Gridwatch vs PUWER Assessment
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Gridwatch
Monitor real-time energy demand and electricity supply sources for the UK. Track current and past consumption levels to understand grid performance.
- Live UK energy demand metrics
- Electricity supply source breakdown
- Current consumption levels
- Historical consumption data
- Grid performance insights
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Get live energy demand metrics for the UK and from which sources the electricity is supplied to the grid. View current and historical consumption levels.
PUWER Assessment
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PUWER Assessment is a mobile app designed to help organisations complete PUWER assessments quickly, accurately, and consistently. The app guides users through structured checklists covering machinery, equipment, and workplace safety requirements, making it easier to identify non-compliances and document risks. Built for real-world use on factory floors and industrial sites, the app keeps assessments organised, links information across machines and locations, and supports efficient recording of findings. Use PUWER Assessment to streamline safety checks, improve record-keeping, and support compliance with PUWER 98 regulations.
Screenshots
Verdict
The clearest difference is device support: Gridwatch at 5 against PUWER Assessment's 3. On price, update cadence, 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.
Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on November 3, 2026 and November 9, 2026 respectively.
| Parameter | Gridwatch | PUWER Assessment |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 66.7% of reviews | — |
| Update frequency | Every 3 months | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod, Apple TV, Apple Watch — better | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 8 MB | 37 MB |
| Age rating | 4+ | 4+ |
| Developer | Carl de Wiele | Knox Thomas Ltd |
In-app purchases
Gridwatch
No in-app purchases
PUWER Assessment
No in-app purchases
