# May Calendar vs OnBoard

The clearest difference is in-app purchases: OnBoard at none against May Calendar's 1. OnBoard also leads on ads (none vs shown) and update cadence (every 5 days vs every 3 weeks). May Calendar's advantage is iOS requirement (16.6 vs 27.0). On price and device support there is nothing between them.

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

May Calendar ships an update every 3 weeks, OnBoard every 5 days. The most recent releases landed on November 11, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | May Calendar | OnBoard |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (40 ratings)](https://appshunter.io/ios/app/may-calendar/id1579147803/reviews)** | — |
| Number of ratings | **40** | — |
| Positive reviews | 56.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 39 MB | 5 MB |
| Requires iOS | **16.6** | 27.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 12+ | +4 |
| Developer | [Motoki Takahashi](https://appshunter.io/developer/1411233238) | [Ruben Gonzalez](https://appshunter.io/developer/1885517252) |

## What reviewers say

### May Calendar

[App page](https://appshunter.io/ios/app/may-calendar/id1579147803)

This app offers a comprehensive view of your schedule, displaying all events on a monthly calendar with customizable time and location details. Manage multiple calendars, use templates for quick event registration, and personalize your view with custom colors and fonts.

**Highlights:** Display all schedules on monthly view, Manage multiple calendar sets, Register schedules with templates, 20 types of customizable widgets, Filter events by keywords, Set event background colors and patterns, Customizable notifications

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $7.99 | one-time |


### OnBoard

[App page](https://appshunter.io/ios/app/onboard-appointment-book/id6760704612)

**Features:** macOS Compatibility, Vision Pro support, iPhone Duo support

**In-app purchases:** none


## Frequently asked questions

### Is May Calendar free?

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

### Is OnBoard free?

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

### Do May Calendar or OnBoard have ads?

May Calendar shows ads; OnBoard does not.

### Which is updated more often, May Calendar or OnBoard?

May Calendar ships an update every 3 weeks, and OnBoard every 5 days. Most recently, May Calendar was updated on November 11, 2026 and OnBoard on November 9, 2026.

---

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