# SLCalculation vs Vertical Calendar

The clearest difference is ads: SLCalculation at none against Vertical Calendar's shown. SLCalculation also leads on update cadence (monthly vs every 5 months) and iOS requirement (14.2 vs 26.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SLCalculation ships an update monthly, Vertical Calendar every 5 months. The most recent releases landed on October 7, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | SLCalculation | Vertical Calendar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (6 ratings)](https://appshunter.io/ios/app/vertical-calendar-schedule/id6446192313/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Monthly** | Every 5 months |
| Monetization | — | Ad-supported |
| Size | 19 MB | 10 MB |
| Requires iOS | **14.2** | 26.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [tsuyoshi saito](https://appshunter.io/developer/1530882113) | [FugaPiyo Inc.](https://appshunter.io/developer/1497887610) |

## What reviewers say

### SLCalculation

[App page](https://appshunter.io/ios/app/slcalculation/id1541116749)

**Features:** macOS Compatibility

**In-app purchases:** none


### Vertical Calendar

[App page](https://appshunter.io/ios/app/vertical-calendar-schedule/id6446192313)

This productivity app offers a vertical calendar view with customizable holiday colors, notes, and reminder notifications. It supports multiple calendars, bulk operations, and memo search, all accessible through a URL scheme. Enjoy a dark mode and adjustable font sizes for a personalized scheduling experience.

**Highlights:** Vertical calendar view, Holiday and day off coloring, Notes and color settings, Reminder notifications, Bulk operations, Memo search, Dark mode

**In-app purchases:** none


## Frequently asked questions

### Is SLCalculation free?

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

### Is Vertical Calendar free?

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

### Do SLCalculation or Vertical Calendar have ads?

Vertical Calendar shows ads; SLCalculation does not.

### Which is updated more often, SLCalculation or Vertical Calendar?

SLCalculation ships an update monthly, and Vertical Calendar every 5 months. Most recently, SLCalculation was updated on October 7, 2026 and Vertical Calendar on September 28, 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.*