# Effizency Field vs Shared Calendar .

The clearest difference is in-app purchases: Effizency Field at none against Shared Calendar .'s 5. Effizency Field also leads on update cadence (monthly vs every 4 months). Shared Calendar .'s advantage is iOS requirement (13.0 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. Shared Calendar . sells 5 in-app purchases, starting at $4.99 per 7 days. Effizency Field asks for nothing beyond the download.

Effizency Field ships an update monthly, Shared Calendar . every 4 months. The most recent releases landed on October 10, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Effizency Field | Shared Calendar . |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 4 months |
| Size | 171 MB | 76 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Effizency](https://appshunter.io/developer/1521903032) | [Oleksii Danylenko](https://appshunter.io/developer/6794287354) |

## What reviewers say

### Effizency Field

[App page](https://appshunter.io/ios/app/effizency-field/id1521903030)

**In-app purchases:** none


### Shared Calendar .

[App page](https://appshunter.io/ios/app/shared-calendar/id6751322065)

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $4.99 | per 7 days |
| Weekly-Trial | $4.99 | per 7 days |
| Monthly | $12.99 | per month |
| Yearly | $39.99 | per year |
| Lifetime | $59.99 | one-time |


## Frequently asked questions

### Is Effizency Field free?

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

### Is Shared Calendar . free?

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

### Do Effizency Field or Shared Calendar . have ads?

Neither Effizency Field nor Shared Calendar . shows ads.

### Which is updated more often, Effizency Field or Shared Calendar .?

Effizency Field ships an update monthly, and Shared Calendar . every 4 months. Most recently, Effizency Field was updated on October 10, 2026 and Shared Calendar . on October 8, 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.*