# Royal TSi vs A3Calc

The clearest difference is update cadence: Royal TSi at every 3 months against A3Calc's every 18 months. Royal TSi also leads on price ($0.99 vs $1.99). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Royal TSi costs $0.99 and A3Calc $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Royal TSi ships an update every 3 months, A3Calc every 18 months. The most recent releases landed on October 29, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Royal TSi | A3Calc |
| --- | --- | --- |
| Price | **$0.99** | $1.99 |
| Rating | **[2.5 (2 ratings)](https://appshunter.io/ios/app/royal-tsi/id1044634677/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 18.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 18 months |
| Monetization | Paid | — |
| Size | 97 MB | 2 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Royal Apps GmbH](https://appshunter.io/developer/632800471) | [Farren Domenici](https://appshunter.io/developer/583666476) |

## What reviewers say

### Royal TSi

[App page](https://appshunter.io/ios/app/royal-tsi/id1044634677)

Access and manage your remote systems securely from your mobile device. Connect via RDP, VNC, SSH, and more, or use Royal Server to manage Windows events, services, and processes directly.

**Highlights:** Secure RDP, VNC, SSH, Telnet connections, Cloud storage integration (iCloud, Dropbox, Google Drive), Manage Windows Events, Services, and Processes, Execute PowerShell scripts remotely, Optimize connections for mobile devices, Open Royal TS documents

**Features:** Vision Pro support

**In-app purchases:** none


### A3Calc

[App page](https://appshunter.io/ios/app/a3calc/id1340952531)

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

**In-app purchases:** none


## Frequently asked questions

### Is Royal TSi free?

Royal TSi costs $0.99, with no in-app purchases.

### Is A3Calc free?

A3Calc costs $1.99, with no in-app purchases.

### Do Royal TSi or A3Calc have ads?

Neither Royal TSi nor A3Calc shows ads.

### Which is updated more often, Royal TSi or A3Calc?

Royal TSi ships an update every 3 months, and A3Calc every 18 months. Most recently, Royal TSi was updated on October 29, 2026 and A3Calc on October 26, 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.*