EcoQuest vs Sacred Knowledge Vault
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
EcoQuest
Read full descriptionHide full description
EcoQuest is easy to find, making carbon footprints easy to see and find. EcoQuest is an environmental education app dedicated to stimulating low-carbon awareness and guiding low-carbon actions. The unique gamification experience allows you to understand carbon-neutral knowledge more clearly. Combined with AR augmented reality, you can easily get started with low-carbon actions around you. Let us understand why and how to be environmentally friendly and work together towards a carbon-neutral world. [Carbon Reduction Family - Achieving a Zero Carbon Family] In fact, everyone can participate in carbon reduction. If you want to achieve a zero-carbon family, you can start with small things around you. In "Carbon Reduction Family," you need to be aware of various high-carbon threats. Learn how to reduce your carbon footprint and do what you can in real life to start a zero-carbon home! [Energizing the Future - Powering the Earth] Electric energy is an essential aspect of our lives. Have you ever wondered where the electricity that lights up your home comes from? In "Energizing the Future," you need to "create" some wind and let the wind turbines rotate, so you can intuitively understand how future energy is generated. [Garbage Sorting - Please Help the Garbage Go Hom] Don't underestimate garbage sorting; it is an important measure for us to reduce carbon emissions every day and an environmental protection practice that everyone can easily do. In "Garbage Sorting," turn the device in your hand to let the garbage fall into the correct area. Let us help the garbage return to its "home." [Climate Change - Mindful of Changes] Having learned a lot about environmental protection, it is crucial to review what you have learned. "Climate Change" uses interesting quizzes to gauge your level of environmental protection knowledge and help you address any blind spots. Come and answer the questions and save the polar bears on the ice floe! [Green Exploration - Embracing Nature and Discovering Beauty] New activities are waiting for you to participate. Come and explore the beauty of nature together! [Badge Achievements - Record Every Bit of Your Progress] It is not just the "exhibition hall" of the knowledge cards you have collected but also the "display window" of your achievement level. Quickly open various features, collect knowledge cards from various aspects, help you achieve personal growth, and record your progress on the path to carbon neutrality!
Sacred Knowledge Vault
This AI tool offers a unique role-playing system with two knowledge base modes for private or public inquiries. It prioritizes user privacy by storing all conversation data locally and securely. Explore diverse topics with pre-built templates and manage your knowledge with built-in tools.
- Role-playing system with unique identities
- Dual knowledge base modes (public & private)
- Local data storage for maximum privacy
- Pre-built prompt templates (Wisdom Sparks)
- Conversation archiving and favorites
- Encrypted API key storage
Read full descriptionHide full description
An AI knowledge tool with an exclusive role-playing system featuring two separate knowledge base modes. All conversation data is stored locally to fully protect your privacy. Six Exclusive Roles: You must pick an identity on your first launch: Angel, Demon, Sage, Knight, Fox and Hermit. Each role comes with unique salutations, conversation tones and placeholder texts for the input box. You may switch roles anytime in Settings. The AI opens every reply with role-specific greetings for an immersive Q&A experience. Dual Knowledge Base Modes — Balance of Convenience & Privacy: 1. Sacred Library — Official Built-in Public Knowledge Base It includes ten complete categories: full-stack development, general learning, quotes & proverbs, design thinking, workplace communication, history & literature, finance & psychology, space science and more. Pre-built prompt templates named Wisdom Sparks are available. You can read daily offline quotes without API configuration — ready to use right after installation. 2. Personal Codex — Custom Private Model Knowledge Base (Max Privacy Protection) Create your private knowledge vault by entering your LLM API address, secret key and model name. All conversations are only sent to the third-party interface you configure. The app will not collect, upload or retain your Q&A content on its own. Full chat history is saved locally in the on-device FMDB database with no cloud uploads. You retain full ownership of all your data. Full Suite of Knowledge Management Tools: - Sacred Archives: Conversations are auto-saved locally, paginated and grouped by knowledge base; only accessible on your device. - Sacred Favorites: Long-press any dialogue to save it locally for later review. - Wisdom Sparks: Built-in prompt templates to start knowledge inquiries with one tap. Privacy & Security Guarantees: 1. Local Data Storage: All chats, favorites and history remain in your local database with no automatic cloud uploads. 2. Isolated Private Mode: Messages in your private vault are only relayed to your self-provided model endpoint. We never access your API keys or conversation data. 3. Encrypted API Key Storage: Your custom model keys are securely stored in Keychain with no plaintext caching. 4. Full Data Control: Clear all local chat cache and device data in one tap via Settings. Target Users: Programmers, designers, educators, copywriters, students, casual knowledge seekers, and users who run private LLMs and prioritize data privacy. We keep updating built-in knowledge bases and role interaction experiences continuously.
Screenshots
Verdict
EcoQuest and Sacred Knowledge Vault are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
EcoQuest ships an update weekly, Sacred Knowledge Vault every 8 days. The most recent releases landed on October 17, 2026 and October 16, 2026 respectively.
| Parameter | EcoQuest | Sacred Knowledge Vault |
|---|---|---|
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| Update frequency | Weekly — better | Every 8 days |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15 |
| Further details — not scored | ||
| Size | 335 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | yujun ma | 平 何 |
In-app purchases
EcoQuest
No in-app purchases
Sacred Knowledge Vault
No in-app purchases
Questions
Is EcoQuest free?
Is Sacred Knowledge Vault free?
Do EcoQuest or Sacred Knowledge Vault have ads?
Which is updated more often, EcoQuest or Sacred Knowledge Vault?
Other comparisons















