# Stamp Duty vs sked

The clearest difference is in-app purchases: Stamp Duty at none against sked's 1. Stamp Duty also leads on device support (3 vs 1) and iOS requirement (12 vs 17.0). sked's advantage is ads (none vs shown) and update cadence (every 3 weeks vs every 2 months). On price there is nothing between them.

Both are free to download. sked sells 1 in-app purchase, starting at $4.99 per year. Stamp Duty asks for nothing beyond the download.

Stamp Duty ships an update every 2 months, sked every 3 weeks. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Stamp Duty | sked |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/sked-shared-schedules/id6790993674/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | **Ad-supported** | Freemium |
| Size | 50 MB | 16 MB |
| Requires iOS | **12** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Novanet Solutions](https://appshunter.io/developer/1482778283) | [MARK RAPHAEL STO. DOMINGO](https://appshunter.io/developer/6781156966) |

## What reviewers say

### Stamp Duty

[App page](https://appshunter.io/ios/app/stamp-duty/id1532047009)

This app helps users calculate stamp duty for property purchases in Singapore. It covers residential and non-residential properties, company shares, and allows verification of stamp duty certificates and checking outstanding amounts.

**Highlights:** Calculate residential stamp duty, Calculate non-residential stamp duty, Calculate company shares stamp duty, Verify stamp duty certificate, Check outstanding stamp duty amount

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

**In-app purchases:** none


### sked

[App page](https://appshunter.io/ios/app/sked-shared-schedules/id6790993674)

Easily share class schedules with student groups and see when blockmates are available. Quickly join or create groups, add class details, and check real-time availability without constant chat notifications.

**Highlights:** Join or start groups, Add class details, See real-time availability, Configurable visibility, Optional Pro subscription

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| sked Pro | $4.99 | per year |


## Frequently asked questions

### Is Stamp Duty free?

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

### Is sked free?

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

### Do Stamp Duty or sked have ads?

Stamp Duty shows ads; sked does not.

### Which is updated more often, Stamp Duty or sked?

Stamp Duty ships an update every 2 months, and sked every 3 weeks. Most recently, Stamp Duty was updated on October 29, 2026 and sked on October 25, 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.*