# しまっぷ vs Calendoc

The clearest difference is in-app purchases: しまっぷ at none against Calendoc's 2. しまっぷ also leads on iOS requirement (16.1 vs 18.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Calendoc sells 2 one-off in-app purchases. しまっぷ asks for nothing beyond the download.

Both ship on a similar rhythm, roughly weekly. Both last shipped on October 31, 2026.

## The numbers

| Metric | しまっぷ | Calendoc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | Weekly |
| Size | 78 MB | 18 MB |
| Requires iOS | **16.1** | 18.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [n3u](https://appshunter.io/developer/1887145263) | [Toshiki Izumi](https://appshunter.io/developer/1729717097) |

## What reviewers say

### しまっぷ

[App page](https://appshunter.io/ios/app/id6760984089)

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

**In-app purchases:** none


### Calendoc

[App page](https://appshunter.io/ios/app/calendoc-parallel-calendars/id6791646438)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 14-day Trial | Free | one-time |
| Calendoc Pro | $19.99 | one-time |


## Frequently asked questions

### Is しまっぷ free?

しまっぷ is free to download, with no in-app purchases.

### Is Calendoc free?

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

### Do しまっぷ or Calendoc have ads?

Neither しまっぷ nor Calendoc shows ads.

### Which is updated more often, しまっぷ or Calendoc?

しまっぷ ships an update weekly, and Calendoc weekly. Most recently, しまっぷ was updated on October 31, 2026 and Calendoc on October 31, 2026.

---

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