ROL Assistant vs Renard
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ROL Assistant
This utility app provides a virtual advisor for refining questions and offers extensive unit conversion tools. It also calculates steam properties and line pressure drops for various pipe materials and sizes.
- Virtual refining advisor
- Extensive unit conversions
- Steam properties calculator
- Line pressure drop calculation
- English and Metric units
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ROL Sia: Sia virtual advisor on Refining Online®. Ask Sia your refining question for answers from the Refining Online Q&A. Unit Conversion: Length, Area, Volume, Mass, Density, Pressure, Energy, Power, Temperature, Flowrate, Viscosity, Specific Energy, Heat Flux, Heat Transfer Coefficient, Thermal Conductivity... Steam Properties: Enthalpy, Density, Heat Capacity, Viscosity, Thermal Conductivity of saturated steam, water, and superheated steam. Line Pressure Drop: Single phase line pressure drop calculation for different pipe sizes and materials in English or Metric units.
Renard
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Renard is a free app that lets you easily reduce the size of photos and videos in your gallery. With Renard, you can compress your photos and videos without compromising visual quality. This advanced format helps you save a significant amount of space on your device without losing details. Plus, Renard preserves all your photos’ metadata — such as location, date, and time — keeping them intact during the conversion process.
Screenshots
Verdict
The clearest difference is update cadence: Renard at every 2 weeks against ROL Assistant's every 4 months. ROL Assistant's advantage is iOS requirement (11.4 vs 16.4). On price, ads, in-app purchases and device support 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.
ROL Assistant ships an update every 4 months, Renard every 2 weeks. Both last shipped on September 9, 2026.
| Parameter | ROL Assistant | Renard |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 4 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 11.4 — better | 16.4 |
| Further details — not scored | ||
| Size | 28 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Astron International, Inc. | Andoni Suarez |
In-app purchases
ROL Assistant
No in-app purchases
Renard
No in-app purchases
