Comparison

Simple Days Until vs Until24

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

Head to head
About

Simple Days Until

Features
Read full description

A simple, beautiful iOS app that brings the passage of time to life. Who it's for: - See how many days are left in this year or this month - Know how close a deadline is, right on your Home Screen - Count down to a milestone birthday - Feel time intuitively without a heavy calendar app Features: Three event types - Deadline: set any custom date range - Period: Today / This Week / This Month / This Year (auto-updating) - Birthday: choose Next Birthday or Specific Age Home Screen Widgets Small, Medium, Large sizes. Keep your favorite events in sight. 10 Theme Colors Morning Forest, Charcoal and Ember, Deep Sea, Dusk Rose, and more. Personal Palette 36 icons and 13 colors to make each event your own. Week Start Choose any day Sunday through Saturday for This Week events. One-time Pro A single 0.49 USD purchase unlocks: - Unlimited events (free is limited to 4) - Modern color palette (8 extra event colors) - All theme colors (8 extra app themes) - All widget sizes - CSV and JSON export Not a subscription. Buy once, keep forever. Privacy All data stays on your device. No external servers other than Apple's purchase processing. No ads, no tracking. Already own the previous paid version? If you purchased version 1.0, Pro features are automatically unlocked at no extra cost.

About

Until24

This app helps you track the time remaining until important daily, weekly, or one-time events. It offers customizable widgets for your home and lock screens, updating in real-time.

Highlights
  • Display time until events
  • Manage recurring and one-time schedules
  • Home screen widgets
  • Lock screen widgets
  • Real-time second updates
  • Customizable fonts
Features
Read full description

This app is a simple clock app for those who want to check "time remaining until". For example, it can display daily how many hours and minutes remain until work or school, and I think it's designed to be user-friendly especially for those with the same daily schedule. It supports both  Home screen widgets (4 types) Lock screen widgets (3 types) Widgets allowing you to quickly grasp the remaining time from the lock screen and other places. The time displayed on widgets is also updated in real-time every second. Of course, it supports not only daily and weekly schedules but also one-time events. +++ When to use? +++ Daily use scenarios: ・Time remaining until work/part-time job/school ・How many hours until the end of work/business hours ・Remaining time until the end of the day at a glance ・Until bedtime ・Until today's quota deadline ・Until departure Weekly use scenarios: ・Time until lessons/classes ・Until YouTube video upload One-time event scenarios: ・Until assignment deadline ・Until entrance exams ・Until competitions ・Until the next Olympics ・Until summer vacation ends ・Until the end of this year ・Until moving ・Until the new iPhone release date etc. +++ Features +++ ・Display time until ~ ・Manage daily, weekly recurring schedules and one-time events in a list ・Adjustable times for each day of the week ・Home screen widgets ・Lock screen widgets ・Changeable fonts (4 types) Please report any features you think are missing or any bugs you encounter. I would like to improve the app in the future. If you have any requests regarding time display format in particular, please provide detailed feedback in your review! Terms of Service: https://sites.google.com/view/until24/term-of-service Privacy Policy: https://sites.google.com/view/until24/privacy-policy

Screenshots

Simple Days Until4 screens
Until243 screens

Verdict

The call

The clearest difference is ads: Simple Days Until at none against Until24's shown. Simple Days Until also leads on update cadence (weekly vs every 6 months). On price, in-app purchases, device support and iOS requirement 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.

UpkeepUpdate frequency

Simple Days Until ships an update weekly, Until24 every 6 months. The most recent releases landed on September 9, 2026 and September 21, 2026 respectively.

Scorecard2 real differences · 6 level
Simple Days Until versus Until24: the parameters behind the verdict, then further details
ParameterSimple Days UntilUntil24
PriceFreeFree
Positive reviews—100.0% of reviews
Update frequencyWeekly — betterEvery 6 months
AdsNo — betterYes
In-app purchasesNoNo
Monetization—Free with in-app purchases
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.217.0 — better
Further details — not scored
Size12 MB20 MB
Age rating4+4+
Developernaoya takamuraRyusuke Uchida

In-app purchases

None

Simple Days Until

No in-app purchases

None

Until24

No in-app purchases

Questions

Is Simple Days Until free?
Simple Days Until is free to download, with no in-app purchases.
Is Until24 free?
Until24 is free to download, with no in-app purchases.
Do Simple Days Until or Until24 have ads?
Until24 shows ads; Simple Days Until does not.
Which is updated more often, Simple Days Until or Until24?
Simple Days Until ships an update weekly, and Until24 every 6 months. Most recently, Simple Days Until was updated on September 9, 2026 and Until24 on September 21, 2026.

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