# HEY Calendar vs HTML Previewer

The clearest difference is price: HEY Calendar at Free against HTML Previewer's $5.99. HTML Previewer's advantage is update cadence (every 4 days vs fortnightly) and chart position (#192 vs unranked). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

HEY Calendar is free to download; HTML Previewer costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

HEY Calendar ships an update fortnightly, HTML Previewer every 4 days. The most recent releases landed on October 14, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | HEY Calendar | HTML Previewer |
| --- | --- | --- |
| Price | **Free** | $5.99 |
| Rating | **[4.7 (655 ratings)](https://appshunter.io/ios/app/hey-calendar/id6449716061/reviews)** | — |
| Number of ratings | **655** | — |
| Positive reviews | 56.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 4 days** |
| Monetization | Free | — |
| Best chart rank | — | **#192** |
| Size | 64 MB | 9 MB |
| Requires iOS | 17.2 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [37Signals LLC](https://appshunter.io/developer/363576304) | [SHIFENG ZHANG](https://appshunter.io/developer/1886637404) |

## 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


### HTML Previewer

[App page](https://appshunter.io/ios/app/html-previewer/id6785794966)

**Currently charting:** #192 Top Paid · Productivity (US App Store)

**In-app purchases:** none


## Frequently asked questions

### Is HEY Calendar free?

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

### Is HTML Previewer free?

HTML Previewer costs $5.99, with no in-app purchases.

### Do HEY Calendar or HTML Previewer have ads?

Neither HEY Calendar nor HTML Previewer shows ads.

### Which is updated more often, HEY Calendar or HTML Previewer?

HEY Calendar ships an update fortnightly, and HTML Previewer every 4 days. Most recently, HEY Calendar was updated on October 14, 2026 and HTML Previewer on October 11, 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.*