Comparison

DayLight | Sunlight Planner vs Prism

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

Head to head
About

DayLight | Sunlight Planner

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Feeling a bit "off"? It might be a lack of sunlight. DayLight checks the weather forecast for you and lets you know exactly when to go outside, saying, "It's a perfect time for a walk!" It predicts the best time to get sunlight based on weather and UV conditions, allowing you to record your walks as "SunPt" (Sunlight Points). Features: ・Predicts and notifies you of the best times to get sunlight. ・Tracks your walk time with a timer and visualizes it as SunPt. ・Supports habit building with streaks and weekly charts. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Prism

Features
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Prism is an elegant utility that transforms your daily sunlight exposure into a journey of discovery. By syncing seamlessly with your Apple Watch, Prism helps you balance your light intake and well-being effortlessly. Key Features 1 Seamless Apple Watch Integration. Automatically syncs Time in Daylight using Apple Watch ambient light sensors for a hands-free tracking experience. 2 Dynamic iPhone Widgets. Stay connected with beautiful Home Screen and Lock Screen widgets that show your progress at a glance. 3 Spirit Evolution. Your sunlight data nourishes unique Spirits. Unlock various visual forms as they evolve based on your daily activity. 4 Environmental Insights. View real-time local UV Index and sunset data to plan your outdoor day safely. 5 Secure HealthKit Sync. Prism integrates deeply with the Apple Health app to store and visualize your light exposure data securely. Disclaimer. All data is for informational purposes only. Please consult a professional before making health decisions. information about the auto-renewable nature of the Premium Subscription: Subscription period: 1 month. Price: $1.99 per month (or local equivalent). Payment will be charged to iTunes Account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period. Terms of Use (EULA): [https://superficial-restaurant-956.notion.site/Privacy-Policy-2f3f52245d5580b1ae9ac299a0408cff?source=copy_link]. Privacy Policy: [https://superficial-restaurant-956.notion.site/Terms-of-Use-EULA-2f3f52245d558073aa26f42eb6149f80?source=copy_link].

Screenshots

DayLight | Sunlight Planner4 screens
Prism4 screens

Verdict

The call

The clearest difference is update cadence: DayLight | Sunlight Planner at every 2 days against Prism's every 11 days. DayLight | Sunlight Planner also leads on iOS requirement (17.6 vs 26.0). Prism's advantage is device support (3 vs 1). On price, ads and in-app purchases there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. DayLight | Sunlight Planner sells 2 in-app purchases, starting at $2.99 per month and Prism sells 1 in-app purchase, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

DayLight | Sunlight Planner ships an update every 2 days, Prism every 11 days. The most recent releases landed on September 18, 2026 and September 8, 2026 respectively.

Scorecard3 real differences Β· 3 level
DayLight | Sunlight Planner versus Prism: the parameters behind the verdict, then further details
ParameterDayLight | Sunlight PlannerPrism
PriceFreeFree
Update frequencyEvery 2 days β€” betterEvery 11 days
AdsNoNo
In-app purchasesYesYes
DevicesiPhoneiPhone, iPad, Apple Watch β€” better
Requires iOS17.6 β€” better26.0
Further details β€” not scored
Size14 MB3 MB
Age rating4+4+
Developersota kidawaraε‰‘η‚œ ι™ˆ

In-app purchases

2 purchases

DayLight | Sunlight Planner

Subscriptions2
  • DayLight Pro$2.991 Month
  • DayLight Pro7 Days trial$19.991 Year
1 purchases

Prism

Subscriptions1
  • Prism Premium (Monthly)1 Month trial$1.991 Month

Questions

Is DayLight | Sunlight Planner free?
DayLight | Sunlight Planner is free to download, with in-app purchases available.
Is Prism free?
Prism is free to download, with in-app purchases available.
Do DayLight | Sunlight Planner or Prism have ads?
Neither DayLight | Sunlight Planner nor Prism shows ads.
Which is updated more often, DayLight | Sunlight Planner or Prism?
DayLight | Sunlight Planner ships an update every 2 days, and Prism every 11 days. Most recently, DayLight | Sunlight Planner was updated on September 18, 2026 and Prism on September 8, 2026.

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