Appointments & availability
I have to compare work and personal calendars before I know when I am free.
For language teachers, coaches, consultants and online instructors
Your one-to-one service.
Everything managed in cotobo.
See appointments and availability, keep client records and shared notes, calculate finance figures and prepare invoices—all in one place.
Applications are open for about ten beta testers starting in November 2026.
DESKTOP
Good morning, Mika。
Saturday, September 12, 2026
WED93
THU10
FRI113
TODAY125
SUN13
MON142
TUE151
Three sessions are scheduled for today.
MinaDirectNext
10:00 – 11:00 60 minSales / amount received ¥8,000AlexiTalki
14:30 – 15:30 60 minSales $28 / amount received $21.68＋ Add lesson
Today’s numbers
Lessons3 （3h）
Sales¥23,500
Lesson income¥21,730
Average hourly income¥7,243
Follow-up
1 client to checkLast session was 14 days ago
MOBILEGood morning, Mika Clients you have not seen recently
Sun, Sep 13Today‹ ›
Next lessonTomorrow
11:30 - 12:30Mon, Sep 14MMina● iTalki・60 min
No more lessons today
1 client to checkView ›
What cotobo brings together
Five admin tools, brought into cotobo.
Manage everything your one-to-one service needs, from checking availability to preparing invoices.
Separate tools
CalendarClient recordsShared notesFinance sheetInvoices
All in one
cotobo。
One-to-one service management
Appointments & availabilityClientsNotesFinanceBilling
How you manage today
Do these admin problems sound familiar?
Client records
Notes and files for each client are scattered, so I have to search for them every time.
Finance & billing
After every lesson, I copy sales figures into a spreadsheet.
With cotobo
Bring those admin tasks together in one place.
Appointments and availability, client information, shared notes, finance and billing all stay connected in cotobo.
See the product
Core cotobo features
See the actual screens for calendar and availability, client notes, finance and billing.
01 CALENDAR & AVAILABILITY
Find available time and prevent scheduling conflicts.
Connect the Google Calendar or iCal calendar you already use. See its events, cotobo lessons and available slots together.
- No new calendar or duplicate entry needed
- Month, week and availability views
- Check open slots before adding a lesson
DESKTOPMON7 TUE8 WED9 THU10 FRI11 SAT12 SUN13
Calendar。
Calendar connection settingsSep 7 – 13, 20267 available slots this week
MonthWeekAvailability
0911131517
Available13:00–14:00
Mina09:30
Alex11:00
Rui14:30
Available11:00–12:30
Sofia09:30
Personal16:00
Available11:00–12:30
Nora09:30
Leo13:30
Available12:30–14:00
Personal10:30
Available09:00–10:30
Ken11:00
Yuri14:00
Available12:30–14:00
Mika10:00
Available10:00–11:30
MOBILE
Calendar。
September 2026
MonthDayAvailability
M7T8W9T10F11S12S13
Available time3 slots today
09:00–10:0013:00–14:3016:30–18:00
Sun, Sep 132 events
10:00–11:00MinaConversation · 60 min
14:30–15:30PersonalGoogle Calendar
02 CLIENT NOTES
Keep each client’s records in one shared notebook.
Each client has one notebook. Both of you can write in it and continue from the same page next time.
- Share without requiring a client account
- Search, export and share files
DESKTOP
September session
What we worked on
Reviewed the presentation and clarified the next action.
- Revise the opening
- Practice the final section
Next time: review the revised version.
MOBILE
MMina’s notes
NotesWords
GoalPresent with confidence
BIUH1H2•Saved
September session
What we worked on
Reviewed the presentation and clarified the next action.
- Revise the opening
- Practice the final section
Next time: review the revised version.
03 FINANCE & BILLING
Calculate finance figures from lesson records and prepare invoices.
Lesson records become your monthly figures, including confirmed and upcoming income.
- Sales, income and profit shown separately
- Invoices managed on their own screen
DESKTOP
Finance。
OverviewDetailsExpensesExport
Profit estimate this month¥238,900
Confirmed ¥164,500Scheduled ¥74,400
Money flow (this month)
Lesson sales¥312,000
− Fees−¥35,600
− Other business expenses−¥37,500
＝ Profit¥238,900
Lesson sales¥312,000confirmed ¥226,000 + scheduled ¥86,000
Lesson income¥276,400confirmed ¥202,000 + scheduled ¥74,400
Profit¥238,900confirmed ¥164,500 + scheduled ¥74,400
Lessons3827 confirmed + 11 scheduled
Average per day¥11,376/day
Average lesson hourly¥7,890/h
MOBILEProfit estimate this month¥238,900
Finance。
September 2026
Confirmed ¥164,500Scheduled ¥74,400
Lesson sales¥312,000
Lesson income¥276,400
Lessons38
Hourly average¥7,890/h
Money flow
Lesson sales¥312,000
Fees−¥35,600
Business expenses−¥37,500
Profit¥238,900
For language lessons
Look up a word during the lesson and save it straight away.
Select a word in the note to check its meaning and reading, then add it to the student’s vocabulary list.
- Dictionary and translation
- Furigana and parts of speech
- A vocabulary list for each student
Making plans for the weekend
〜つもりです = plan to / intend to
週末は 美術館へ 行くつもりです。
Select a word to look it up
DICTIONARY
予定
よてい・名詞plan; schedule
予定よていplan / schedule
Who it is for
For language teachers, coaches, consultants and online instructors.
Use it to manage the scheduling, records, sharing and rates common to recurring one-to-one services.
WORKSCHEDULERECORDSHAREMONEY
Language teacherRecurring lessonsNotes & vocabularyMaterialsRates & FX
Coach / mentorRegular callsGoals & actionsWorksheetsPackages & billing
ConsultantClient meetingsMeeting historyReports & proposalsRates & invoices
Online instructorPrivate classesProgress & historyCourse filesFees & sessions
File library
Note templates
Session packages
Follow-up reminders
Shared comments
Currencies & FX
FAQ
Questions before joining
What kinds of work is cotobo for?＋
It is for people who provide recurring one-to-one services online, including language teachers, instructors, coaches, mentors and consultants.
Do clients need an account?＋
No. Clients use a private link issued by the provider to open shared notes, files and schedules.
Can I combine multiple calendars?＋
Yes. Google Calendar and iCal events can be viewed together, including availability after events and buffers are removed.
Can each client have a different rate?＋
Yes. Duration, currency and platform fees are explicitly managed for each client. Clients without a rate remain clearly unset.
Can we edit the shared note together?＋
Yes. Both sides can edit the same note, return to it after the session and continue from it next time.
Are there features for language lessons?＋
Yes. Dictionary, translation, furigana, parts of speech and vocabulary lists are built into the lesson workflow.
Beta testers wanted
Try cotobo in your real one-to-one service work.
The beta starts in November 2026 and runs for two to three months. Testers who complete it keep cotobo free for life.