# Simple Calendar vs GRIDD PRO

The clearest difference is in-app purchases: GRIDD PRO at none against Simple Calendar's 2. Simple Calendar's advantage is update cadence (every 4 weeks vs every 5 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Simple Calendar sells 2 in-app purchases, starting at $1.99 per month. GRIDD PRO asks for nothing beyond the download.

Simple Calendar ships an update every 4 weeks, GRIDD PRO every 5 months. Both last shipped on October 2, 2026.

## The numbers

| Metric | Simple Calendar | GRIDD PRO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (9 ratings)](https://appshunter.io/ios/app/simple-calendar-quarterplan/id1446735655/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 40.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 5 months |
| Monetization | Freemium | — |
| Size | 41 MB | 17 MB |
| Requires iOS | 13.4 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Raemedy Limited](https://appshunter.io/developer/1232186470) | [Violence Prevention Network gGmbH](https://appshunter.io/developer/1752082728) |

## What reviewers say

### Simple Calendar

[App page](https://appshunter.io/ios/app/simple-calendar-quarterplan/id1446735655)

Organize your tasks and schedule with a clean, minimalist interface. Plan your day using time blocks, set reminders for important events, and manage tasks in an intuitive inbox. Track your progress with daily and weekly statistics.

**Highlights:** Time blocking for daily planning, Specific time reminders and notifications, Intuitive inbox for unscheduled tasks, Calendar view with daily/weekly statistics, Customizable categories and priorities, Dark mode support, Repeating tasks

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Quarterplan Pro Monthly | $1.99 | per month |
| Quarterplan Pro Yearly | $11.99 | per year |


### GRIDD PRO

[App page](https://appshunter.io/ios/app/gridd-pro/id6504397339)

**In-app purchases:** none


## Frequently asked questions

### Is Simple Calendar free?

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

### Is GRIDD PRO free?

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

### Do Simple Calendar or GRIDD PRO have ads?

Neither Simple Calendar nor GRIDD PRO shows ads.

### Which is updated more often, Simple Calendar or GRIDD PRO?

Simple Calendar ships an update every 4 weeks, and GRIDD PRO every 5 months. Most recently, Simple Calendar was updated on October 2, 2026 and GRIDD PRO on October 2, 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.*