# Unisim vs Days

The clearest difference is in-app purchases: Unisim at none against Days's 3. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Days sells 3 in-app purchases, starting at $0.99 per 7 days. Unisim asks for nothing beyond the download.

Unisim ships an update every 2 months, Days every 3 months. Both last shipped on October 14, 2026.

## The numbers

| Metric | Unisim | Days |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Size | 66 MB | 15 MB |
| Requires iOS | 17.2 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Digacel S.A. de C.V.](https://appshunter.io/developer/1463464290) | [浩东 邱](https://appshunter.io/developer/1493267968) |

## What reviewers say

### Unisim

[App page](https://appshunter.io/ios/app/unisim/id6648762231)

**Features:** macOS Compatibility

**In-app purchases:** none


### Days

[App page](https://appshunter.io/ios/app/days-important-dates/id6748931827)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Weekly | $0.99 | per 7 days |
| Pro Monthly | $1.99 | per month |
| Pro Yearly | $14.99 | per year |


## Frequently asked questions

### Is Unisim free?

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

### Is Days free?

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

### Do Unisim or Days have ads?

Neither Unisim nor Days shows ads.

### Which is updated more often, Unisim or Days?

Unisim ships an update every 2 months, and Days every 3 months. Most recently, Unisim was updated on October 14, 2026 and Days on October 14, 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.*