# OLI vs Sulcarbon

The clearest difference is review sentiment: Sulcarbon at 100% against OLI's 67%. Sulcarbon also leads on update cadence (daily vs every 9 days) and monetization model (free vs free with in-app purchases). 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.

OLI ships an update every 9 days, Sulcarbon daily. The most recent releases landed on October 7, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | OLI | Sulcarbon |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 66.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 days | **Daily** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 35 MB | 6 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | +17 |
| Developer | [PecLub](https://appshunter.io/developer/1697013566) | [Sulcarbon](https://appshunter.io/developer/1709130192) |

## What reviewers say

### OLI

[App page](https://appshunter.io/ios/app/oli/id6451156427)

This app provides a comprehensive video and text database for preventive maintenance of automatic vehicle transmissions. It guides technicians through fluid changes, filter replacements, and additive applications, ensuring efficiency and confidence in their work.

**Highlights:** Video and text database for maintenance procedures, Fluid change guidance by manufacturer, model, and year, Fluid and additive recommendations, Filter and oil pan indication, Maintenance interval and service time estimates, Step-by-step video tutorials

**Features:** Vision Pro support

**In-app purchases:** none


### Sulcarbon

[App page](https://appshunter.io/ios/app/sulcarbon/id6467768752)

Access a digital catalog of industrial products, manage favorites, and find local representatives. View technical sheets, discover new releases, and receive launch notifications. The app personalizes product suggestions for a unique user experience.

**Highlights:** Digital product catalog, Add products to favorites, Find local representatives, View technical sheets, Discover new product releases, Receive launch notifications, Personalized product suggestions

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

**In-app purchases:** none


## Frequently asked questions

### Is OLI free?

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

### Is Sulcarbon free?

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

### Do OLI or Sulcarbon have ads?

Neither OLI nor Sulcarbon shows ads.

### Which is updated more often, OLI or Sulcarbon?

OLI ships an update every 9 days, and Sulcarbon daily. Most recently, OLI was updated on October 7, 2026 and Sulcarbon on October 12, 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.*