# SL Calendar vs UnderText

The clearest difference is in-app purchases: SL Calendar at none against UnderText's 2. SL Calendar also leads on device support (3 vs 1) and iOS requirement (17.0 vs 26.0). UnderText's advantage is update cadence (weekly vs every 9 months). On price and ads there is nothing between them.

Both are free to download. UnderText sells 2 in-app purchases, starting at $2.99 per month. SL Calendar asks for nothing beyond the download.

SL Calendar ships an update every 9 months, UnderText weekly. The most recent releases landed on October 3, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | SL Calendar | UnderText |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (52 ratings)](https://appshunter.io/ios/app/sl-calendar/id1192968779/reviews)** | — |
| Number of ratings | **52** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Weekly** |
| Monetization | Free | — |
| Size | 5 MB | 5 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Charith Gunasekera](https://appshunter.io/developer/1192968778) | [Xuan Tuan Nguyen](https://appshunter.io/developer/1851803746) |

## What reviewers say

### SL Calendar

[App page](https://appshunter.io/ios/app/sl-calendar/id1192968779)

A simple and reliable holiday calendar app for Sri Lanka, offering public, bank, and mercantile holidays. Supports Sinhala, Tamil, and English, with monthly views, reminders, and custom event additions. Ideal for planning around national holidays.

**Highlights:** Sri Lankan public, bank, and mercantile holidays, Monthly calendar view, Multi-language support (Sinhala, Tamil, English), Notifications and reminders, Custom event creation, Apple Watch support, Home screen widgets

**Features:** macOS Compatibility

**In-app purchases:** none


### UnderText

[App page](https://appshunter.io/ios/app/undertext/id6755081094)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| UnderText Premium (monthly) | $2.99 | per month |
| UnderText Premium (Yearly) | $23.99 | per year |


## Frequently asked questions

### Is SL Calendar free?

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

### Is UnderText free?

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

### Do SL Calendar or UnderText have ads?

Neither SL Calendar nor UnderText shows ads.

### Which is updated more often, SL Calendar or UnderText?

SL Calendar ships an update every 9 months, and UnderText weekly. Most recently, SL Calendar was updated on October 3, 2026 and UnderText on October 11, 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.*