Business Box

Business Box

App Dev Plus G.K.
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About

Business Box is booking software for small service businesses in Japan. Publish a booking page with one link per appointment type, each with its own length, price, questions and hours, and customers book themselves into your real availability. It stays in step with Google Calendar or Microsoft Outlook (including Microsoft 365): existing events block out times, and each booking is written into your calendar with a Google Meet or Microsoft Teams link. Take card payment in yen before the slot is confirmed, straight into your own Stripe account with no commission, or show the price and collect it in person. Japanese public holidays, including substitute holidays, close your diary automatically. Booking pages, confirmations and reminders work in English and Japanese, following each customer's language. A REST API with webhooks is available on every plan. The free plan has no time limit and needs no card; taking card payment online is ¥1,200 a month, tax included.

About

Seamless Slot is an online appointment booking platform for salons, barbers, spas, dental practices, clinics, and other service businesses. Instead of a monthly subscription, it charges 3% per confirmed paid booking, so businesses only pay when they actually earn. The platform brings scheduling, payments, and client communication into one dashboard. Businesses accept bookings directly from their website, collect deposits through Stripe or Square, and reduce no-shows with automated SMS and email reminders. Key features include drag-and-drop calendar scheduling, team calendars with role-based access, multi-location support, unlimited staff accounts, Google Calendar and Microsoft Outlook sync, customisable email and SMS templates, analytics dashboard, and GDPR-compliant data handling. Free to start, no contracts, no setup fees, and no credit card required. Used by service businesses in the UK and 85+ other countries.

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Small service businesses in Japan that take appointments: clinics, salons, therapists, tutors, consultants, photographers and trainers

Audience

Seamless Slot is designed for service-based entrepreneurs, small-to-medium businesses (SMBs), and multi-staff organizations looking for a risk-free management solution. Our primary audience includes the health and beauty sector (salons, barbers, spas), fitness professionals (personal trainers, boutique studios), and professional consultants. It is ideal for cost-conscious founders who require enterprise-level features—such as unlimited staff profiles and automated SMS reminders—without the burden of fixed monthly subscription fees. Any industry reliant on appointment-based scheduling and client relationship management will benefit from our success-based, pay-as-you-go model.

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Not Supported

API

Offers API Not Supported

Screenshots and Videos

No images available

Screenshots and Videos

Pricing

Free; paid plan ¥1,200/month
Free Version Supported
Free Trial Not Supported

Pricing

$0
Free Version Supported
Free Trial Not Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

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Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Supported
In Person Not Supported

Company Information

App Dev Plus G.K.
Founded: 2016
Japan
marubox.jp/

Company Information

Seamless Slot
Founded: 2024
United Kingdom
seamlessslot.com

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Categories

Categories

Appointment Scheduling Features

Appointment Reminders Supported
Automated Scheduling Supported
Calendar Sync Supported
Client Database Supported
Group Scheduling Supported
Mobile Access Supported
Multi-Location Supported
Online Booking Supported
Online Payments Supported
Recurring Appointments Supported
Room Booking Management Supported

Integrations

Google Calendar Not Supported
Google Tag Manager Not Supported
Stripe Not Supported

Integrations

Google Calendar Supported
Google Tag Manager Supported
Stripe Supported
Claim Business Box and update features and information
Claim Business Box and update features and information
Claim Seamless Slot and update features and information
Claim Seamless Slot and update features and information