# Si vs Seitron Smart Analysis

The clearest difference is rating: Seitron Smart Analysis at 5.0 against Si's 1.0. Seitron Smart Analysis also leads on update cadence (weekly vs every 2 months). Si's advantage is review sentiment (33% vs 0%) and iOS requirement (12.4 vs 14.0). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Seitron Smart Analysis holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews complicate that: 33% of Si's written reviews are positive against 0% of Seitron Smart Analysis's, so the app with the better star average is not the one people write more warmly about.

Si ships an update every 2 months, Seitron Smart Analysis weekly. The most recent releases landed on June 2, 2026 and June 5, 2026 respectively.

## The numbers

| Metric | Si | Seitron Smart Analysis |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/si-manifold/id1294563130/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/seitron-smart-analysis/id1449017796/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | **33.3% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Free | Free |
| Size | 87 MB | 70 MB |
| Requires iOS | **12.4** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SAUERMANN INDUSTRIE](https://appshunter.io/developer/1169513729) | [Seitron Spa](https://appshunter.io/developer/1222487753) |

## What reviewers say

### Si

[App page](https://appshunter.io/ios/app/si-manifold/id1294563130)

Instantly and accurately displays numerous measurements like pressure and temperature for specific devices. It supports long-range Bluetooth connectivity and can store and update approximately 120 refrigerants, including environmentally friendly options.

**Highlights:** Real-time measurement display, Bluetooth 4.2 connectivity (up to 30m), Storage for ~120 refrigerants, Environmentally friendly refrigerant support, Updateable refrigerant database

**In-app purchases:** none


### Seitron Smart Analysis

[App page](https://appshunter.io/ios/app/seitron-smart-analysis/id1449017796)

Connect to your combustion analyzer via Bluetooth to view live data, start analyses, and generate reports in various formats. Store and print your findings directly from your smartphone or tablet.

**Highlights:** Bluetooth connectivity, Live analysis data display, Start analysis remotely, Generate CSV, PDF, XML reports, Store analysis data, Print analysis reports

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

**In-app purchases:** none


## Frequently asked questions

### Is Si free?

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

### Is Seitron Smart Analysis free?

Seitron Smart Analysis is free to download, with no in-app purchases.

### Which has better reviews, Si or Seitron Smart Analysis?

Seitron Smart Analysis is rated higher. Si averages 1.0 out of 5 from 1 ratings, while Seitron Smart Analysis averages 5.0 from 1 ratings.

### Do Si or Seitron Smart Analysis have ads?

Neither Si nor Seitron Smart Analysis shows ads.

### Which is updated more often, Si or Seitron Smart Analysis?

Si ships an update every 2 months, and Seitron Smart Analysis weekly. Most recently, Si was updated on June 2, 2026 and Seitron Smart Analysis on June 5, 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.*