TaskTetra vs Days Until 100
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TaskTetra
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TaskTetra is a ToDo app that divides a single screen into four sections, allowing you to manage four types of lists simply. Without the hassle of tab switching, page transitions, or complex tagging, you can complete your task management in a clear view. The names of each section can be customized according to your preference. Name the four sections "Urgent & Important", "Important, Not Urgent", "Urgent, Not Important" and "Neither", and you can use it as an Eisenhower matrix to sort your tasks by priority.
Days Until 100
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Keep track of the days until your special moments, or the days that have passed since an important date. Easily view upcoming events such as trips, exams, birthdays, anniversaries, and more—all in one place. Features • Count both days remaining and days since • Create unlimited countdowns with custom titles, dates, and emojis • Home Screen widget support for quick access • Clean, simple, and easy-to-read design Never lose track of the moments that matter most.
Screenshots
Verdict
The clearest difference is in-app purchases: Days Until 100 at none against TaskTetra's 1. TaskTetra's advantage is iOS requirement (16.0 vs 18.6). 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. TaskTetra sells 1 one-off in-app purchase. Days Until 100 asks for nothing beyond the download.
| Parameter | TaskTetra | Days Until 100 |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 months | — |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Devices | iPhone | iPhone |
| Requires iOS | 16.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 15 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Koya Nambo | Kairu Inoue |
In-app purchases
TaskTetra
- Remove Ads$1.99
Days Until 100
No in-app purchases









