# CalMate vs Stacked

The clearest difference is in-app purchases: CalMate at none against Stacked's 1. Stacked's advantage is update cadence (daily vs every 13 months) and iOS requirement (15.5 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Stacked sells 1 in-app purchase, starting at $24.99 per year. CalMate asks for nothing beyond the download.

CalMate ships an update every 13 months, Stacked daily. The most recent releases landed on October 8, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | CalMate | Stacked |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (4 ratings)](https://appshunter.io/ios/app/calmate/id882844148/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 13 months | **Daily** |
| Monetization | Free | — |
| Size | 1 MB | 74 MB |
| Requires iOS | 26.0 | **15.5** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Ignite Development, LLC](https://appshunter.io/developer/882844151) | [Neuvo WebTech LLP](https://appshunter.io/developer/1879478100) |

## What reviewers say

### CalMate

[App page](https://appshunter.io/ios/app/calmate/id882844148)

Enhance your iPhone calendar experience by forwarding events to others and replying to all attendees directly from your device. This app brings long-awaited functionality to your existing calendar.

**Highlights:** Forward calendar events, Reply to all attendees, Directly from iPhone, Enhances native calendar

**Features:** Vision Pro support

**In-app purchases:** none


### Stacked

[App page](https://appshunter.io/ios/app/stacked-library-management/id6760178801)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stacked Premium Yearly | $24.99 | per year |


## Frequently asked questions

### Is CalMate free?

CalMate is free to download, with no in-app purchases.

### Is Stacked free?

Stacked is free to download, with in-app purchases available.

### Do CalMate or Stacked have ads?

Neither CalMate nor Stacked shows ads.

### Which is updated more often, CalMate or Stacked?

CalMate ships an update every 13 months, and Stacked daily. Most recently, CalMate was updated on October 8, 2026 and Stacked on October 25, 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.*