Remindavo calls your Viettel, Mobifone, or Vinaphone number before every Google Calendar or Outlook event — on ICT (UTC+7), no daylight saving time, anywhere in Vietnam.
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Remindavo calls your +84 mobile number — Viettel, Mobifone, Vinaphone, Vietnamobile, or Reddi — at your chosen lead time before each calendar event. No app to open, no notification to see.
Vietnam stays on Indochina Time year-round. Remindavo reads your calendar's UTC timestamps and calls you at exactly the right local time — no seasonal adjustment, no configuration needed.
Connect once with your Google or Microsoft account. Every event on your calendar — client calls, standups, investor meetings, government appointments — automatically gets a reminder call.
Create your account with Google or Microsoft. No credit card needed for the 14-day trial.
Authorize Remindavo to read your Google Calendar or Outlook. Events sync automatically.
Enter your Viettel, Mobifone, or Vinaphone number. Remindavo places a test call immediately to confirm delivery.
Choose your lead time — 5, 10, 15, or 30 minutes — and Remindavo calls your phone before every event on your calendar.
Remindavo calls are delivered via Twilio's global voice network, which connects to all Vietnamese mobile operators through international interconnect agreements. Whether your number is on Vietnam's largest state-owned carrier or a smaller private network, your reminder call reaches you.
All Vietnamese mobile numbers are 10 digits domestically, starting with 03x, 05x, 07x, 08x, or 09x. To enter your number in Remindavo, select Vietnam (+84) and drop the leading 0:
Remindavo places a test call immediately after you enter your number to confirm delivery before your first reminder is scheduled.
Vietnam has operated on Indochina Time (ICT, UTC+7) continuously since 1975 with no daylight saving time. All cities — Hanoi, Ho Chi Minh City, Da Nang, Hai Phong, Can Tho, Nha Trang, Hue — share the same fixed UTC+7 offset year-round.
ICT is 6 hours ahead of GMT (UTC+0) in winter and 6 hours ahead of BST (UTC+1) in summer — a constant 6-hour gap to the UK year-round, since neither country observes the same DST shift. When London is 09:00, Hanoi is 15:00 ICT, regardless of season.
Hanoi is 11 hours ahead of US Eastern Standard Time (EST, UTC−5) and 12 hours ahead of US Eastern Daylight Time (EDT, UTC−4). Versus US Pacific: 15h ahead (PST) or 16h ahead (PDT). A 9:00 AM EST call in New York is 8:00 PM ICT in Hanoi.
Vietnam (ICT, UTC+7) is the same zone as Thailand, Cambodia, and Laos. It is 1 hour behind Singapore and Malaysia (UTC+8). It is 2 hours behind the Philippines, South Korea, and Japan (UTC+9). It is 1.5 hours behind India (IST, UTC+5:30).
Vietnam's economy is deeply integrated into global supply chains — Samsung Electronics Vietnam, Intel Products Vietnam, LG Electronics, Foxconn, and hundreds of their tier-1 and tier-2 suppliers operate production and coordination calls across Hanoi, Ho Chi Minh City, Hai Phong, and Binh Duong with counterparts in South Korea, Taiwan, the US, and Europe. Missing a cross-timezone coordination call is not a minor inconvenience — it can block a production decision that affects thousands of units.
Ho Chi Minh City's tech and startup ecosystem — VNG Corporation (one of Vietnam's first unicorns), MoMo (top fintech), Tiki (e-commerce), Sky Mavis (Axie Infinity), and a growing cohort of Series A and B companies — coordinates investor calls, partner meetings, and product reviews with counterparts in Singapore, San Francisco, and Tokyo. A missed investor call at a critical fundraise moment has real consequences.
Da Nang's digital nomad and remote work community — some of the most active in Southeast Asia — regularly coordinates calls across four or five time zones simultaneously. The 6-hour fixed offset to the UK, with no DST adjustment, makes Vietnam one of the more predictable zones to calculate — but predictable does not mean you remember every call when you are deep in a coding session at a co-working space in An Thuong or My Khe.
Yes. Remindavo fully supports Vietnamese mobile numbers with the +84 country code across all major Vietnamese mobile operators: Viettel (prefixes 032–039, 086–089, 096–098), Mobifone (070, 076–079, 090, 093), Vinaphone/VNPT (081–085, 091, 094), Vietnamobile (052, 056, 058), and Reddi/Gmobile (059, 099). Enter your number without the leading 0 after selecting Vietnam (+84). For example, 0901 234 567 becomes +84 901 234 567 in Remindavo.
Vietnam operates permanently on Indochina Time (ICT, UTC+7) with no daylight saving time. ICT is shared with Thailand, Cambodia, and Laos. Vietnam is 6 hours ahead of the UK year-round, 1 hour behind Singapore and Malaysia, and 2 hours behind South Korea and Japan. Remindavo reads your calendar's UTC timestamps and calls you at the correct ICT local time before each event — no configuration required beyond setting your device and calendar to Asia/Ho_Chi_Minh (UTC+7).
Yes. Decree 13/2023/NĐ-CP (effective 1 July 2023, administered by the Ministry of Public Security/Bộ Công an) is Vietnam's first comprehensive personal data protection regulation. Remindavo processes the minimum data necessary — calendar event times and titles, and your phone number — under your informed consent. You may request deletion of your data at any time. The PDPD requires 72-hour breach notification to the Ministry and data subject rights including access, correction, and deletion, all of which Remindavo supports.
Yes. All Vietnamese cities share the same time zone (ICT, UTC+7), so Remindavo works identically everywhere in Vietnam — Hanoi, Ho Chi Minh City, Da Nang, Hai Phong, Can Tho, Nha Trang, Hue, Vung Tau, Bien Hoa, and all other cities and provinces. Remote workers in Da Nang coordinating calls with Singapore, Seoul, and London will find Remindavo particularly useful — the 6-hour fixed gap to the UK means early morning calls are easy to calculate but easy to forget when you are focused on work.
Select Vietnam (+84) from the country code dropdown and enter your number without the leading 0. Examples: 0901 234 567 → enter 901 234 567; 0326 789 012 → enter 326 789 012; 0812 345 678 → enter 812 345 678. Remindavo places a test verification call immediately after you add your number to confirm delivery works before your first scheduled reminder.
Start your free 14-day trial. Remindavo calls your Viettel, Mobifone, or Vinaphone number before every Google Calendar or Outlook event — no credit card required.
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