Comparison

Intervals vs Arrebol

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

Head to head
About

Intervals

This app helps you track recurring tasks and habits by counting the time elapsed since you last completed an activity. It's designed to free your mind from remembering when you last did something, offering a simple way to monitor daily life activities.

Highlights
  • Elapsed time tracking
  • Habit monitoring
  • Recurring task management
  • Customizable trackers
  • Simple interface
Features
Read full description

Track habits without the pressure How long has it been since you last watered the plants? Changed your car's oil? Called your parents? Or washed the bed sheets? Intervals is a beautifully simple elapsed-time tracker designed to help you keep tabs on the recurring tasks and habits in your daily life. Instead of counting down to a deadline, Intervals counts up—showing you exactly how many days, hours, and minutes have passed since you last completed an activity. Free your mind from trying to remember when you last did something. Just create a tracker, tap it when you finish the task, and let Intervals do the remembering for you. Perfect for Tracking: Home Maintenance: Changing water filters, washing bedding, deep cleaning rooms. Car Care: Oil changes, tire pressure checks, renewing registration. Health & Personal: Haircuts, replacing your toothbrush, taking medication. Pets: Flea and tick medication, grooming, vet visits. Habits: Tracking streaks, monitoring time between coffee breaks, or maintaining "inbox zero."

About

Arrebol

This app provides accurate sunrise and sunset times for your current location. It offers beautiful widgets and lock screen displays, working entirely offline with no data collection. Ideal for those who enjoy nature's daily cycles and value privacy.

Highlights
  • Automatic location-based calculations
  • Home screen widgets
  • Lock screen time display
  • Manual location search
  • Offline functionality
  • Privacy-focused
Features
Read full description

Will tonight's sunset be worth heading out for? Arrebol helps you plan golden hour and blue hour, see how promising the sky looks, and choose where to shoot. Check the light windows, a sky score with its reasons and confidence, and the sun's direction before you leave. A LIVING SKY • The sky on screen is rendered from the forecast: tonight's clouds, lit by the sun where it will be • The sun's whole day as one curve. Drag the time ruler and watch the light change • A countdown to the next sunrise or sunset, with golden and blue hour marked on the curve WILL THE SKY LIGHT UP? • A sky score for every golden hour, from high, mid and low cloud, rain and haze; at sunset it also checks low cloud toward the sun, and the forecast shows how confident each score is • Plain reasons, like "high cloud to catch the colour" or "low cloud may block the sun" • The next 24 hours of cloud and the next 10 days at a glance EVERY PLACE, ONE SWIPE APART • Your location first, then the spots you save. Swipe between them • Swipe up for the whole day: blue and golden hour, sunrise, sunset, moonrise and moonset with directions, twilight, day length, moon phase and the next full moon • Search cities, landmarks or coordinates, and see each place's local time PLAN THE SHOT • Sun & moon map: bearing lines from any vantage point and the day's sun path • Sky path chart, and a camera view that draws the path over the real sky • Add any window to your calendar SKY EVENTS FOR EACH PLACE • Solar and lunar eclipses to 2040, with coverage and contact times where you are, and directions to the path of totality • Meteor showers with the rate you can expect on the peak night • Live aurora outlook from NOAA space weather ALWAYS AT HAND • Alerts before sunrise, sunset, golden or blue hour, optionally only when the sky looks good • Live Activity countdown on the Lock Screen and in the Dynamic Island • Home Screen and Lock Screen widgets The name: arrebol is Spanish for the red glow of clouds lit by the rising or setting sun. Accurate: sun and moon times are checked against the US Naval Observatory, and eclipses against NASA. Weather data from Apple Weather. Space weather from NOAA SWPC. Eclipse predictions by Fred Espenak, NASA GSFC.

Screenshots

Intervals4 screens
Arrebol4 screens

Verdict

The call

The clearest difference is update cadence: Arrebol at daily against Intervals's every 116 months. Intervals's advantage is iOS requirement (13.0 vs 26.0). On price, rating, ratings volume and ads 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Intervals against 5.0 for Arrebol. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

UpkeepUpdate frequency

Intervals ships an update every 116 months, Arrebol daily. Both last shipped on October 6, 2026.

Scorecard2 real differences · 8 level
Intervals versus Arrebol: the parameters behind the verdict, then further details
ParameterIntervalsArrebol
PriceFreeFree
Rating5.0 (1 ratings)5.0 (2 ratings)
Positive reviews—100.0% of reviews
Number of ratings12 — better
Update frequencyEvery 116 monthsDaily — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPod — betteriPhone
Requires iOS13.0 — better26.0
Further details — not scored
Size20 MB3 MB
Age rating4+4+
DeveloperFlorithm LLCJiawen Sun

Customer experience

Intervals

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Arrebol

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Intervals

No in-app purchases

None

Arrebol

No in-app purchases

Questions

Is Intervals free?
Intervals is free to download, with no in-app purchases.
Is Arrebol free?
Arrebol is free to download, with no in-app purchases.
Which has better reviews, Intervals or Arrebol?
Intervals and Arrebol are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.
Do Intervals or Arrebol have ads?
Neither Intervals nor Arrebol shows ads.
Which is updated more often, Intervals or Arrebol?
Intervals ships an update every 116 months, and Arrebol daily. Most recently, Intervals was updated on October 6, 2026 and Arrebol on October 6, 2026.

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