Comparison

FELPS Link vs IO

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

Head to head
About

FELPS Link

Manage your utility account on the go with this app. Access account details, view bills and balances, make payments, and schedule reminders. Stay connected and informed with push notifications.

Highlights
  • Account management
  • Bill viewing
  • Payment processing
  • Payment location finder
  • Alert and reminder scheduling
  • Push notifications
Features
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Our Mobile App is designed to give you fast, secure account access so you can easily manage your account details, view your bill and your account balance, make payments and find payment locations, schedule alerts and reminders, receive push notifications and stay connected via facebook. Nearly everything you can do from our "Customer Portal" can now be handled instantly whether you're at home, at work, or on the go.

About

IO

Features
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Forget paper checklists. Check I/Os directly on the machine – where sensors and actuators are located. IO-INSPECTOR is an independent third-party tool for commissioning and functional testing in industrial automation environments. With your iPad or iPhone you can observe, document and - if approved, technically permissible and safety-compliant - switch/control signals on site. Less shouting in the workshop, less manual checking and more clarity right where the work takes place. WHY IO-INSPECTOR? • Project and variable import (for TIA Portal® projects): Import variable lists from common export formats (e.g. .xlsx or .csv). IO-INSPECTOR adopts the structure, data types and comments from the file provided - manual re-entry is not necessary. • HMI View Smart Connector: Quickly connect to your system and conveniently access information relevant to commissioning. The Smart Connector is intended to simplify connection and access to the required displays/views in practice - without having to imply an official manufacturer affiliation. • Fast system connection: Detect and connect devices in the local network quickly and clearly. • Live status and targeted control (OPC UA): Connect to compatible controllers via OPC UA and check signals in real time. • Observe: Track changes immediately. OPC is also accessible via the WebSocket protocol. • Control: Set outputs or markers specifically (Force/Modify), provided this is activated in the environment and meets the safety requirements. • Diagnostics: Identify problems more quickly, such as cabling or logic problems. • Digital documentation (PDF): Check off test steps digitally, add notes (e.g. “Sensor defective”, “Adjustment required”) and export a PDF report with your company logo and timestamp. • Filter and search: Filter by status (“Open”, “Done”) or search directly by symbol name. • Mark changes (round-trip support): Mark typos or name adjustments in the app so that you can later apply them in your engineering project in a controlled manner. • Share and collaborate on projects: Share projects so colleagues can continue with the same project status - including testing status and documentation progress (depending on the sharing/export method chosen). TECHNICAL NOTES/REQUIREMENTS • Compatibility: Developed for environments with SIMATIC® S7-1200 (FW 4.0+) and SIMATIC® S7-1500. • OPC UA: OPC UA must be activated on the CPU. Basic access may not require an additional license depending on your configuration; Actual requirements depend on device, firmware and project configuration. • Signals: Supports digital and analog signals (depending on project/export data and target system). • Network/Offline: Use in the machine's local WLAN; Project-related features can also be available without the Internet (depending on the scope of functions). PRICES • Download IO-INSPECTOR for free to create projects and use network scanning. Upgrade options are available for extended functions (e.g. project import, HMI write access (power tags), PDF export, OPC interface, HMI Smart Connector). • Download IO-INSPECTOR and simplify commissioning. Legal notice/trademark: IO-INSPECTOR is an independent third-party software. SIMATIC®, TIA Portal®, S7® as well as S7-1200 and S7-1500 are trademarks of Siemens AG. This app has no business relationship with Siemens AG and is not developed, supported or distributed by Siemens. All product and company names are used solely to describe compatibility and belong to their respective owners.

Screenshots

FELPS Link4 screens
IO4 screens

Verdict

The call

The clearest difference is in-app purchases: FELPS Link at none against IO's 1. FELPS Link also leads on iOS requirement (12.0 vs 17.6). IO's advantage is update cadence (every 2 weeks vs every 19 months). On price, 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

Both are free to download. IO sells 1 one-off in-app purchase. FELPS Link asks for nothing beyond the download.

UpkeepUpdate frequency

FELPS Link ships an update every 19 months, IO every 2 weeks. The most recent releases landed on October 11, 2026 and October 24, 2026 respectively.

Scorecard3 real differences · 6 level
FELPS Link versus IO: the parameters behind the verdict, then further details
ParameterFELPS LinkIO
PriceFreeFree
Rating4.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 19 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better17.6
Further details — not scored
Size174 MB15 MB
Age rating4+4+
DeveloperFloresville Electric Light and Power SystemCJ Solution UG (haftungsbeschraenkt)

In-app purchases

None

FELPS Link

No in-app purchases

1 purchases

IO

One-time1
  • Pro Version Lifetime$17.99

Questions

Is FELPS Link free?
FELPS Link is free to download, with no in-app purchases.
Is IO free?
IO is free to download, with in-app purchases available.
Do FELPS Link or IO have ads?
Neither FELPS Link nor IO shows ads.
Which is updated more often, FELPS Link or IO?
FELPS Link ships an update every 19 months, and IO every 2 weeks. Most recently, FELPS Link was updated on October 11, 2026 and IO on October 24, 2026.

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