# Jam Family Calendar vs CalStack

The clearest difference is price: Jam Family Calendar at Free against CalStack's $9.99. Jam Family Calendar also leads on iOS requirement (15.0 vs 18.0). CalStack's advantage is in-app purchases (none vs 4). On update cadence, ads and device support there is nothing between them.

Jam Family Calendar is free to download; CalStack costs $9.99 up front. Jam Family Calendar sells 4 in-app purchases, starting at $15.99 per month. CalStack asks for nothing beyond the download.

Jam Family Calendar ships an update weekly, CalStack every 8 days. The most recent releases landed on November 7, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Jam Family Calendar | CalStack |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | **[4.7 (229 ratings)](https://appshunter.io/ios/app/jam-family-calendar/id6449090626/reviews)** | — |
| Number of ratings | **229** | — |
| Positive reviews | 83.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 8 days |
| Monetization | Free with in-app purchases | — |
| Size | 57 MB | 23 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, Mac, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Jam Life, Inc](https://appshunter.io/developer/1687658177) | [Pick Two Productions Inc](https://appshunter.io/developer/1860419697) |

## What reviewers say

### Jam Family Calendar

[App page](https://appshunter.io/ios/app/jam-family-calendar/id6449090626)

This app helps families stay organized by combining calendars, to-do lists, and shopping lists in one place. It allows for easy event creation, task delegation, and shared shopping. Features like automatic event population from emails and driver assignment simplify family coordination.

**Highlights:** Shared family calendars, Event creation and delegation, Personal and family to-do lists, Shared shopping lists, Automatic event population from emails, Driver assignment for events, Customizable reminders

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Jam Monthly Family Membership | $15.99 | per month |
| Jam Monthly Family Membership | $15.99 | per month |
| Jam Annual Family Membership | $119.99 | per year |
| Jam Annual Family Membership | $119.99 | per year |

**What reviewers like**

- 🚀 Keeps family organized
- 👍 Intuitive and user-friendly
- 🙌 Helpful for busy families
- 🔗 Syncs with external calendars
- 📋 Useful to-do and shopping lists

**What reviewers complain about**

- 💰 Subscription-based model
- 🔍 Limited color palette for multiple family members
- 🐛 Occasional bugs and glitches

**Reported bugs**

- Issues with adding and removing recurring events
- Errors when logging in and accessing data

**Requested features**

- Ability to set recurring events with end dates
- Option to customize calendar views
- Integration with meal planning and recipe features
- Search function within the calendar


### CalStack

[App page](https://appshunter.io/ios/app/calstack/id6789672345)

**Features:** Apple Watch app, Vision Pro support, iPhone Duo support

**In-app purchases:** none


## Frequently asked questions

### Is Jam Family Calendar free?

Jam Family Calendar is free to download, with in-app purchases available.

### Is CalStack free?

CalStack costs $9.99, with no in-app purchases.

### Do Jam Family Calendar or CalStack have ads?

Neither Jam Family Calendar nor CalStack shows ads.

### Which is updated more often, Jam Family Calendar or CalStack?

Jam Family Calendar ships an update weekly, and CalStack every 8 days. Most recently, Jam Family Calendar was updated on November 7, 2026 and CalStack on November 10, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*