Earth 3D vs Sacred Knowledge Vault
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Earth 3D
Explore a highly realistic 3D model of Earth, complete with dynamic clouds, storms, and atmospheric effects. Observe celestial bodies like the Moon and Sun against the backdrop of the Milky Way. This app offers a relaxing way to de-stress and appreciate the beauty of our planet.
- Realistic Earth with relief and clouds
- Dynamic storm and shadow effects
- Moon and Sun observation
- Milky Way background
- Interactive rotation and zoom
- Multiple camera views
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Enjoy our living Earth, with the Moon and the Sun drifting against the backdrop of the Milky Way. A truly relaxing way to slow down and find calm in a stressful moment. A strikingly realistic Earth : - Terrain relief, clouds with relief, shadows and altitude - Night side glowing with city lights, softly diffused through the clouds - Storm cells animating in the clouds on the night side - Sun reflections on the oceans, eclipses and sun masking - Atmospheric scattering around the globe - A detailed Moon with relief, eclipses, and its shadow cast on Earth - All of it set against the Milky Way and the real night sky - A perfect way to reconnect with the quiet beauty of our world. Tailored to your device: the level of detail and visual effects automatically scale to your device — the more powerful it is, the richer and sharper the experience. Controls : - Drag with one finger to rotate around the Earth; pinch with two fingers to zoom. - Switch camera modes with the top-right buttons: free, orbital, or geostationary. - Pause the animation with the top-left button — then breathe in, and breathe out. - Hold the bottom-right button to speed up time. Take care of yourself, your family and friends — and of our Mother Earth !
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
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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
The clearest difference is review sentiment: Sacred Knowledge Vault at 100% against Earth 3D's 33%. Sacred Knowledge Vault also leads on update cadence (every 8 days vs every 13 months). On price, ads, in-app purchases and monetization model 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.
Earth 3D ships an update every 13 months, Sacred Knowledge Vault every 8 days. The most recent releases landed on October 22, 2026 and October 16, 2026 respectively.
| Parameter | Earth 3D | Sacred Knowledge Vault |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (19 ratings) — better | — |
| Positive reviews | 33.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 19 — better | — |
| Update frequency | Every 13 months | Every 8 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15 — better |
| Further details — not scored | ||
| Size | 230 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | SOLILAB | 平 何 |
Customer experience
Earth 3D
Sacred Knowledge Vault
Bugs and requests
Earth 3D
Reported bugs
4 issues- Buttons impossible to use after 8k update
- App doesn't work after iOS 2.0.1 update
- Blurry when zooming in
- Earth won't stop moving
Requested features
4 requests- Add more planets and solar system
- Real-time weather and cloud cover
- Ability to control rotation and zoom
- Accurate sun/moon positioning
Sacred Knowledge Vault
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Earth 3D
No in-app purchases
Sacred Knowledge Vault
No in-app purchases
Questions
Is Earth 3D free?
Is Sacred Knowledge Vault free?
Do Earth 3D or Sacred Knowledge Vault have ads?
Which is updated more often, Earth 3D or Sacred Knowledge Vault?
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