# HEY Calendar vs CallGrid

The clearest difference is iOS requirement: CallGrid at 15.1 against HEY Calendar's 17.2. On price, update cadence, ads and in-app purchases there is nothing between them.

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

HEY Calendar ships an update fortnightly, CallGrid every 4 weeks. The most recent releases landed on October 22, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | HEY Calendar | CallGrid |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (658 ratings)](https://appshunter.io/ios/app/hey-calendar/id6449716061/reviews)** | — |
| Number of ratings | **658** | — |
| Positive reviews | 56.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 4 weeks |
| Monetization | Free | — |
| Size | 64 MB | 32 MB |
| Requires iOS | 17.2 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [37Signals LLC](https://appshunter.io/developer/363576304) | [Stephen Gregg](https://appshunter.io/developer/1875409551) |

## What reviewers say

### HEY Calendar

[App page](https://appshunter.io/ios/app/hey-calendar/id6449716061)

This calendar app organizes your schedule around days and weeks, reflecting how people naturally think. It supports habits, highlights important events, and accommodates flexible scheduling for tasks that don't have a fixed time. Enjoy a full-featured experience with unique twists on conventional calendar functions.

**Highlights:** Weekly view focus, Habit tracking, Event highlighting, Flexible scheduling for 'maybe' tasks, Event countdowns, Day labels for context, Color-coded sub-calendars, Flexible reminders

**In-app purchases:** none

**What reviewers like**

- 🚀 Thoughtful and different approach
- 👍 Lovely UI
- 👍 Wonderful UI
- 👍 Innovative features like 'Sometime this Week'

**What reviewers complain about**

- 🐛 Buggy and unreliable syncing
- 🔍 Lacks integration with other calendars
- 🔍 Missing key features like month/year view and search
- 🔍 Clunky and unintuitive user experience

**Reported bugs**

- Events not showing up on calendar
- Notifications not working as expected
- Frequent crashes and performance issues
- Inability to edit events from external calendars

**Requested features**

- Two-way sync with other calendar services
- Ability to set custom recurrence patterns
- Integration with mapping/navigation apps
- Family/shared calendar support
- Calendar widget for quick access


### CallGrid

[App page](https://appshunter.io/ios/app/callgrid/id6758867974)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is HEY Calendar free?

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

### Is CallGrid free?

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

### Do HEY Calendar or CallGrid have ads?

Neither HEY Calendar nor CallGrid shows ads.

### Which is updated more often, HEY Calendar or CallGrid?

HEY Calendar ships an update fortnightly, and CallGrid every 4 weeks. Most recently, HEY Calendar was updated on October 22, 2026 and CallGrid on October 9, 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.*