Comparison

SilverTimer vs Sunshine Pal

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

Head to head
About

SilverTimer

Features
Read full description

Anyone who has ever dealt with the production of colloidal silver knows the "problem" based on the amount of water to be treated and the desired PPM to determine the required switch-on time for electrolysis. This app takes the determination of this value on the basis of tables and calculates it accordingly after entering the values for the water quantity and the PPM. After pressing the start button, a counter starts to run down. At the end, when the desired PPM are reached, you will receive a notification. The operation is largely self-explanatory. Apple Watch is also supported. If you have any questions, please visit my support page.

About

Sunshine Pal

Effortlessly track your daily natural light exposure to optimize vitamin D production and improve sleep. Get personalized safe sun timers and daily goals to build healthy outdoor habits.

Highlights
  • Automatic Apple Watch tracking
  • Vitamin D estimation
  • Personalized safe sun timer
  • Daily sunlight goals and scoring
  • Trends and insights
  • Home and Lock Screen widgets
Features
Read full description

Tired by 3pm and it isn't the coffee. A blood test that came back low. A winter that hits harder every year. Sleep that won't reset no matter what you try. They trace back to the same input more often than people think: how much natural light you actually got. And it's the one thing nobody measures. You track steps, heart rate, sleep and calories — not the light that quietly drives all four. Sunshine measures it for you. In the background. With nothing to press. IF THIS IS YOU - You work indoors and you're flat by mid-afternoon, with no idea why. - Your vitamin D came back low, and now you're guessing whether the supplement is doing anything. - You're fair-skinned, or you're the one watching the kids outside, and "enough sun" quietly turns into too much. - You read that morning light fixes sleep — and you have no way to know if you're actually getting it. - Winter flattens you every year, and this time you'd like to see it coming. - You work shifts and you've lost the plot with daylight entirely. IT TRACKS ITSELF — APPLE WATCH With an Apple Watch (Series 6 or later), Sunshine reads the ambient light sensor and detects your time in daylight on its own, syncing through HealthKit. No start button. No stop button. Nothing to remember. That matters more than it sounds. An app that needs you to tap "start" every time you step outside is an app you'll abandon in three days. This one keeps working on the days you forget it exists. No Apple Watch? UV index, burn-time window, sun times, supplements, goals and widgets all work on iPhone alone, and you can log a session by hand. Automatic is what the Watch adds. HOW MUCH VITAMIN D YOU ACTUALLY MADE Sunshine estimates your body's vitamin D production from the live UV index, your skin type (Fitzpatrick scale) and your time outdoors. It doesn't replace a blood test — it answers the question a blood test can't: was today enough? Through grey weeks and winter, it shows you when a supplement is doing the sun's job. SUPPLEMENTS COUNT TOO Log vitamin D, K2, magnesium and omega-3 with one tap. They're added to what the sun already gave you, for one honest daily total — synced both ways with the Health app. BEFORE YOU BURN A personal safe-exposure window, calculated from the current UV index and your skin type: how long you can stay out before burning starts. Built for fair skin, for parents timing an afternoon at the park, and for anyone living where the UV doesn't negotiate — Australia, the tropics, altitude. A TARGET YOU CAN ACTUALLY HIT Set a daily light goal — 15 minutes or three hours — and get a 0-100 score for how close you came. Streaks and Game Center achievements keep it going. It turns "I should get outside more" into something with a number attached. THE PATTERN YOU'D NEVER HAVE SPOTTED Seven-day and monthly views. Weekly rings for consistency. Your real peak outdoor hours. Most people find the same thing on their first look: workdays are almost lightless. ON YOUR HOME SCREEN, AND A NUDGE IN TIME Home Screen and Lock Screen widgets show today at a glance. A reminder nudges you outside if you're falling short — at a time you choose, so it arrives while you can still do something about it. WHY THIS ONE - It's automatic. Passive tracking is the only kind that survives a busy week. - It's honest. Estimates are labelled as estimates, built from real UV data and your own skin type. - It's private by design, not by policy. PRIVACY Everything stays on your device. No cloud upload. No account. No analytics. Nothing sold to advertisers. Your health data is yours — that's the whole policy. PREMIUM (OPTIONAL) Sunshine is free to use. Premium unlocks advanced insights and additional widget styles — weekly, yearly, or a one-time lifetime purchase with no subscription. Sunlight is free. Knowing whether you got any is the hard part. Terms of Use: https://elevenapril.com/terms Privacy Policy: https://elevenapril.com/privacy

Screenshots

SilverTimer4 screens
Sunshine Pal4 screens

Verdict

The call

The clearest difference is in-app purchases: SilverTimer at none against Sunshine Pal's 7. SilverTimer also leads on iOS requirement (15.0 vs 18.0). Sunshine Pal's advantage is update cadence (every 9 days vs every 16 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Sunshine Pal sells 7 in-app purchases, starting at $1.99 per 7 days. SilverTimer asks for nothing beyond the download.

UpkeepUpdate frequency

SilverTimer ships an update every 16 months, Sunshine Pal every 9 days. The most recent releases landed on October 29, 2026 and October 26, 2026 respectively.

Scorecard3 real differences · 7 level
SilverTimer versus Sunshine Pal: the parameters behind the verdict, then further details
ParameterSilverTimerSunshine Pal
PriceFreeFree
Rating—5.0 (7 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—7 — better
Update frequencyEvery 16 monthsEvery 9 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, Apple Watch
Requires iOS15.0 — better18.0
Further details — not scored
Size25 MB29 MB
Age rating4+4+
DeveloperJoerg Holzapfel帅 陈

In-app purchases

None

SilverTimer

No in-app purchases

7 purchases

Sunshine Pal

Subscriptions5
  • SunshinePal Premium Weekly$1.997 Days
  • SunshinePal Premium Monthly Trial7 Days trial$1.991 Month
  • SunshinePal Premium Monthly$3.991 Month
Show 2 more
  • SunshinePal Premium Yearly3 Days trial$8.991 Year
  • SunshinePal Premium Yearly Trial7 Days trial$9.991 Year
One-time2
  • SunshinePal Premium Lifetime$12.99
  • SunshinePal Premium Lifetime$17.99

Questions

Is SilverTimer free?
SilverTimer is free to download, with no in-app purchases.
Is Sunshine Pal free?
Sunshine Pal is free to download, with in-app purchases available.
Do SilverTimer or Sunshine Pal have ads?
Neither SilverTimer nor Sunshine Pal shows ads.
Which is updated more often, SilverTimer or Sunshine Pal?
SilverTimer ships an update every 16 months, and Sunshine Pal every 9 days. Most recently, SilverTimer was updated on October 29, 2026 and Sunshine Pal on October 26, 2026.

Other comparisons