# SoStack — Group Chat with a Calendar

> Group chat and calendar coordination for real-world communities and private groups. (iPhone/iPad app by SOSTACK LIMITED LIABILITY COMPANY.)

- Source: https://appshunter.io/ios/app/sostack/id6759353874 (this page in markdown: same URL + `.md`)
- Developer: [SOSTACK LIMITED LIABILITY COMPANY](https://appshunter.io/developer/1878252494)
- Category: Social Networking, Productivity
- Price: Free
- Rating: 5.00/5 from 3 App Store ratings · 2 written reviews indexed
- Age rating: 12+
- Requires: iOS 15.1 · 43 MB
- Languages: American English
- Released: 2026-03-29
- Data updated: 2026-09-23
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/sostack/id6759353874/reviews.md

## What is SoStack?

SoStack is a communication and coordination platform built for real-world groups. Create private group chats, plan together with shared calendars, and follow verified public groups to stay up to date on what’s happening near you.
What you can do with SoStack
Private group messaging: Create 1:1 and group chats for friends, teams, families, and communities.
Shared calendars + events: Create events in group calendars, add events to your own calendar view, and keep plans in one place.
RSVP and planning: Mark events as interested/going and coordinate details with your group.
Discover and follow public groups (SoStack Plus): Find local businesses, organizations, and communities, follow them, and see upcoming events and updates.
Invite by phone: Invite people to private groups via SMS links, and optionally match contacts to existing SoStack users (with permission).
Location-based discovery (optional): Use a city or current location to filter nearby results.
Built with safety and control
Account deletion in-app: Delete your account from Settings.
Privacy-first by design: Messages are protected by access controls, and you control permissions like contacts and location in your device settings.

## Key features

- Private group messaging
- Shared calendars and events
- RSVP and planning tools
- Follow verified public groups
- Invite via SMS
- Location-based discovery

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/sostack/id6759353874/reviews.md

### 5/5 — Calendar reminders -

*2026-06-13*

Calendar reminder: love how easy how just add them.

### 5/5 — Great app

*2026-03-31*

Perfect for family management and planning with friends. We update the calendar with everything we have going on to keep it top of mind and help manage events. I recommend.

## Frequently asked questions about SoStack

### What is SoStack?

SoStack is a communication and coordination platform designed for real-world groups. It offers private group chats, shared calendars for planning events, and the ability to follow verified public groups for local updates.

### How does SoStack handle privacy?

SoStack is privacy-first by design. Messages are protected by access controls, and users have full control over permissions like contacts and location within their device settings. Account deletion is also available in-app.

### Can I invite people to SoStack groups easily?

Yes, you can invite people to private groups via SMS links. The app also offers an option to match contacts to existing SoStack users, provided you have permission.

### What kind of public groups can I follow on SoStack?

You can discover and follow verified public groups such as local businesses, organizations, and communities. This allows you to stay up-to-date on their upcoming events and announcements.

### Is SoStack available on multiple devices?

Based on the provided data, SoStack is supported on iPhone and iPod devices. Further platform compatibility details are not specified.

### How often is SoStack updated?

The latest version of SoStack is 1.0.7, and it was last updated on June 23, 2026. This indicates a recent update, suggesting active development.

### What is the age rating for SoStack?

SoStack has an age rating of 12+. This means it is considered suitable for users aged 12 and older.

### Does SoStack have ads?

No, SoStack does not contain advertisements. The app is free to use and does not feature any in-app advertisements.

## Version history (last 5 releases)

### 1.0.9 — 2026-09-13

Bug fixes and improvements

### 1.0.8 — 2026-08-14

App improvements and performance updates.

### 1.0.7 — 2026-06-23

Bug fixes and improvements.

### 1.0.6 — 2026-06-15

Bug fixes and improvements.

### 1.0.5 — 2026-05-25

Bug fixes and improvements.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-23.*