Stellarium Mobile vs PseudoPlay
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Stellarium Mobile
Explore the night sky with a real-time planetarium. Identify stars, planets, constellations, and satellites by simply pointing your phone. Offers detailed astronomical data and cultural constellation interpretations.
- Real-time sky simulation
- Identify stars, planets, satellites
- Constellation shapes and illustrations
- Deep sky object catalog
- Night mode for eye comfort
- Telescope control (Plus)
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Stellarium Mobile is a planetarium app that shows exactly what you see when you look up at the stars. Identify stars, constellations, planets, comets, satellites (such as the ISS), and other deep sky objects in real time in the sky above you in just a few seconds, just by pointing the phone at the sky! This astronomy application has an easy to use and minimalist user interface, that makes it one of the best astronomical applications for adults and children who want to explore the night sky. Stellarium Mobile features: • View an accurate night sky simulation of stars and planets for any date, time and location. • Dive in a collection of many stars, nebulas, galaxies, star clusters and other deep sky objects. • Zoom on realistic Milky Way and Deep Sky Objects images. • Discover how people living in other regions of the planet see the stars by selecting the shapes and illustrations of the constellations for many sky cultures. • Track artificial satellites, including the International Space Station. • Simulate landscape and atmosphere with realistic sunrise, sunset and atmosphere refraction. • Discover 3D rendering of the major solar system planets and their satellites. • Observe the sky in night mode (red) to preserve your eyes adaptation to darkness. Stellarium Mobile contains in-app purchases allowing to upgrade to Stellarium Plus. With this upgrade, the app will display objects as faint as magnitude 22 (versus magnitude 8 in the base version) and enable advanced observing features. Stellarium Plus features (unlocked with in-app purchase): • Reach the limit of knowledge by diving in a massive collection of stars, nebulas, galaxies, star clusters and other deep sky objects: - All known stars: Gaia DR2 catalog of over 1.69 billion stars - All known planets, natural satellites and comets, and many other minor solar system objects (10k asteroids) - Most known deep sky objects: a combined catalog of over 2 million nebulas and galaxies • Zoom almost without limits on high resolution images of deep sky objects or planetary surfaces. • Observe in the field, even without internet connection, with a "reduced" set of data: 2 million stars, 2 million Deep Sky Objects, 10k asteroids. • Control your telescope through WIFI: drive any GOTO telescope compatible with NexStar, SynScan or LX200 protocols. • Prepare your observing sessions using the advanced observation tools, to predict a celestial object observability and transit times. Stellarium Mobile is made by the original creator of Stellarium, the well known open source planetarium and one of the best astronomy applications on Desktop PC. Your can unlock the full features using either a one time payment or a subscription. See In-App Purchase section for the subscription price available in your country. Payment will be charged to your iTunes account. Your subscription will automatically renew unless cancelled 24 hours prior to the end of the current period. Auto renewal may be turned off at any time by going to your account settings after purchases. Terms of service: https://stellarium-labs.com/stellarium-mobile-plus/stellarium-mobile-terms-of-use Privacy policy: https://www.stellarium-labs.com/privacy-policy-for-stellarium-mobile
PseudoPlay
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PseudoPlay es una herramienta diseñada para que aprender lógica de programación sea una experiencia más clara, visual y accesible. En lugar de obligarte a imaginar lo que ocurre dentro de un algoritmo, la app te permite ver cada paso de forma real y comprensible. Puedes escribir pseudocódigo libremente o construirlo con bloques interactivos, y en ambos casos observar cómo cambian las variables, cómo fluye cada condición y cómo avanza la ejecución línea por línea. La aplicación está pensada para acompañarte desde el primer momento. Si prefieres comenzar con ejemplos, encontrarás algoritmos predeterminados organizados por niveles que puedes explorar, modificar y ejecutar para entender cómo funcionan. Si prefieres crear tu propio pseudocódigo, el editor te permitirá escribir de forma intuitiva, con sugerencias que te ayudan a evitar errores comunes sin interrumpir tu proceso creativo. Al ejecutar un algoritmo, PseudoPlay muestra de manera detallada cada acción que ocurre en el programa. Cada cambio se registra en una prueba de escritorio visual que te permite analizar con claridad el comportamiento completo del algoritmo. Esta vista es especialmente útil para quienes están aprendiendo, ya que elimina la confusión típica de las pruebas manuales y permite comprender realmente el porqué de cada resultado. PseudoPlay funciona completamente de manera local y no requiere conexión a internet. Está diseñada para que cualquier estudiante, principiante o persona interesada en mejorar su lógica de programación pueda practicar en cualquier momento. Su objetivo es ayudarte a entender la programación desde la claridad, la interacción y la práctica, haciendo que cada algoritmo cobre sentido ante tus ojos y fortaleciendo tu comprensión desde la base.
Screenshots
Verdict
The clearest difference is price: Stellarium Mobile at Free against PseudoPlay's $1.99. Stellarium Mobile also leads on chart position (#63 vs unranked). PseudoPlay's advantage is in-app purchases (none vs 2) and update cadence (every 2 days vs every 5 weeks). On ads and device support 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
Stellarium Mobile is free to download; PseudoPlay costs $1.99 up front. Stellarium Mobile sells 2 in-app purchases, starting at $1.99 per month. PseudoPlay asks for nothing beyond the download.
Stellarium Mobile ships an update every 5 weeks, PseudoPlay every 2 days. The most recent releases landed on November 10, 2026 and November 5, 2026 respectively.
| Parameter | Stellarium Mobile | PseudoPlay |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 4.8 (40K ratings) — better | — |
| Positive reviews | 84.4% of reviews | — |
| Number of ratings | 40K — better | — |
| Update frequency | Every 5 weeks | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Best chart rank | #63 — better | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17 | 13.0 — better |
| Further details — not scored | ||
| Size | 456 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | Noctua Software Ltd | Daniel Nuno |
Bugs and requests
Stellarium Mobile
Reported bugs
3 issues- Compass not working properly
- Favorites list disappearing
- Inconsistent performance on different devices
Requested features
5 requests- Notifications for astronomical events
- More customization options
- Integration with camera for AR overlay
- Better support for telescopes and mounts
- Improved search and navigation
PseudoPlay
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Stellarium Mobile
- Stellarium PLUS7 Days trial$1.991 Month
- Stellarium PLUS$18.99
PseudoPlay
No in-app purchases
Questions
Is Stellarium Mobile free?
Is PseudoPlay free?
Do Stellarium Mobile or PseudoPlay have ads?
Which is updated more often, Stellarium Mobile or PseudoPlay?
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