CableCalc BS7671 vs SAGE® by Armstrong
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CableCalc BS7671
This application performs comprehensive electrical cable calculations compliant with BS7671:2018(2024) standards. It checks for voltage drop, disconnection time, fault current, and overload data, generating detailed PDF reports. Supports single and three-phase calculations for various circuit types and includes extensive cable databases.
- BS7671:2018(2024) compliant calculations
- Voltage drop, disconnection time, fault current checks
- Single and three-phase calculations
- Radial, ring, and sub main circuits
- Detailed PDF report generation
- Extensive cable and protective device database
- Correction factor application
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CableCalc BS7671 is a cable evaluation program fully compliant with BS7671:2018(2024) Requirements for Electrical Installations IEE Wiring Regulations 18th Edition based on IEC/CENELEC Standards. Following the success of previous releases of CableCalc BS7671 over the past 20 years, CableCalc BS7671 has been re-designed for the iPad to provide a intuitive user interface with all the comprehensive features of the Windows software. CableCalc BS7671 will calculate and check for voltage drop, disconnection time, fault current, earth fault data, overload and short circuit data and will produce a detailed print-out for each calculation in PDF format which can be printed to an AirPort compatible printer or emailed. CableCalc BS7671 will perform both single and three-phase calculations for radial, ring and sub main circuits. CableCalc includes a full database of copper cables and generic protective devices and allows you to complete all information relevant to the calculation including any applicable correction factors for temperature, grouping etc. Energy let through values can be entered and calculations can be saved to load back in later. Cable types include: 70°C PVC Armoured & Non Armoured multicore & singles, Twin & earth, 6491x & 6181y Singles 90°C LSF Armoured singles & multicore, 6491b & 6181 Singles, Twin & earth, Flat 3 core & earth 90°C XLPE Armoured & Non Armoured singles & Multicore, 6491b & 6181xy singles FP100, FP200, FP200 Flex, FP400 and Fireforce PH30 Fire rated MICC PVC Sheath/Bare, Heavy & Light Duty CY, SY, YY 70°C PVC Flexible cable, 105°C Tri-Rated singles 60 & 90°C Rubber insulated flexible cable CableCalc is available in the english language only and all cable sizes are metric (mm). BS7671 is the standard for wiring regulations in the United Kingdom.
SAGE® by Armstrong
Manage steam traps and digital domestic hot water systems with this native Apple application. Perform surveys offline, connect directly to compatible devices via Bluetooth, and sync data to the cloud when a network is available.
- Steam trap surveys
- Digital hot water system management
- Offline data collection
- Bluetooth (BLE) device communication
- Real-time monitoring
- Alarm configuration
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Survey your steam traps and manage your digital domestic hot water system with efficiency and accuracy using the free, native Apple application included with SAGE®. SAGE® Mobile enables you to perform steam trap surveys with your iPhone, iPad or iTouch device—even when no Internet connection is available. It includes our Squares Condition Screen, and an intuitive user interface that provides the quickest way to manually update the condition of your traps. SAGE® Mobile saves you time and increases accuracy as it quickly gathers your data and stores it locally, automatically pushing it to SAGE® as soon as you have access to a network connection. SAGE® Mobile allows for direct Bluetooth (BLE) communication with The Brain® DRV25 with no programming or other equipment required, just your smartphone device. SAGE® Mobile also provides a direct connection to SAGE® if a paid subscriber. The SAGE® Mobile App allows users to BLE connect to the product to monitor real time temperatures, adjust setpoints, configure alarm settings and perform thermal disinfection. Users also get error message notification and history. SAGE® subscribers have all the direct BLE connectivity features plus the ability to remotely change settings via their secure SAGE® network connection.
Screenshots
Verdict
The clearest difference is price: SAGE® by Armstrong at Free against CableCalc BS7671's $149.99. SAGE® by Armstrong also leads on update cadence (every 2 months vs every 23 months). CableCalc BS7671's advantage is iOS requirement (9.0 vs 16.6). On ads, in-app purchases 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
SAGE® by Armstrong is free to download; CableCalc BS7671 costs $149.99 up front. Neither carries in-app purchases, so what you see is what you pay.
CableCalc BS7671 ships an update every 23 months, SAGE® by Armstrong every 2 months. Both last shipped on November 6, 2026.
| Parameter | CableCalc BS7671 | SAGE® by Armstrong |
|---|---|---|
| Price | $149.99 | Free — better |
| Rating | — | 4.4 (22 ratings) — better |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | — | 22 — better |
| Update frequency | Every 23 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPad | iPhone, iPad — better |
| Requires iOS | 9.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 2 MB | 55 MB |
| Age rating | 4+ | 4+ |
| Developer | Castline Systems | Armstrong International, Inc. |
Customer experience
CableCalc BS7671
SAGE® by Armstrong
In-app purchases
CableCalc BS7671
No in-app purchases
SAGE® by Armstrong
No in-app purchases
Questions
Is CableCalc BS7671 free?
Is SAGE® by Armstrong free?
Do CableCalc BS7671 or SAGE® by Armstrong have ads?
Which is updated more often, CableCalc BS7671 or SAGE® by Armstrong?
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