May Calendar vs OnBoard
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
May Calendar
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.
- 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
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Read long event titles right in month view. May Calendar wraps event titles across multiple lines, so you can read your plans directly on the calendar. Show event times and locations, choose a comfortable text size, and switch between work and personal calendars with a tap. MAKE YOUR CALENDAR EASIER TO READ Customize fonts and text sizes to suit you. Give your calendar a personal touch with theme colors, event background colors, and patterns. ADD FREQUENT EVENTS FASTER Save templates for events you often create, such as meetings, workouts, and appointments. Double-tap a date to open your templates, then tap one to add the event. SWITCH BETWEEN WORK AND PERSONAL Save different combinations of calendars and switch between them with one tap. Choose which calendars to show for work, personal plans, or any other part of your day. CHOOSE FROM 20 WIDGETS Find a widget that suits your needs, with additional options available exclusively on iPad. FOCUS ON THE EVENTS YOU NEED Filter your calendar to show only events that match the text you enter. Set rules to apply background colors and patterns to matching events. SET ALERTS BEFORE EVENTS START OR END Set alerts before an event’s start time or end time. Notifications are delivered by Apple’s Calendar app. MORE WAYS TO CUSTOMIZE • Time zone settings • Choice of first day of the week • Reminder display • Holiday display • Week numbers • Lunar calendar display
OnBoard
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OnBoard is the appointment book for businesses that work by appointment: hair salons, barbershops, beauty and nail studios, repair shops, clinics, tattoo studios and consultancies. See at a glance who's coming today, when, and who's running late, with every client's history one tap away. Free and unlimited: unlimited clients, appointments and categories, with no subscriptions and no in-app purchases. YOUR DAY AT A GLANCE • Today's appointments with time, client, service and notes • Jump to any date with the calendar, or back to today with one tap • Upcoming and past appointments, kept apart and counted CHECK-INS AND LATENESS, WITH A SWIPE • Swipe right when a client arrives, or left for a no-show • Or touch and hold an appointment and pick from the menu • Lateness is logged for you: late arrivals are marked "Arrived late" • A red alert when a pending appointment passes your grace period • You decide how many minutes count as late (1 to 60) and when appointments move to past YOUR CLIENTS, ALWAYS AT HAND • A card for each client with phone, email, notes and "client since" date • Every client's full appointment and attendance history • Call or email straight from the client card • Search by name, phone or email • When you book, OnBoard recognizes the phone number and suggests the client: no duplicates ORGANIZE BY SERVICE • Create your services with an icon and a color: haircut, color, check-up, consultation, pickup… • Filter each service's appointments from the sidebar EXPORT YOUR DATA • Export your clients as CSV or JSON whenever you like, for your spreadsheet or your CRM ON IPHONE, IPAD AND IPHONE DUO • A sidebar on iPad and iPhone Duo, with the list and the details side by side • Native iOS 27 design, with Dark Mode, Dynamic Type and VoiceOver • Automatic sync with your iCloud across all your devices TRULY PRIVATE No accounts, no ads and no tracking. OnBoard collects no data at all: your appointments and clients only travel to your own iCloud.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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 October 22, 2026 and October 31, 2026 respectively.
| Parameter | May Calendar | OnBoard |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (40 ratings) — better | — |
| Positive reviews | 56.8% of reviews | — |
| Number of ratings | 40 — better | — |
| Update frequency | Every 3 weeks | Every 5 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.6 — better | 27.0 |
| Further details — not scored | ||
| Size | 39 MB | 5 MB |
| Age rating | 12+ | 4+ |
| Developer | Motoki Takahashi | Ruben Gonzalez |
In-app purchases
May Calendar
- Remove ads$7.99
OnBoard
No in-app purchases





