Comparison

Vimcal vs Groupthink Assistant

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Vimcal

This calendar app streamlines scheduling for busy professionals and teams using AI and intuitive features. It offers agentic scheduling, time zone management, and a clean interface to boost productivity.

Highlights
  • Agentic scheduling with AI
  • Time zone conversion (Time Travel)
  • Availability sharing (Slots)
  • Meeting decluttering (Rainbow Events)
  • Fast and intuitive UI
  • Team scheduling capabilities
Features
Read full description

Vimcal is the ultimate calendar designed for busy professionals and their teams. We invested two years into understanding the pain points of our first 10,000 users through 1:1 Zoom calls. This allowed us to map out all the different scenarios of corporate scheduling. The result? The world's fastest and most intuitive calendar app, built to streamline scheduling and boost your productivity at work, as well as the most robust harness for agentic scheduling. In Vimcal, you can accomplish anything you would in another calendar, but in half the steps or fewer and with no error. AGENTIC SCHEDULING Scheduling with voice, screenshots, or your AI personal assistant. Vimcal holds proprietary context about your meetings such as whether it's internal vs external, how important it is, or how many times it's already been rescheduled. Vimcal provides you the sturdiest guardrails for your time. BUILT FOR TEAMS Scheduling with your team is so much more complicated than just seeing what's open or blocked on the calendar. When your entire team uses Vimcal, all of Vimcal's context allows for the most accurate scheduling that aligns with everyone's schedules. NO MORE TIME ZONE PROBLEMS Time Travel — Find the best time between you and any other time zone in the world without any mental math. SCHEDULE WITH A PERSONAL TOUCH Slots — Sending a booking link feels transactional, but typing out your free times instead is tedious. Get the best of both worlds with our drag-and-copy availability feature! DECLUTTER BEAUTIFULLY Rainbow Events — No one likes seeing a full calendar. Let Vimcal take care of unnecessary meetings and declutter your mind. BUTTERY SMOOTH EVERYTHING 100ms Rule — We obsessively test every tap and interaction to give you the silkiest, fastest mobile experience. Upgrade your productivity and take control of your schedule with Vimcal. Download now and revolutionize the way you manage your time.

About

Groupthink Assistant

This app acts as a personal memory for your contacts, organizing information about individuals and past conversations. It helps you prepare for interactions by providing summaries of what you know, your history, and outstanding tasks. The app also helps manage your daily schedule and allows for quick note-taking or recording of conversations, linked to specific people.

Highlights
  • One page per person profile
  • Track conversation history
  • Manage outstanding tasks
  • Daily schedule overview
  • Quick note and recording capture
  • Personalized contact reminders
Features
Read full description

Groupthink is a memory for the people in your life and work. Before you talk to someone, open their page. You'll see what you know about them, what you talked about last time, and what you said you'd do. ONE PAGE PER PERSON What you know, your history together, and the threads still open. New facts from your notes wait for you to confirm them. Set how often you want to stay in touch and see who's overdue. YOUR DAY Today shows your meetings, who's in them, and what to bring up with each person. CAPTURE IN A TAP Record a conversation or jot a quick note. Groupthink files it on the right person. ASK ABOUT ANYONE The Advisor answers questions like "what do I owe people this week?" and "when did I last see Dana?" Free brings in 12 months of calendar history. Pro brings in up to 3 years and adds the Advisor, after a 30-day free trial. Groupthink Pro is $25/month, renews monthly until you cancel. New accounts start with a 30-day free trial. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://groupthink.com/privacy

Screenshots

Vimcal4 screens
Groupthink Assistant4 screens

Verdict

The call

The clearest difference is in-app purchases: Vimcal at none against Groupthink Assistant's 1. Vimcal also leads on ratings volume (470 vs 2) and update cadence (every 6 days vs every 3 weeks). Groupthink Assistant's advantage is rating (5.0 vs 4.7) and iOS requirement (18.0 vs 26.1). On price, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Groupthink Assistant sells 1 in-app purchase, starting at $25.00 per month. Vimcal asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Groupthink Assistant holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Vimcal has 470 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

Vimcal ships an update every 6 days, Groupthink Assistant every 3 weeks. Both last shipped on October 30, 2026.

Scorecard6 real differences · 4 level
Vimcal versus Groupthink Assistant: the parameters behind the verdict, then further details
ParameterVimcalGroupthink Assistant
PriceFreeFree
Rating4.7 (470 ratings)5.0 (2 ratings) — better
Positive reviews52.2% of reviews—
Number of ratings470 — better2
Update frequencyEvery 6 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPadiPhone, iPad
Requires iOS26.118.0 — better
Further details — not scored
Size73 MB31 MB
Age rating4+4+
DeveloperVimcal Inc.Groupthink

Customer experience

Vimcal

All ratings470 ratings
Positive91.1%
Neutral2.1%
Negative6.8%
Written reviews67 reviews
Positive52.2%
Neutral10.4%
Negative37.3%

Groupthink Assistant

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Vimcal

Reported bugs

4 issues
  • Scheduling links broken
  • Randomly deleting meetings
  • Inability to update meeting details
  • Widget not showing all events

Requested features

5 requests
  • Integration with iCloud and other calendar services
  • Full year view
  • Better widget functionality
  • Ability to feed external data into the calendar
  • Apple Watch support

Groupthink Assistant

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Vimcal

No in-app purchases

1 purchases

Groupthink Assistant

Subscriptions1
  • Groupthink Pro$25.001 Month

Questions

Is Vimcal free?
Vimcal is free to download, with no in-app purchases.
Is Groupthink Assistant free?
Groupthink Assistant is free to download, with in-app purchases available.
Which has better reviews, Vimcal or Groupthink Assistant?
Groupthink Assistant is rated higher. Vimcal averages 4.7 out of 5 from 470 ratings, while Groupthink Assistant averages 5.0 from 2 ratings.
Do Vimcal or Groupthink Assistant have ads?
Neither Vimcal nor Groupthink Assistant shows ads.
Which is updated more often, Vimcal or Groupthink Assistant?
Vimcal ships an update every 6 days, and Groupthink Assistant every 3 weeks. Most recently, Vimcal was updated on October 30, 2026 and Groupthink Assistant on October 30, 2026.

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