# Day2U vs Simple D

The clearest difference is iOS requirement: Simple D at 15.0 against Day2U's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Day2U sells 1 one-off in-app purchase and Simple D sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Day2U ships an update fortnightly, Simple D every 3 weeks. The most recent releases landed on October 5, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Day2U | Simple D |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Size | 25 MB | 48 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [CHUNGKIL KIM](https://appshunter.io/developer/960187999) | [beeefriends](https://appshunter.io/developer/1498434318) |

## What reviewers say

### Day2U

[App page](https://appshunter.io/ios/app/day2u-d-day-countdown/id1456616742)

**Features:** macOS Compatibility, iMessage stickers

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ad | $3.99 | one-time |


### Simple D

[App page](https://appshunter.io/ios/app/simple-d-day/id1631871998)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $6.99 | one-time |


## Frequently asked questions

### Is Day2U free?

Day2U is free to download, with in-app purchases available.

### Is Simple D free?

Simple D is free to download, with in-app purchases available.

### Do Day2U or Simple D have ads?

Both Day2U and Simple D show ads.

### Which is updated more often, Day2U or Simple D?

Day2U ships an update fortnightly, and Simple D every 3 weeks. Most recently, Day2U was updated on October 5, 2026 and Simple D on October 7, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*