# Oasis Mobile vs IEU Calendar

The clearest difference is in-app purchases: Oasis Mobile at none against IEU Calendar's 1. Oasis Mobile also leads on ads (none vs shown) and iOS requirement (9.0 vs 12.0). IEU Calendar's advantage is update cadence (every 6 days vs every 2 months). On price and device support there is nothing between them.

Both are free to download. IEU Calendar sells 1 one-off in-app purchase. Oasis Mobile asks for nothing beyond the download.

Oasis Mobile ships an update every 2 months, IEU Calendar every 6 days. The most recent releases landed on October 23, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Oasis Mobile | IEU Calendar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/oasis-mobile/id492022733/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 6 days** |
| Size | 20 MB | 34 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Oasis Co., Ltd.](https://appshunter.io/developer/818968182) | [Mohammed Fuoad ALHam.](https://appshunter.io/developer/1157651450) |

## What reviewers say

### Oasis Mobile

[App page](https://appshunter.io/ios/app/oasis-mobile/id492022733)

**Features:** macOS Compatibility

**In-app purchases:** none


### IEU Calendar

[App page](https://appshunter.io/ios/app/ieu-calendar/id6476887196)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


## Frequently asked questions

### Is Oasis Mobile free?

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

### Is IEU Calendar free?

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

### Do Oasis Mobile or IEU Calendar have ads?

IEU Calendar shows ads; Oasis Mobile does not.

### Which is updated more often, Oasis Mobile or IEU Calendar?

Oasis Mobile ships an update every 2 months, and IEU Calendar every 6 days. Most recently, Oasis Mobile was updated on October 23, 2026 and IEU Calendar on October 25, 2026.

---

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