# Si vs TSheets

The clearest difference is update cadence: TSheets at weekly against Si's monthly. Si's advantage is iOS requirement (12 vs 15.6). On price, ads, 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.

Si ships an update monthly, TSheets weekly. The most recent releases landed on October 6, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Si | TSheets |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/si-ca-mobileapp/id1471645951/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Weekly** |
| Monetization | Free | — |
| Size | 94 MB | 34 MB |
| Requires iOS | **12** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SAUERMANN INDUSTRIE](https://appshunter.io/developer/1169513729) | [claus Mugabe](https://appshunter.io/developer/1877887891) |

## What reviewers say

### Si

[App page](https://appshunter.io/ios/app/si-ca-mobileapp/id1471645951)

Remotely control and interact with specific combustion gas analyzers via Bluetooth. View real-time data, save measurements, and generate reports in various formats directly from your mobile device.

**Highlights:** Bluetooth connectivity, Real-time data viewing, Save measurements, Generate reports (CSV, PDF, XML), Email reports, Remote control

**In-app purchases:** none


### TSheets

[App page](https://appshunter.io/ios/app/tsheets/id6759290323)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Si free?

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

### Is TSheets free?

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

### Do Si or TSheets have ads?

Neither Si nor TSheets shows ads.

### Which is updated more often, Si or TSheets?

Si ships an update monthly, and TSheets weekly. Most recently, Si was updated on October 6, 2026 and TSheets on October 1, 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.*