ETEnergyWorld vs GreyMatter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ETEnergyWorld
Stay updated on India's dynamic energy sector with curated news, expert analysis, and industry reports. Covers policy changes, investments, and renewable energy developments.
- Latest energy sector developments
- Expert views on industry issues
- Relevant news and analysis
- Industry reports and slideshows
- Daily newsletter summary
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Energy in India is among the top business enterprises of its economy and accounts for around 6 to 7% of GDP. The Indian energy market is one of the top five in the world and also amongst the fastest growing across the globe. Energy sector is undergoing a significant change that has redefined the industry outlook. With policy overhauls, government initiatives, major mergers and acquisitions on the table, line up of big investments and focus on renewables, India’s energy sector has become very dynamic. To ensure that industry leaders keep pace with this fast changing exciting industry, ETEnergyworld brings to you the latest developments in the sector. We not only extensively cover the sector but also curate and get you the most relevant news and analysis in the industry that suits your needs. Along with news, ETEnergyWorld also gives you views on latest issues by industry experts, interesting slideshows, polls and various reports from the sector. With many significant industry leaders following us, ETEnergyWorld.com sends out a free daily newsletter to subscribers every morning summarising previous day’s essential news, reports and analysis.
GreyMatter
Master AI with daily personalized briefings on news and research. Structured learning tracks guide you from fundamentals to advanced concepts with adaptive lessons and quizzes. Invest just ten minutes daily to truly understand and excel in artificial intelligence.
- Personalized AI news briefings
- AI research updates
- Structured learning tracks
- Adaptive lessons and quizzes
- Fundamentals to advanced concepts
- Daily 10-minute learning
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GreyMatter is the daily app for getting genuinely good at AI. Personalized briefings cover the latest AI news and research developments. A structured learning track takes you from fundamentals to how models really work, with lessons and quizzes that adapt to your level. Ten minutes a day, and you're not just keeping up with AI - you're actually mastering it. Terms of User (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://app.termly.io/policy-viewer/policy.html?policyUUID=cef74755-eb92-4d4d-9e7d-d2524a7bc8bf
Screenshots
Verdict
The clearest difference is in-app purchases: ETEnergyWorld at none against GreyMatter's 2. GreyMatter's advantage is update cadence (every 8 days vs every 2 months). On price, rating, ratings volume and ads 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. GreyMatter sells 2 in-app purchases, starting at $7.99 per month. ETEnergyWorld asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for ETEnergyWorld against 5.0 for GreyMatter. Both are backed by a comparable volume of ratings — 1 and 2 respectively.
ETEnergyWorld ships an update every 2 months, GreyMatter every 8 days. The most recent releases landed on November 2, 2026 and November 5, 2026 respectively.
| Parameter | ETEnergyWorld | GreyMatter |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (2 ratings) |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 1 | 2 — better |
| Update frequency | Every 2 months | Every 8 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone | iPhone |
| Requires iOS | 16.1 — better | 16.4 |
| Further details — not scored | ||
| Size | 85 MB | 69 MB |
| Age rating | 4+ | 4+ |
| Developer | Times Internet Limited | Moksha Labs LLC |
Customer experience
ETEnergyWorld
GreyMatter
In-app purchases
ETEnergyWorld
No in-app purchases
GreyMatter
- Pro Monthly7 Days trial$7.991 Month
- Pro Annual7 Days trial$71.901 Year
Questions
Is ETEnergyWorld free?
Is GreyMatter free?
Which has better reviews, ETEnergyWorld or GreyMatter?
Do ETEnergyWorld or GreyMatter have ads?
Which is updated more often, ETEnergyWorld or GreyMatter?
Other comparisons
