Remindavo calls your NTT Docomo, au (KDDI), SoftBank, or Rakuten Mobile number before every Google Calendar or Outlook meeting — a real voice call, not a notification you'll miss between standups. Works on JST year-round. No DST, no surprises.
Japanese business culture places exceptional weight on punctuality — arriving late to a meeting is a serious breach of professional etiquette. Remindavo calls your Docomo, au, SoftBank, or Rakuten Mobile number before every meeting so you're always on time.
NTT Docomo, au (KDDI), SoftBank, Rakuten Mobile, and MVNOs including IIJmio, OCN Mobile ONE, mineo, UQ Mobile, and Y!mobile — all +81 numbers are supported.
Japan abolished Daylight Saving Time in 1952. JST is UTC+9 year-round — no spring-forward, no fall-back, no seasonal recalculation. Remindavo reads your calendar events as UTC and calls you at exactly the right JST time, every time.
Connect your calendar in 60 seconds. Every meeting — client calls, team standups, international video conferences, investor meetings — gets an automatic phone call reminder in advance.
Compliant with Japan's Act on the Protection of Personal Information (APPI, 個人情報保護法), enforced by the Personal Information Protection Commission (PPC). EU adequacy decision in force since January 2019.
| Operator | Parent Company | Network Type | Status |
|---|---|---|---|
| NTT Docomo | Nippon Telegraph and Telephone (NTT) | MNO — 4G LTE / 5G (070/080/090) | Supported |
| au (KDDI) | KDDI Corporation | MNO — 4G LTE / 5G (070/080/090) | Supported |
| SoftBank Mobile | SoftBank Group Corp. | MNO — 4G LTE / 5G (070/080/090) | Supported |
| Rakuten Mobile | Rakuten Group, Inc. | MNO — 4G LTE / 5G (070); cloud-native network | Supported |
| IIJmio | Internet Initiative Japan (IIJ) | MVNO (Docomo / au networks) | Supported |
| OCN Mobile ONE | NTT Communications / NTT Docomo | MVNO (Docomo network) | Supported |
| mineo | Optim Corporation | MVNO (Docomo / au / SoftBank — triple-carrier) | Supported |
| UQ Mobile | KDDI Group (au sub-brand) | MVNO / sub-brand (au network) | Supported |
| Y!mobile | SoftBank Group (Yahoo Japan sub-brand) | MVNO / sub-brand (SoftBank network) | Supported |
Create your Remindavo account at web.remindavo.com. 14-day free trial, no credit card required.
Remindavo reads your calendar event times. It never accesses email, file attachments, or meeting content.
Enter your Docomo, au, SoftBank, or Rakuten Mobile number. Remindavo places a test call immediately to confirm delivery to your number.
Remindavo calls your Japanese number at the lead time you choose (2–60 minutes before each event). JST is handled automatically — no time zone configuration needed.
Full access, billed monthly
2 months free vs monthly
Yes. Remindavo fully supports Japanese phone numbers starting with +81, across all four MNOs — NTT Docomo, au (KDDI), SoftBank, and Rakuten Mobile — and the full MVNO ecosystem including IIJmio, OCN Mobile ONE, mineo (triple-carrier), UQ Mobile, and Y!mobile. Mobile numbers use 070/080/090 domestic prefixes; enter your number in international format (+81-70-XXXX-XXXX) or domestic format — Remindavo accepts both. A test call is placed immediately after you add your number to confirm delivery.
Yes. Japan's Act on the Protection of Personal Information (APPI — 個人情報の保護に関する法律), last amended in 2020 (effective April 2022), is enforced by the Personal Information Protection Commission (PPC — 個人情報保護委員会). Japan also holds an EU adequacy decision since January 2019, enabling free personal data flows between Japan and the EU. Remindavo collects only what is necessary to deliver the service — calendar event times and your phone number — and never sells or shares personal data. Request data deletion at any time at web.remindavo.com/delete-account.
Japan uses Japan Standard Time (JST, UTC+9) year-round. Japan abolished Daylight Saving Time in 1952 — JST is permanently fixed at UTC+9 with no seasonal transitions. Remindavo reads your Google Calendar or Outlook event times as absolute UTC timestamps and calls your Japanese number at the correct JST time automatically. No time zone configuration is required.
JST (UTC+9) is fixed year-round. Key offsets: same as Korean Standard Time (KST, UTC+9); 1 hour behind Australian Eastern Standard Time (AEST, UTC+10), 2 hours behind AEDT in southern hemisphere summer; 8 hours ahead of Central European Time (CET, UTC+1) in winter and 7 hours ahead of CEST in summer; 9 hours ahead of UK GMT in winter and 8 hours ahead of BST in summer; 14 hours ahead of US Eastern Standard Time (EST) and 13 hours ahead of EDT. Because Japan has no DST, these offsets shift only when the counterpart time zone transitions — never from the Japanese side. Remindavo handles all UTC arithmetic automatically.
Remindavo is designed for mobile phone numbers — it places a voice call to the number you register. Japanese mobile numbers (070/080/090, +81-70/80/90) work fully. Japanese landlines (+81 followed by a one- or two-digit area code, e.g. 03 for Tokyo, 06 for Osaka, 052 for Nagoya) also receive voice calls technically, but we recommend using your mobile number so the reminder reaches you regardless of where you are when the call fires. Remindavo places a test call during setup to confirm your number is reachable.
Remindavo calls your +81 number before every event on your Google Calendar or Outlook. JST handled automatically, no setup required.
Start 14-Day Free TrialNo credit card required. Cancel anytime.