Kelvin TOP vs Prolius
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Kelvin TOP
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Solve Problems and Investigate All Types of Incident. Based on the proven Kelvin TOP-SET Incident Investigation System, this App guides you through the step by step process and helps you quickly and effectively get to the real root causes of incidents and to make recommendations to prevent recurrence. Know what you are investigating – Write an accurate Incident Statement to give you and your team the right direction. Plan your investigation using the TOP-SET Indicators (T – Technology, O – Organisation, P – People, S – Similar Events & T – Time). Efficiently use resources to gather data related to your investigation. Investigate: Guide your investigation and use as a prompt / tool to ensure ‘nothing gets missed’. Advice is given at key stages to keep you on track. Analyse your Investigation findings using the TOP-SET Root Cause Analysis approach; with helpful tips to establish validity of your Immediate, Underlying and Root Causes. Report and Recommendations: Making evidence-based recommendations is an essential part of the Incident Investigation Process. Advice on how best to make these and what a good Incident Investigation Report should contain is given. The TOP-SET App designed ‘by Investigators for Investigators’ who have attended a Kelvin TOP-SET Course is an essential Incident Investigation Tool to keep with you always.
Prolius
Streamline fleet operations with a centralized management platform. Improve vehicle compliance, gain real-time data insights, and boost productivity while reducing paperwork and costs. Enhance safety with DVSA-compliant features.
- Centralized fleet management
- Real-time data insights
- Streamlined digital processes
- Reduced paperwork and admin
- Improved safety compliance
- Cost reduction through efficiency
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Seamlessly manage your fleet operations from a single centralised management platform. The Prolius Fleet Management system offers a fully integrated suite of modules for all classes of vehicles to improve vehicle compliance and fleet performance - providing a greater understanding of your fleet operations using real-time data. The Prolius app is designed to provide: Increase productivity Digitally streamline processes with our easy-to-use platform, saving time optimising workflows and increasing overall fleet productivity. Reduced paperwork Reduce unnecessary paperwork and save time on admin and manual tasks through the use of automated reports and workflows. Complete visibility Track all your assets and workflows to optimise your fleet and gain complete visibility across your entire fleet operations from a single place. Reduce costs Significantly reduce fleet operational costs by monitoring data insights and implementing measures to increase the efficiency of your fleet. Improve safety compliance Our DVSA-compliant system ensures the safety of your fleet through regular maintenance checks, audits and driver monitoring. Data insights Use real-time data to make more informed decisions, quicker and improve efficiency across your operations.
Screenshots
Verdict
The clearest difference is update cadence: Prolius at every 6 weeks against Kelvin TOP's every 3 months. 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.
Kelvin TOP ships an update every 3 months, Prolius every 6 weeks. The most recent releases landed on October 26, 2026 and November 4, 2026 respectively.
| Parameter | Kelvin TOP | Prolius |
|---|---|---|
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| Update frequency | Every 3 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.4 | 15.0 — better |
| Further details — not scored | ||
| Size | 45 MB | 56 MB |
| Age rating | 4+ | 4+ |
| Developer | KelvinTOPSET | Prolius Limited |
In-app purchases
Kelvin TOP
No in-app purchases
Prolius
No in-app purchases









