Openchat vs Epetra
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Openchat
This AI assistant offers personalized text and voice interactions, helping with tasks like drafting emails, summarizing articles, and brainstorming creative ideas. It supports multilingual communication and includes an AI art generator and interactive games. Users can customize responses and focus on privacy.
- Advanced AI Assistant
- Personalized Responses
- Smart Task Automation
- Multilingual Voice & Text
- Pro AI Artist (Premium)
- Interactive Games
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OpenChat – Your Personalized AI Assistant Powered by the Best AI Models. Experience the future of AI with a smart, adaptive assistant designed to understand and assist you like never before. Key Features: • Advanced AI Assistant: Get instant, accurate answers to any question, generate creative ideas, or receive expert advice on topics like career, health, and technology. • Personalized Responses: Tailor AI interactions to your style—choose response length (short, medium, long) and tone (casual, professional, humorous, or storytelling). • Smart Task Automation: Create custom AI helpers for daily tasks: - Work: Draft emails, prepare presentations, generate reports. - Learning: Summarize articles, translate languages, explain complex concepts. - Creativity: Brainstorm stories, design marketing copy, generate poetry. - ect • Multilingual Voice & Text: Speak or type in any language for real-time translation, learning, or natural conversations. • Pro AI Artist (Premium): Generate high-quality images from text prompts for social media, artwork, or projects. • Interactive Games: Play Alchemist AI, an inventive game where you combine elements to discover new creations. Why OpenChat Stands Out: • Deep Personalization: Select 3+ interest areas (e.g., Technology, Music, Relationships) to refine AI suggestions. • Adaptive to Your Needs: Whether for quick help, deep research, or entertainment, OpenChat adjusts to your goals. • Privacy-Focused: Your data stays secure; chats are not shared with third parties. PRO Subscription Benefits: • Unlimited access to premium AI models. • Priority response times and advanced features like Pro AI Artist. • Ad-free experience with higher message limits. Subscription: • You can subscribe to a PRO account • The subscription options are 1 week, 1 month, and one year • Subscription will automatically renew for the same price and term as the original "one month", "one year", "one week" package unless auto-renewal is disabled at least 24 hours before the current period expires. • Payment will be charged to the iTunes account upon confirmation of purchase. • Subscriptions can be managed by the user and auto-renewal can be disabled in the user's account settings after purchase. Privacy policy: https://jarvisy.com/privacy-policy Terms and conditions: https://jarvisy.com/terms-of-service
Epetra
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Additionally, users registered with the Ǝ!PETRA system can easily manage the marble blocks produced in the quarry. Please note that the application exclusively serves registered customers. Currently, the block management module is active in our application, and development is ongoing for the other modules. The Twin Marble Quarry is the first digital platform that provides comprehensive information, integrating it with the quarry areas. This includes data on marble quality, fracturing and geotechnical behavior, processes, and operational activities. The Ǝ!PETRA digital assistant is the most advanced integrated and visual management software available on the market, keeping you continuously informed about all quarry activities. Whether at the quarry or remotely, you can access real-time information on Industry 4.0 machinery, maintenance schedules, geotechnical sensors, administrative deadlines, production, personnel, and much more, any time, every day. Maximize efficiency and savings with Ǝ!PETRA—everything you need in a single, user-friendly application, designed specifically for quarry professionals by an experienced quarryman. By purchasing Ǝ!PETRA, you can gradually add new modules to the system. Its core principles include intuitiveness, minimal learning time, and continuous support. Additionally, we have ensured that our app complies with GDPR regulations, allowing users to withdraw consent easily.
Screenshots
Verdict
The clearest difference is in-app purchases: Epetra at none against Openchat's 8. Epetra also leads on ads (none vs shown). Openchat's advantage is update cadence (every 3 weeks vs every 2 months). On price, device support and iOS requirement 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. Openchat sells 8 in-app purchases, starting at $6.99 per 7 days. Epetra asks for nothing beyond the download.
Openchat ships an update every 3 weeks, Epetra every 2 months. The most recent releases landed on October 14, 2026 and October 1, 2026 respectively.
| Parameter | Openchat | Epetra |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (4.4K ratings) — better | — |
| Positive reviews | 81.1% of reviews | — |
| Number of ratings | 4.4K — better | — |
| Update frequency | Every 3 weeks — better | Every 2 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 111 MB | 28 MB |
| Age rating | 12+ | 4+ |
| Developer | JARVISY LTD | ORLANDO PANDOLFI |
Bugs and requests
Openchat
Reported bugs
2 issues- Incompatibility with older devices
- Charging for a free trial
Requested features
3 requests- Option to create documents
- More free messages or reduced reset time
- Dark mode option
Epetra
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Openchat
- 3-day free trial3 Days trial$6.997 Days
- 3-day free trial3 Days trial$7.997 Days
- AI Chat Premium Monthly1 Month trial$19.991 Month
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- 3-day free trial3 Days trial$19.991 Month
- AI Chat Premium Monthly1 Month trial$29.991 Month
- Yearly Access$39.991 Year
- Yearly Access$49.991 Year
- Yearly Access$89.991 Year
Epetra
No in-app purchases









