroll back through. Still here, still calm • Daily daylight ring and streak • A goal you can change anytime • Sunscreen logging and reapply nudges (estimates only — not medical advice) • Optional UV and golden hours when you turn on location • Home Screen and Lock Screen widgets, Control Center, and Shortcuts • Apple Watch pages for today, this week, your walk, and sun safety Privacy, on purpose Sun Nudge has no account and no ads. Time in Daylight, steps, and walking distance stay on this device. Location is optional and only used for UV and sky when you ask for sun safety. Automatic daylight minutes come from Apple Watch via Apple Health. Allow Steps and Walking + Running Distance if you want sun walks; Time in Daylight still works without them. Step into the light. Feel the difference.

Screenshots

Shield 100SA4 screens
Sun Nudge4 screens

Verdict

The call

The clearest difference is price: Shield 100SA at Free against Sun Nudge's $2.99. Shield 100SA also leads on iOS requirement (15.1 vs 18.0). Sun Nudge's advantage is update cadence (every 4 days vs every 10 days). On ads, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Shield 100SA is free to download; Sun Nudge costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Shield 100SA ships an update every 10 days, Sun Nudge every 4 days. The most recent releases landed on September 30, 2026 and October 8, 2026 respectively.

Scorecard3 real differences · 7 level
Shield 100SA versus Sun Nudge: the parameters behind the verdict, then further details
ParameterShield 100SASun Nudge
PriceFree — better$2.99
Rating—5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 10 daysEvery 4 days — better
AdsNoNo
In-app purchasesNoNo
Monetization—Paid
DevicesiPhone, iPodiPhone, Apple Watch
Requires iOS15.1 — better18.0
Further details — not scored
Size35 MB29 MB
Age rating17+17+
Developer100 Club of San AntonioDustin Rodriguez

In-app purchases

None

Shield 100SA

No in-app purchases

None

Sun Nudge

No in-app purchases

Questions

Is Shield 100SA free?
Shield 100SA is free to download, with no in-app purchases.
Is Sun Nudge free?
Sun Nudge costs $2.99, with no in-app purchases.
Do Shield 100SA or Sun Nudge have ads?
Neither Shield 100SA nor Sun Nudge shows ads.
Which is updated more often, Shield 100SA or Sun Nudge?
Shield 100SA ships an update every 10 days, and Sun Nudge every 4 days. Most recently, Shield 100SA was updated on September 30, 2026 and Sun Nudge on October 8, 2026.

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