Days' vs How many days since that day?
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Days'
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This is an application that shows you how many days are left in your future schedule. You can easily see how many days are left until your certification exam, your mother's birthday, etc. How many days until my mother's birthday? Schedule of a certain date #Annual schedule #Monthly schedule #Weekly schedule It is possible to register a weekly schedule.
How many days since that day?
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The birthday or anniversary of your beloved pet. You can check how many days have passed since such a date.
Screenshots
Verdict
The clearest difference is update cadence: Days' at every 4 days against How many days since that day?'s every 3 weeks. Days' also leads on iOS requirement (14.0 vs 16.0). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Days' ships an update every 4 days, How many days since that day? every 3 weeks. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.
| Parameter | Days' | How many days since that day? |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 days — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 14.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 17 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | Daiki Hirao | Sasai Hiroki |
In-app purchases
Days'
No in-app purchases
How many days since that day?
No in-app purchases
Questions
Is Days' free?
Is How many days since that day? free?
Do Days' or How many days since that day? have ads?
Which is updated more often, Days' or How many days since that day??
Other comparisons
