Comparison

Days vs Sun Light

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

Head to head
About

Days

Features
Read full description

Days – Live Longer is your personal habit tracker designed to help you live a longer, healthier life. Based on scientific research, our app helps you track the habits that have the biggest impact on your longevity. Features: • Live countdown in Days, Hours, Minutes, Seconds • Daily habit check‑ins for life builders and life drains • Habit impact chart and insights • Reminders that keep you on track • Home screen widgets at a glance Days Pro: • Track all habits • Widgets unlocked Privacy: All data stays on your device. No account required. **Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/** Note: This app is for wellness tracking and is not medical advice.

About

Sun Light

Track your daily sunlight exposure with this simple app. It uses your Apple Watch data to fill a daily progress ring, track streaks, and show your history. Enjoy a straightforward approach to monitoring your time spent outdoors.

Highlights
  • Daily daylight progress ring
  • Streak tracking
  • 7-day history chart
  • Morning, afternoon, and evening breakdown
  • Custom daily goal
  • Sunrise and sunset times
  • Home and lock screen widgets
Features
Read full description

Get outside. Sun Light does the rest. Sun Light turns your daily sunlight into a simple ring, a streak, and a clear picture of when you actually got your light — morning, afternoon, or evening. Most people get less daylight than they think. Sun Light makes it visible in one glance, from your home screen or your wrist. WHAT YOU GET • Daily daylight ring and streak • Morning light window — see your first daylight of the day against sunrise • Morning, afternoon and evening breakdown • 7-day history chart • Shareable daily card • Custom daily goal • Sunrise and sunset times • Home screen and lock screen widgets • Apple Watch app and complications HOW TRACKING WORKS With an Apple Watch, daylight is recorded automatically — nothing to start or stop. Apple Watch writes Time in Daylight to Apple Health and Sun Light reads it. Without an Apple Watch, use a Sun Session: tap start when you head outside, tap stop when you come back. Sun Light saves those minutes to Apple Health too. Automatic tracking requires Apple Watch Series 6 or later, Apple Watch SE (2nd generation), or Apple Watch Ultra, on watchOS 10 or later. PRIVATE BY DESIGN No account. No server. No analytics. No ads. Your daylight data stays in Apple Health on your devices. SUN LIGHT PRO Sun Light is free, and everything above stays free — including the shareable daily card. Pro adds your morning light window history and unlimited history beyond the last seven days. 7-day free trial, then $24.99/year — or $49.99 once for lifetime access. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Days3 screens
Sun Light3 screens

Verdict

The call

The clearest difference is update cadence: Days at every 2 days against Sun Light's every 8 days. On price, 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

Both are free to download. Days sells 1 in-app purchase, starting at $1.99 per month and Sun Light sells 3 in-app purchases, starting at $24.99 per year. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Days ships an update every 2 days, Sun Light every 8 days. The most recent releases landed on October 2, 2026 and October 8, 2026 respectively.

Scorecard1 real difference · 9 level
Days versus Sun Light: the parameters behind the verdict, then further details
ParameterDaysSun Light
PriceFreeFree
Rating—4.5 (2 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 2 days — betterEvery 8 days
AdsNoNo
In-app purchasesYesYes
Monetization—Free
DevicesiPhone, iPadiPhone, iPad, Apple Watch — better
Requires iOS17.017.0
Further details — not scored
Size10 MB6 MB
Age rating12+4+
DeveloperIBRAHIM HADDADJAMES JAY QUACKENBUSH

In-app purchases

1 purchases

Days

Subscriptions1
  • Days PRO$1.991 Month
3 purchases

Sun Light

Subscriptions1
  • Sun Light Pro7 Days trial$24.991 Year
One-time2
  • Tip$4.99
  • Sun Light Pro Lifetime$49.99

Questions

Is Days free?
Days is free to download, with in-app purchases available.
Is Sun Light free?
Sun Light is free to download, with in-app purchases available.
Do Days or Sun Light have ads?
Neither Days nor Sun Light shows ads.
Which is updated more often, Days or Sun Light?
Days ships an update every 2 days, and Sun Light every 8 days. Most recently, Days was updated on October 2, 2026 and Sun Light on October 8, 2026.

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