# I vs 大姨媽 Dayimate

The clearest difference is update cadence: 大姨媽 Dayimate at every 6 weeks against I's every 9 months. 大姨媽 Dayimate also leads on iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

I ships an update every 9 months, 大姨媽 Dayimate every 6 weeks. The most recent releases landed on October 20, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | I | 大姨媽 Dayimate |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 6 weeks** |
| Size | 46 MB | 52 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 12+ |
| Developer | [BRIGHT WONDER LIMITED](https://appshunter.io/developer/1737363285) | [Nineder Technology co.,ltd](https://appshunter.io/developer/450382645) |

## What reviewers say

### I

[App page](https://appshunter.io/ios/app/i-element/id6479869325)

**Features:** macOS Compatibility

**In-app purchases:** none


### 大姨媽 Dayimate

[App page](https://appshunter.io/ios/app/dayimate/id6754908251)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is I free?

I is free to download, with no in-app purchases.

### Is 大姨媽 Dayimate free?

大姨媽 Dayimate is free to download, with no in-app purchases.

### Do I or 大姨媽 Dayimate have ads?

Neither I nor 大姨媽 Dayimate shows ads.

### Which is updated more often, I or 大姨媽 Dayimate?

I ships an update every 9 months, and 大姨媽 Dayimate every 6 weeks. Most recently, I was updated on October 20, 2026 and 大姨媽 Dayimate on October 17, 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.*