Saybolt Viscosity vs Transport4
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Saybolt Viscosity
This application serves as a calculator for converting viscosity and temperature values for petroleum fuels. It allows users to convert Kinematic Viscosity in Centistokes to desired target values across different temperature scales. In landscape mode, it transforms into a slider for visual comparison of viscosity units.
- Viscosity/Temperature conversion calculator
- Converts Kinematic Viscosity (cSt)
- Supports Fahrenheit and Celsius
- Landscape slider for unit comparison
- Compares Centistokes to Saybolt Universal Seconds and Furol
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Welcome to the Viscosity/Temperature conversion app developed by Saybolt. This App is a handy Viscosity/Temperature conversion calculator for petroleum fuels. The calculator converts the Kinematic Viscosity in Centistokes (cSt) at a reference Temperature in Fahrenheit or Celcius to the desired target value. The App changes into a traditional Viscosity/Temperature slider when the mobile device is held in landscape position. By reading the slider scale under the hairline Kinematic Viscosity units can be compared, such as the Saybolt Universal Seconds or Saybolt Seconds Furol, with the nowadays more widely used Centistokes. Temperature and viscosity conversions with the slider are indicative.
Transport4
Access your work schedules, nominations, and tickets on the go. Customize your view to see only the data relevant to your security profile. This business tool streamlines access to essential information from your mobile device.
- Access nominations
- View schedules
- Manage tickets
- Customizable profiles
- Mobile access
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T4 Mobile is the latest innovation from Transport4. Access your Nominations, Schedules, and Tickets from your mobile device. Profiles allow you to build a custom lens based on your security to quickly see the data you care about.
Screenshots
Verdict
The clearest difference is rating: Transport4 at 5.0 against Saybolt Viscosity's 3.0. Transport4 also leads on update cadence (every 2 months vs every 14 months). Saybolt Viscosity's advantage is iOS requirement (9.3 vs 16.6). On price, ratings volume, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Transport4 holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.
Saybolt Viscosity ships an update every 14 months, Transport4 every 2 months. The most recent releases landed on November 1, 2026 and November 4, 2026 respectively.
| Parameter | Saybolt Viscosity | Transport4 |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) | 5.0 (1 ratings) — better |
| Number of ratings | 2 — better | 1 |
| Update frequency | Every 14 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 9.3 — better | 16.6 |
| Further details — not scored | ||
| Size | 3 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | Saybolt International B.V. | Transport4 |
Customer experience
Saybolt Viscosity
Transport4
In-app purchases
Saybolt Viscosity
No in-app purchases
Transport4
No in-app purchases
