Comparison

S7 Link vs SIMATIC WinCC OA UI

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

S7 Link

Features
Read full description

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.

About

SIMATIC WinCC OA UI

Monitor and control your SIMATIC WinCC OA plant remotely from your smartphone or tablet. Access the same powerful functionality as the desktop interface, ensuring secure and reliable real-time operation from anywhere.

Highlights
  • Remote plant monitoring
  • Real-time control
  • Multiple system connections
  • Secure data transmission
  • Intuitive mobile interface
Read full description

Stay in control of your SIMATIC WinCC OA plant - anytime, anywhere - with the WinCC OA UI App on your smartphone or tablet. Whether you're in the office, on the move, or on-site, you can monitor and intervene in real time. The app provides the same powerful functionality as the familiar desktop user interface - secure, reliable, and optimized for mobile use. Key Benefits at a Glance: - Flexible Remote Access: Monitor and control your plant from anywhere. - Multiple System Connections: Easily switch between different WinCC OA systems. - Secure Data Transmission: Connect via HTTP or HTTPS with optional SSL encryption. - Intuitive Operation: A familiar interface designed for mobile devices. Note: By downloading this app, you agree to the associated license agreements.

Screenshots

S7 Link4 screens
SIMATIC WinCC OA UI1 screens

Verdict

The call

The clearest difference is price: SIMATIC WinCC OA UI at Free against S7 Link's $14.99. SIMATIC WinCC OA UI also leads on in-app purchases (none vs 3) and iOS requirement (15.0 vs 26.0). On update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

SIMATIC WinCC OA UI is free to download; S7 Link costs $14.99 up front. S7 Link sells 3 one-off in-app purchases. SIMATIC WinCC OA UI asks for nothing beyond the download.

UpkeepUpdate frequency

S7 Link ships an update every 4 months, SIMATIC WinCC OA UI every 2 months. The most recent releases landed on November 10, 2026 and November 6, 2026 respectively.

Scorecard3 real differences · 7 level
S7 Link versus SIMATIC WinCC OA UI: the parameters behind the verdict, then further details
ParameterS7 LinkSIMATIC WinCC OA UI
Price$14.99Free — better
Rating—5.0 (2 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 4 monthsEvery 2 months — better
AdsNoNo
In-app purchasesYesNo — better
Monetization—Free
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS26.015.0 — better
Further details — not scored
Size10 MB70 MB
Age rating4+4+
DeveloperCarlo TrottiSiemens AG

In-app purchases

3 purchases

S7 Link

One-time3
  • Alarms$2.99
  • Charts$2.99
  • OPC Client$4.99
None

SIMATIC WinCC OA UI

No in-app purchases

Questions

Is S7 Link free?
S7 Link costs $14.99, and also offers in-app purchases.
Is SIMATIC WinCC OA UI free?
SIMATIC WinCC OA UI is free to download, with no in-app purchases.
Do S7 Link or SIMATIC WinCC OA UI have ads?
Neither S7 Link nor SIMATIC WinCC OA UI shows ads.
Which is updated more often, S7 Link or SIMATIC WinCC OA UI?
S7 Link ships an update every 4 months, and SIMATIC WinCC OA UI every 2 months. Most recently, S7 Link was updated on November 10, 2026 and SIMATIC WinCC OA UI on November 6, 2026.

Other comparisons