Satvis vs Talk Morse
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Satvis
Visualize satellite orbits and predict upcoming passes. Receive notifications for when satellites will be visible from your location. Access a comprehensive satellite tracking experience.
- Satellite orbit visualization
- Pass prediction
- Upcoming pass notifications
- Wrapper for satvis.space
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Satvis is a free, open-source satellite tracker for iPhone and iPad. It draws more than 16,000 satellites on a 3D globe in real time: Starlink, GPS, weather satellites, the ISS and many more. Set your location and it predicts when each one passes overhead. The sky view shows the sky from where you stand. Point your phone up to see the satellites in that direction. WHAT IT DOES β’ Visualize satellites on a 3D globe in real time, propagated on the device with SGP4 from CelesTrak's element sets β’ Show points, labels, orbits, orbit tracks, ground tracks, sensor cones, 3D models and ground station links per satellite, colored by orbit class (LEO, MEO, GEO, HEO) β’ Switch catalog groups on and off (Starlink, GNSS, weather, Earth observation, crewed stations), or search for a single satellite β’ Select a satellite to see its orbit, its next passes over your locations and its spacecraft details: country, operator, manufacturer, bus, mass and size β’ Track a satellite: the camera flies to it and follows it along its orbit β’ Save your location or any point you pick on the map, then list the upcoming passes over it and get a notification before one starts β’ Find satellites overhead in the ground-level sky view, aimed by dragging or by pointing your phone β’ See which satellites you could spot: the sky view dims those in Earth's shadow, too far away or in a daylit sky β’ Lay the globe over the base map and terrain you choose: satellite imagery, Earth at night or the day's VIIRS imagery β’ Start from the demo views, bookmark your own, and share any view as a link: it opens the same view on satvis.space β’ Open satvis.space links straight in the app β’ Keep using it offline, from the satellite data it last fetched WHERE THE DATA COMES FROM Element sets come from CelesTrak, refreshed several times a day, and are propagated on your device with SGP4. Spacecraft details come from Jonathan McDowell's GCAT. FREE AND OPEN SOURCE No account, no ads, no in-app purchases. Developed in the open at github.com/Flowm/satvis under the MIT license.
Talk Morse
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Morse code encoding, decoding and learning morse application. This application enables you to generate and decode Morse code through both audio and visual signals, with adjustable transmission speeds. Designed for flexibility and experimentation, it supports communication using sound (via speaker and microphone) as well as light (via camera flash and camera input). On the sending side, you can convert any text you type into Morse code and transmit it either as audio signals through your deviceβs speaker or as visual flashes using your camera light. On the receiving side, the app listens for incoming Morse code signals through the microphone or detects light-based signals using the camera. Messages are decoded and displayed in real time, providing immediate feedback. In addition, the app now includes a dedicated learning section where you can practice and improve your Morse code skills. This training page allows you to learn at different speeds (WPM β words per minute), making it suitable for both beginners and more advanced users. 73
Screenshots
Verdict
The clearest difference is update cadence: Talk Morse at every 9 days against Satvis's every 44 months. Talk Morse also leads on iOS requirement (15.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Satvis ships an update every 44 months, Talk Morse every 9 days. The most recent releases landed on October 24, 2026 and October 19, 2026 respectively.
| Parameter | Satvis | Talk Morse |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | β |
| Update frequency | Every 44 months | Every 9 days β better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | β |
| Devices | iPhone, iPad | iPhone, iPad, iPod β better |
| Requires iOS | 26.0 | 15.0 β better |
| Further details β not scored | ||
| Size | 11 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | Florian Mauracher | Cristian Stamatin |
In-app purchases
Satvis
No in-app purchases
Talk Morse
No in-app purchases









