SLCalculation vs Vertical Calendar
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SLCalculation
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Vertical Calendar
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.
- Vertical calendar view
- Holiday and day off coloring
- Notes and color settings
- Reminder notifications
- Bulk operations
- Memo search
- Dark mode
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Vertical calendar (widget compatible). All features are completely free to use. - Vertical/multiple calendars - Holiday/day off color - Notes and color settings - Reminder notification - Color tag setting - Various bulk operations - Memo search - Font size setting - Today's event widget - dark mode URL scheme: verticalcalendar://
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | SLCalculation | Vertical Calendar |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.8 (6 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 6 — better |
| Update frequency | Monthly — better | Every 5 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | — | Ad-supported |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 14.2 — better | 26.0 |
| Further details — not scored | ||
| Size | 19 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | tsuyoshi saito | FugaPiyo Inc. |
In-app purchases
SLCalculation
No in-app purchases
Vertical Calendar
No in-app purchases
Questions
Is SLCalculation free?
Is Vertical Calendar free?
Do SLCalculation or Vertical Calendar have ads?
Which is updated more often, SLCalculation or Vertical Calendar?
Other comparisons
