# Robot72 - ISS SSTV Decoder — Ham Radio & Satellite Images > Decode and transmit slow-scan television (SSTV) images for ham radio and satellite communication. (iPhone/iPad app by 晨阳 段.) - Source: https://appshunter.io/ios/app/robot72-iss-sstv-decoder/id6764195382 (this page in markdown: same URL + `.md`) - Developer: [晨阳 段](https://appshunter.io/developer/1791560858) - Category: Photo & Video, Utilities - Price: Free with in-app purchases - Rating: 4.86/5 from 14 App Store ratings · 1 written reviews indexed - Age rating: 4+ - Requires: iOS 18.2 · 38 MB - Languages: Korean, German (Germany), Russian, European Spanish, American English, Italian, Indonesian, Japanese, Chinese (Simplified, China), Chinese (Traditional, Taiwan) and 4 more - Released: 2026-05-05 - Data updated: 2026-11-09 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/robot72-iss-sstv-decoder/id6764195382/reviews.md ## What is Robot72? Robot72 turns pictures into slow-scan television (SSTV) audio, and SSTV audio back into pictures. Decode images from ham radio, from the International Space Station or from a friend's phone, and send your own photos to any SSTV receiver. RECEIVE Tap Listen and hold your iPhone near the radio's speaker. Robot72 reads the VIS header, picks the mode and draws the picture line by line. To decode a WAV recording, tap File. Reception keeps going when the screen is locked, with progress in a Live Activity. SEND Pick a photo, choose the mode your contact uses, add a caption if you like, and play it through the speaker or a cable into your radio. Pro also exports the audio as a WAV file. ISS PASSES Enter your location or use the current one, and Robot72 lists ISS passes for the next 48 hours with peak elevation and direction. Turn on reminders to get a notification a few minutes before each pass. Predictions are calculated on your iPhone from CelesTrak orbital data; your location is not uploaded. 31 MODES Robot 8/12/24/36 BW, Robot 12/24/36/72 Color, PD 50/90/120/160/180/240/290, Martin 1–4, Scottie 1/2/3/4/DX, Wraase SC2 30/60/120/180, Pasokon P3/P5/P7. HISTORY AND FIXES Every picture you receive or send is kept in History with its mode and time. Fix a slanted or shifted image, then save or share it. History has no limit. FREE AND PRO Any mode can be decoded and viewed for free. Robot 36 and Robot 72 can be saved, shared and sent for free, with a small watermark. To save or send one picture in another mode, watch a short video, up to 3 times a day. Robot72 Pro is a one-time purchase that unlocks every mode, removes the watermark and adds WAV export. No subscription. PRIVACY Audio and pictures are processed on your iPhone. Robot72 sends anonymous usage events that are not linked to you, and does not track you across apps. Rewarded videos are non-personalized; there are no banner or pop-up ads. ## Key features - Decode SSTV audio to images - Send photos via SSTV - View ISS pass predictions - Support for 31 SSTV modes - Image correction and history - Optional Pro version with WAV export ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Robot72 Pro | $4.99 | one-time | | Pro — Special Offer | $2.99 | one-time | ## Is Robot72 safe? Not enough ratings yet to assess Robot72. ## Is Robot72 legit? Robot72 - ISS SSTV Decoder appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Robot72 is 65 out of 100 points across 7 verification signals from App Store and developer data. ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/robot72-iss-sstv-decoder/id6764195382/reviews.md ### 5/5 — G *2026-06-20* Jgdh ## Frequently asked questions about Robot72 ### What is Robot72 used for? Robot72 is used to decode slow-scan television (SSTV) audio into images and to send your own photos as SSTV signals. It's particularly useful for receiving images from ham radio transmissions and the International Space Station (ISS). ### How does Robot72 decode SSTV images? You can hold your iPhone near a radio's speaker to decode live SSTV audio, or load a WAV recording from your files. The app automatically detects the VIS header, selects the correct mode, and reconstructs the image line by line. ### Can I send my own photos with Robot72? Yes, you can select a photo, choose the desired SSTV mode, add a caption, and play it through your device's speaker or a cable connected to your radio. The Pro version also allows exporting the audio as a WAV file. ### Does Robot72 have ads? Robot72 contains advertisements. You can watch short, non-personalized rewarded videos up to three times a day to unlock saving, sharing, or sending pictures in modes beyond Robot 36 and Robot 72 in the free version. ### What are the differences between the free and Pro versions of Robot72? The free version allows decoding and viewing all modes, and saving/sending Robot 36 and Robot 72 with a watermark. Robot72 Pro is a one-time purchase that unlocks all modes, removes the watermark, and adds WAV audio export. ### How accurate are the ISS pass predictions? ISS pass predictions are calculated on your iPhone using CelesTrak orbital data, providing peak elevation and direction for the next 48 hours. Your location data is not uploaded, ensuring privacy. ### What is the update frequency for Robot72? Robot72 was last updated on 2026-11-07 with version 2026.11.3. This indicates a recent update, suggesting ongoing development and support for the application. ### Is Robot72 suitable for children? Robot72 has an age rating of 4+, making it suitable for younger users. The app processes audio and pictures on the device and does not track users across apps. ## Version history (last 5 releases) ### 2026.11.3 — 2026-11-07 • ISS passes: see upcoming passes for your location and get a reminder before each one. • Background reception: keep listening with the screen locked, with progress in a Live Activity. • History no longer has a limit for free users. • Fix slanted or shifted images, and export several images at once. • Clearer screens: a shorter setup on Receive, help on Transmit, and the most common modes at the top of the mode list. • More reliable decoding in noisy rooms and with mains hum. ### 2026.10.25 — 2026-10-25 Improved Pro upgrade offers and price updates when an offer expires. ### 2026.10.14 — 2026-10-16 Ready for iPhone Duo: the layout now adapts when the display is unfolded and when the app is used side by side with another app. Plus stability improvements. ### 2026.9.26 — 2026-09-29 • More reliable reception: listening continues while you browse History, and back-to-back images are saved automatically. • Clearer feedback on weak input — the level meter now separates volume from signal quality, plus a new reception help page and built-in demo. • History never deletes your images: when free history is full, new receptions wait in "Needs organizing". • Transmit: choose fit or fill-and-crop framing and see the estimated transmission time. • More dependable Pro purchase: the store retries loading and shows a clear message if it can't connect. ### 2026.8.4 — 2026-08-04 Improved onboarding with audio-synchronized SSTV signals and clearer Robot 36/72 demo images. 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User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-11-09.*