# S7 Link — S7 Link > S7 Link (iPhone/iPad app by Carlo Trotti.) - Source: https://appshunter.io/ios/app/s7-link/id594070835 (this page in markdown: same URL + `.md`) - Developer: [Carlo Trotti](https://appshunter.io/developer/594070838) - Category: Utilities, Productivity - Price: $14.99 with in-app purchases - Age rating: 4+ - Requires: iOS 26.0 · 10 MB - Languages: American English, French (France), German (Germany), Italian, Chinese (Simplified, China), European Spanish - Released: 2013-02-01 - Data updated: 2026-11-10 ## What is S7 Link? A NEW APP, THE FUNCTIONS YOU KNOW • All the functions and tabs of previous versions are kept: pushbutton panel, manual commands, variables, alarms, point tables, PLC links, CPU status, date and time, backup and sharing • Updating keeps your connections, tables, options and purchases; backups made with iS7 can be restored SUPPORTED PLCS CPUs of the S7-300, S7-400, S7-1200 and S7-1500 families and LOGO!, reachable on the network through ISO on TCP (RFC 1006). S7-1200 and S7-1500 need PUT/GET access enabled and DBs without optimized access. IN-APP PURCHASE Alarm management on real PLCs is available as an in-app purchase. Whoever has already bought it keeps it. SAFETY S7 Link can write to PLCs and act on machinery in operation. Use it with care and at your own risk, and do not rely on it for safety functions. In the background, iOS decides when alarms are checked, and it can be hours apart. Requires iOS 26 or later. Siemens, SIMATIC and S7 are trademarks of Siemens AG. S7 Link is an independent product, not affiliated with or endorsed by Siemens. ## Pricing and in-app purchases Base price: $14.99. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Alarms | $2.99 | one-time | | OPC Client | $4.99 | one-time | | Charts | $2.99 | one-time | ## Is S7 Link safe? Not enough ratings yet to assess S7 Link. ## Is S7 Link legit? S7 Link appears to be a legitimate app. The AppsHunter Legitimacy Score for S7 Link is 83 out of 100 points across 7 verification signals from App Store and developer data. ## Version history (last 5 releases) ### 73.0 — 2026-11-09 MAJOR VERSION • New OPC CLIENT plugin: a second driver, OPC UA, beside the S7 one, switched on per PLC. It reads and writes S7-1500 and S7-1200 CPUs with an OPC UA server, also in optimized DBs and without enabling PUT/GET • Both drivers work together on the same PLC and IP: if one stops, the other goes on • OPC UA security: user and password (always encrypted), None, Sign or Sign & Encrypt channel, PLC certificate confirmed by its fingerprint, S7 Link certificate export for TIA Portal • OPC Variables, Alarms and Trend tables: browse the symbols right on the PLC, with type and access read from the server • CPU Status, INFO and Date/Time also over OPC UA • Connection bar with two lights, S7 and OPC, each with its own state • Yellow light before connecting when the PLC address answers to ping, as in iS7 • Clear messages when a driver is off or not connected • Simulated PLC with an OPC UA server and sample tables: try everything without hardware and without buying • Configuration sharing between devices, compatible with iS7 and S7 Link • Thanks to Davide Nardella for Sharp7 on the Info page ### 72.2 — 2026-11-05 NEWS IN THIS VERSION WHAT'S NEW IN 72.2 • New TREND plugin (in-app purchase): up to five variables in one chart, each with its colour and Y range, with CSV export for Excel and PDF • Refresh per PLC: choose which functions to read among commands, manuals, variables, alarms and trends; the Variables page updates by itself • After you leave the app, alarms are still checked for about 30 seconds, with sound, notification and badge • Key selector for pushbutton panels, with Face ID or a PIN at every turn • New symbols for manual commands; copy and delete tables • A notice when a newer version is on the App Store WHAT'S NEW IN 72.0 • New INFO page: order number, firmware, serial number, memory card, mode switch and protection level, communication speeds and diagnostic buffer, as far as the CPU provides them • Live charts of variables, with CSV export • Visual background notifications for configured alarms, which you can turn on in Alarm management • Widgets and Live Activities for connection and alarms • Command protection with Face ID or a confirmation • Multiple reads for faster scans • Built-in simulated PLC to try everything without hardware • 11 backgrounds, with light and dark themes • Languages: English, Italian, German, French and Spanish, and now Simplified Chinese SIMPLIFICATIONS • Clear messages when a connection fails: wrong address, wrong rack or slot, PUT/GET access disabled • Typical rack and slot values ready for each CPU family • Command type chosen from a miniature of each button • Values checked against their format before writing, timers and counters included • Backup with the Files app: iCloud Drive, Dropbox and other services • The same bottom navigation bar on iPhone and iPad • No third-party SDKs and no data collected ### 72.1 — 2026-11-01 WHAT'S NEW • New INFO page: order number, firmware, serial number, memory card, mode switch and protection level, communication speeds and diagnostic buffer, as far as the CPU provides them • Live charts of variables, with CSV export • Visual background notifications for configured alarms, which you can turn on in Alarm management • Widgets and Live Activities for connection and alarms • Command protection with Face ID or a confirmation • Multiple reads for faster scans • Built-in simulated PLC to try everything without hardware • 11 backgrounds, with light and dark themes • Languages: English, Italian, German, French and Spanish, and now Simplified Chinese SIMPLIFICATIONS • Clear messages when a connection fails: wrong address, wrong rack or slot, PUT/GET access disabled • Typical rack and slot values ready for each CPU family • Command type chosen from a miniature of each button • Values checked against their format before writing, timers and counters included • Backup with the Files app: iCloud Drive, Dropbox and other services • The same bottom navigation bar on iPhone and iPad • No third-party SDKs and no data collected ### 72.0 — 2026-10-31 -ENG- WHAT'S NEW • New INFO page: order number, firmware, serial number, memory card, mode switch and protection level, communication speeds and diagnostic buffer, as far as the CPU provides them • Live charts of variables, with CSV export • Visual background notifications for configured alarms, which you can turn on in Alarm management • Widgets and Live Activities for connection and alarms • Command protection with Face ID or a confirmation • Multiple reads for faster scans • Built-in simulated PLC to try everything without hardware • 11 backgrounds, with light and dark themes • Languages: English, Italian, German, French and Spanish, and now Simplified Chinese SIMPLIFICATIONS • Clear messages when a connection fails: wrong address, wrong rack or slot, PUT/GET access disabled • Typical rack and slot values ready for each CPU family • Command type chosen from a miniature of each button • Values checked against their format before writing, timers and counters included • Backup with the Files app: iCloud Drive, Dropbox and other services • The same bottom navigation bar on iPhone and iPad • No third-party SDKs and no data collected -ITA- NOVITÀ • Nuova pagina INFO: codice ordine, firmware, numero di serie, scheda di memoria, selettore e livello di protezione, velocità di comunicazione e buffer di diagnostica, per quanto la CPU li fornisce • Grafici dal vivo delle variabili, con esportazione CSV • Notifiche visive in background per gli allarmi configurati, abilitabili dalla Gestione allarmi • Widget e Live Activity per connessione e allarmi • Protezione dei comandi con Face ID o con una conferma • Letture multiple per scansioni più rapide • PLC simulato integrato per provare tutto senza hardware • 11 sfondi, con tema chiaro e scuro • Lingue: italiano, inglese, tedesco, francese e spagnolo, e ora anche cinese semplificato SEMPLIFICAZIONI • Messaggi chiari quando la connessione non riesce: indirizzo errato, telaio o slot errati, accesso PUT/GET disattivato • Valori tipici di telaio e slot già pronti per ogni famiglia di CPU • Scelta del tipo di comando con la miniatura di ogni pulsante • Scrittura dei valori controllata in base al formato, anche per timer e contatori • Backup con l'app File: iCloud Drive, Dropbox e altri servizi • Stessa barra di navigazione in basso su iPhone e iPad • Nessun SDK di terze parti e nessun dato raccolto ### 71 — 2026-03-30 --- Change log descriptions - ENG --- I'm truly sorry for the delay in updating the application, which is due to several reasons, not least Apple's constant updates that force constant revisions. Fortunately, the introduction of AI has simplified bug fixes and finalising the application for this new version, which is also compatible with the new iOS 26. I'm working on further optimising and stabilising the PLC operation, improving the user experience. I hope to further improve iS7 with the next release. If you find any malfunctions and/or improvements, please do not hesitate to contact me (info@trotti.eu). Thanks to all iS7 users for the support for debug. --- Descrizione aggiornamenti - ITA --- Sono veramente dispiaciuto del ritardo di aggiornamento dell'applicazione, dovuto a diverse cause, non da ultimo i continui aggiornamenti da parte di Apple, che obbligano a continue revisioni. Fortunatamente l'introduzione dell'AI ha semplificato la correzione dei bugs, e la finalizzazione dell'applicazione, a questa nuova versione, compatibile anche con il nuovo iOS 26. Sto cercando di ottimizzare e stabilizzare ulteriormente il funzionamento PLC, migliorando l'esperienza d'uso. Spero nella prossima versione di riuscire a migliorare ulteriormente iS7. Se trovate malfunzionamenti e/o miglioramenti, non esitate a contattarmi (info@trotti.eu). Grazie a tutti gli utenti di iS7 per l’aiuto nel debug. ## Apps similar to S7 Link | App | Rating | Price | Category | | --- | --- | --- | --- | | [Unified-E](https://appshunter.io/ios/app/unified-e/id1084656253) | — | Free | Utilities | | [SIMATIC WinCC OA UI](https://appshunter.io/ios/app/simatic-wincc-oa-ui/id1073943068) | 5.0 (2) | Free | Utilities | | [SatCatcher Dish Installation](https://appshunter.io/ios/app/satcatcher-dish-installation/id1099407456) | 4.6 (18) | $2.99 | Utilities | | [Ruler & Digital Caliper](https://appshunter.io/ios/app/ruler-and-digital-caliper/id6806950163) | — | Free | Utilities | | [Eaton EM Install](https://appshunter.io/ios/app/eaton-em-install/id1530627437) | 4.0 (3) | Free | Utilities | | [SICK Smart Assistant](https://appshunter.io/ios/app/sick-smart-assistant/id1524423177) | — | Free | Utilities | --- *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 2026-11-10.*