Comparison

Daylight Tracker vs CalSlashD

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

Head to head
About

Daylight Tracker

Features
Read full description

Daylight helps you become more aware of your time in daylight, so you can build routines that bring balance and energy to your day. In northern countries, especially during darker months, it’s easy to spend most of the day indoors. Daylight helps you notice how much light you actually get and reminds you to go outside when it matters most. With Daylight you can: β€’ See your daily and weekly daylight minutes β€” simple, visual, and motivating. β€’ Set your own daylight goal β€” choose how much time you’d like to spend outside. β€’ Get friendly reminders β€” a gentle nudge if you haven’t reached your goal yet. β€’ Sync automatically with Apple Watch β€” or track manually, no Watch required. β€’ Build awareness β€” small moments in daylight can make a big difference in how you feel. Daylight integrates with Apple Health to read and write your daylight data. All information stays private and secure on your device. Notice your light. Find your rhythm. Feel more balanced.

About

CalSlashD

Features
Read full description

Most calorie trackers hold you to a strict daily limit. Cal/d tracks your daily average instead, so one heavy day doesn't wreck your progress. Set a start date and daily limit, and Cal/d reads dietary energy from Apple Health to show: - Daily Average: total calories since your start date, divided by days elapsed. - Remaining Calories: stay under your limit and you build a surplus to spend whenever you want. - Surplus Goal: surplus divided by daily limit is how many days you've saved. Set a target (say, 3 days). - Countdown to Next 250: a timer until your next 250 calories, expandable to 5 timers ahead (20 with Plus). Don't want to wait? Factor in Active Energy too. A jog raises your surplus and moves you closer to your goal. Log calories and nutrition directly in Cal/d, or keep your current tracker and open it with one tap from a built-in link list. Anything that writes to Apple Health, Cal/d can read. PLUS FEATURES: - Unlimited What-If calorie planning - Unlimited surplus-goal days - All 20 countdown milestones - Custom Stats date ranges longer than 30 days - "Last…" Stats periods beyond the last 7 days - After-exercise pace comparison - Live Activity on the Lock Screen and Dynamic Island - Calorie checkpoint notifications Cal/d is not medical advice. Consult your doctor before changing your diet.

Screenshots

Daylight Tracker4 screens
CalSlashD4 screens

Verdict

The call

The clearest difference is update cadence: CalSlashD at every 2 days against Daylight Tracker's every 3 months. On price, ads, in-app purchases and device support 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Daylight Tracker ships an update every 3 months, CalSlashD every 2 days. The most recent releases landed on October 2, 2026 and October 4, 2026 respectively.

Scorecard1 real difference Β· 5 level
Daylight Tracker versus CalSlashD: the parameters behind the verdict, then further details
ParameterDaylight TrackerCalSlashD
PriceFreeFree
Update frequencyEvery 3 monthsEvery 2 days β€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.618.0 β€” better
Further details β€” not scored
Size1 MB7 MB
Age rating4+4+
DeveloperGijsbert van den BrinkDaniel Hotyanov

In-app purchases

None

Daylight Tracker

No in-app purchases

None

CalSlashD

No in-app purchases

Questions

Is Daylight Tracker free?
Daylight Tracker is free to download, with no in-app purchases.
Is CalSlashD free?
CalSlashD is free to download, with no in-app purchases.
Do Daylight Tracker or CalSlashD have ads?
Neither Daylight Tracker nor CalSlashD shows ads.
Which is updated more often, Daylight Tracker or CalSlashD?
Daylight Tracker ships an update every 3 months, and CalSlashD every 2 days. Most recently, Daylight Tracker was updated on October 2, 2026 and CalSlashD on October 4, 2026.

Other comparisons