# Signal Ark: SETI Explorer — Explore Cosmic Radio Signals > Educational app for exploring cosmic radio signals and radio astronomy. (iPhone/iPad app by Jean Marc Moro.) - Source: https://appshunter.io/ios/app/signal-ark-seti-explorer/id6784939271 (this page in markdown: same URL + `.md`) - Developer: [Jean Marc Moro](https://appshunter.io/developer/1896481117) - Category: Education, Reference - Price: Free with in-app purchases - Rating: 5.00/5 from 1 App Store ratings - Age rating: 4+ - Requires: iOS 17.0 · 44 MB - Languages: American English - Released: 2026-07-05 - Data updated: 2026-08-16 - Monetization: freemium - User reviews in markdown: https://appshunter.io/ios/app/signal-ark-seti-explorer/id6784939271/reviews.md ## What is Signal Ark? Signal Ark puts cosmic radio signal exploration in your hands. WHAT IS SIGNAL ARK? Signal Ark is a SETI-inspired educational app for exploring radio astronomy concepts, signal packages, waterfall spectrograms, anomaly scores, drift rates, RFI probability, SNR values, and the scientific method behind cosmic listening. SIGNAL VAULT Browse curated signal packages inspired by radio astronomy workflows. Each package includes information such as target name, frequency band, observation date, source context, and a waterfall-style visualization. SETI ACADEMY Learn the foundations of cosmic signal analysis through structured lessons. Discover how radio telescopes work, why humans search the cosmos, what makes a candidate signal interesting, how interference is identified, and why every anomaly requires validation. COSMIC JOURNAL Save signals that catch your attention, write notes, and build your own exploration archive. SOUND LIBRARY Explore radio signal sonifications and learn how scientific data can be represented through sound. SCIENTIFIC INTEGRITY Signal Ark never labels a signal as extraterrestrial. Interesting does not mean alien. Every candidate requires independent verification and scientific validation. PREMIUM ACCESS Some content and features require an optional auto-renewable Monthly Access subscription. Payment is charged through your Apple Account. The subscription renews automatically unless canceled through your Apple Account subscription settings. PRIVACY FIRST No advertising or behavioral tracking. Signal Ark uses anonymous app identifiers and does not require your name, location, or personal profile. Privacy Policy: https://signal-ark.space/privacy.html Terms of Use (EULA): https://signal-ark.space/terms.html ## Key features - Cosmic radio signal exploration - Signal package analysis - SETI-inspired lessons - Waterfall spectrograms - Cosmic journal for notes - Radio signal sonification ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Monthly Access | $6.99 | per month | ## Frequently asked questions about Signal Ark ### What is Signal Ark's learning methodology? Signal Ark uses structured lessons within the SETI Academy to teach the foundations of cosmic signal analysis. It covers how radio telescopes work, the purpose of cosmic searches, identifying candidate signals, and the importance of validation. ### How does Signal Ark track user progress? Users can save signals that interest them in their Cosmic Journal, write notes, and build a personal archive of their explorations. This allows for self-directed progress tracking and review of findings. ### Does Signal Ark offer certifications? The provided information does not mention any formal certifications offered by Signal Ark. The focus is on educational exploration and personal archiving of discoveries. ### What is the free trial period for Signal Ark's subscription? Signal Ark offers a 3-day free trial for its Monthly Access subscription. This allows users to explore premium content and features before committing to a paid plan. ### How can I cancel my Signal Ark subscription? Subscriptions for Signal Ark can be canceled through your Apple Account subscription settings. The subscription will automatically renew unless canceled prior to the renewal date. ### What are the different tiers of Signal Ark's subscription? The app offers 'Monthly Access' as an optional auto-renewable subscription. The description does not detail other subscription tiers or differences between them. ### Does Signal Ark have ads? No, Signal Ark is ad-free and does not feature any advertising or behavioral tracking. The developers prioritize user privacy. ### Is Signal Ark safe for younger users? Signal Ark is rated for ages 4+ and is designed with privacy in mind, avoiding advertising and tracking. Its educational content focuses on scientific principles. ## Version history (last 3 releases) ### 1.2 — 2026-08-10 What’s New in Version 1.2 • Introducing a redesigned Signal Ark Premium subscription page • New 3-day free trial for eligible subscribers • Clearer monthly pricing and renewal information • Improved access to Restore Purchases, Terms of Use, and Privacy Policy • General interface and stability improvements ### 1.1 — 2026-07-09 Notes for App Review — Version 1.1 (Build 1) This update refines the onboarding flow and the Premium (subscription) screen. Summary of changes: Onboarding copy simplified — the welcome screen and the "In Signal Ark" explanation screen now show shorter, less repetitive text. No functional changes to these screens. Onboarding flow shortened — users now go directly from the "In Signal Ark" screen to the Premium subscription screen, instead of passing through an intermediate "Wow! Signal" case-study screen first. This case-study content has not been removed — it is now accessible from a link ("The Wow! Signal — read the case study") on the Premium screen itself, opened as an in-app sheet with its own close button. Premium screen layout — the subscription screen now shows only: app description, the monthly subscription offer with price, a link to the Wow Signal case study, Restore Purchases, and the required Terms of Use (EULA) / Privacy Policy links. All legal links remain visible and tappable without needing to subscribe first. App Store screenshots updated — the first 3 screenshots (both iPhone and iPad sets) were updated to match the current onboarding flow (Landing, In Signal Ark, Premium). Since the Wow! Signal case study is no longer a standalone onboarding screen, it is not shown as a separate screenshot — it's reachable from within the Premium screenshot via the case-study link. No changes were made to the subscription product, pricing, entitlement logic, or purchase/restore flow (StoreKit / Apple In-App Purchase only — no external checkout). The paywall remains dismissible via the Close / Back buttons at any time before purchase. ### 1.0 — 2026-07-06 No release notes. ## Apps similar to Signal Ark | App | Rating | Price | Category | | --- | --- | --- | --- | | [Animal Sound Identifier AI ID](https://appshunter.io/ios/app/animal-sound-identifier-ai-id/id6748877268) | 2.9 (15) | Free | Education | | [Artemis Mission Tracker](https://appshunter.io/ios/app/artemis-mission-tracker/id6761183798) | 4.2 (5) | Free | Education | | [NHA Parent Portal](https://appshunter.io/ios/app/nha-parent-portal/id1454846342) | 4.9 (2,904) | Free | Education | | [Data Structure Display](https://appshunter.io/ios/app/data-structure-display/id1455489695) | 4.5 (665) | Free | Education | | [Animal Identifier - Nature ID](https://appshunter.io/ios/app/animal-identifier-nature-id/id6736855429) | 4.6 (116) | Free | Education | | [Data Science Academy](https://appshunter.io/ios/app/data-science-academy/id1629602011) | — | Free | Education | ## More apps by Jean Marc Moro - [NEXUS Protocol](https://appshunter.io/ios/app/nexus-protocol/id6767498503) - [Brutal Spanish](https://appshunter.io/ios/app/brutal-spanish/id6790445194) All apps by Jean Marc Moro: https://appshunter.io/developer/1896481117 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-16.*