# Planfect vs CalStack

The clearest difference is price: Planfect at Free against CalStack's $9.99. CalStack's advantage is update cadence (every 5 days vs fortnightly) and device support (4 vs 1). On ads, in-app purchases and iOS requirement there is nothing between them.

Planfect is free to download; CalStack costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Planfect ships an update fortnightly, CalStack every 5 days. The most recent releases landed on October 1, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Planfect | CalStack |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 5 days** |
| Size | 5 MB | 20 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone | **iPhone, iPad, Mac, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [可菁 闫](https://appshunter.io/developer/6781106318) | [Pick Two Productions Inc](https://appshunter.io/developer/1860419697) |

## What reviewers say

### Planfect

[App page](https://appshunter.io/ios/app/planfect/id6781118366)

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

**In-app purchases:** none


### CalStack

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

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

**In-app purchases:** none


## Frequently asked questions

### Is Planfect free?

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

### Is CalStack free?

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

### Do Planfect or CalStack have ads?

Neither Planfect nor CalStack shows ads.

### Which is updated more often, Planfect or CalStack?

Planfect ships an update fortnightly, and CalStack every 5 days. Most recently, Planfect was updated on October 1, 2026 and CalStack on October 9, 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.*