CalAdvent vs DaysUntilWhen
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CalAdvent
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Countdown to Christmas or any other date you want with this app. By default the app is configured for your Advent Calendar needs, but the end date, number of days and themes can be changed to match your countdown needs. For up to 31 days before the target date, one ornament will be unlocked a day allowing it to be placed on the tree/display. You can admire or rearrange the ornaments at anytime. You can even shake the device to trigger a celebration that can change the countdown scene into a snow globe. This application can use custom themes created with “CalAdvent Plus” (which is only available in the U.S.) and comes with the built-in Theme Packs: Grandma, Nativity Scene, 8-bit Christmas, Easter, Emoji, Halloween; and the Display Theme: 16-bit Tree.
DaysUntilWhen
Track the days remaining until important events with customizable home screen widgets. This app helps you visualize your countdowns for holidays and other significant dates, keeping you informed and excited.
- Customizable widgets
- Holiday countdowns
- Home screen display
- Event tracking
- User-requested features
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Always know how many days are left until your favorite holidays with Holiday Countdown Widgets! This simple but useful app provides customizable widgets that display holiday countdowns right on your home screen. More holidays are in the works! Let us know what you want to see! DaysUntilWhen falls under the Apple EULA found here: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: CalAdvent at none against DaysUntilWhen's 1. CalAdvent also leads on iOS requirement (15.6 vs 17.0). DaysUntilWhen's advantage is update cadence (monthly vs every 4 months). On price, ads 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
Both are free to download. DaysUntilWhen sells 1 one-off in-app purchase. CalAdvent asks for nothing beyond the download.
CalAdvent ships an update every 4 months, DaysUntilWhen monthly. The most recent releases landed on October 26, 2026 and October 14, 2026 respectively.
| Parameter | CalAdvent | DaysUntilWhen |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (5 ratings) — better |
| Number of ratings | — | 5 — better |
| Update frequency | Every 4 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 28 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Eric Smith | Robert J Sarvis Jr |
In-app purchases
CalAdvent
No in-app purchases
DaysUntilWhen
- Advanced Holiday Alerts$1.99
