SmartLoop vs Fault Finder Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SmartLoop
Control your home lighting wirelessly with this intuitive app. Set up and manage your lighting ecosystem easily with a suite of controls and sensors for all your needs.
- Wireless lighting control
- Intuitive app interface
- Lighting ecosystem management
- Suite of controls and sensors
- Quick setup
Read full descriptionHide full description
SmartLoop by Keystone is a simple wireless lighting control system that brings the convenience of lighting control to everyone. It has a suite of controls and sensors for all needs, and the intuitive SmartLoop app allows you to set up and manage your lighting ecosystem quickly and easily
Fault Finder Pro
A comprehensive troubleshooting reference for industrial electricians and maintenance technicians. Quickly diagnose common electrical problems with step-by-step guides and a searchable database of fault codes. Includes essential electrical reference tables and calculators.
- Step-by-step fault diagnosis
- Searchable fault code database
- NEC wire sizing table
- Voltage drop calculator
- Ohm's Law calculator
- Motor nameplate decoder
Read full descriptionHide full description
Fault Finder Pro is a fast, no-nonsense troubleshooting reference built by an industrial electrician for industrial electricians and maintenance technicians. Stop wasting time digging through manuals on the job site. Everything you need is right here — offline, organized, and ready when you are. STEP-BY-STEP FAULT DIAGNOSIS Walk through guided fault trees for the most common industrial electrical problems. Answer yes/no questions and get a recommended action fast. - Motor won't start - Breaker keeps tripping - VFD faults - 3-phase power issues - Transformer faults - Generator and transfer switch faults - Servo and motion control faults - Panel and distribution faults - Allen-Bradley PLC faults — MicroLogix, CompactLogix, and ControlLogix (communication, I/O, and program faults) FAULT CODE LOOKUP Searchable database of fault codes with cause and fix for every code. - Allen-Bradley PowerFlex VFDs - Fanuc CNC alarms - Fanuc Robot alarms (SRVO, SYST, MOTN, MEMO, COLL, and more) - Siemens SINAMICS drives - Yaskawa drives ELECTRICAL REFERENCE - NEC wire sizing table — AWG 14 through 500kcmil - 3-phase voltage drop calculator - Conduit fill reference - 3-phase formulas TOOLS - Ohm's Law calculator — enter any 2 values, solve for the rest - Motor nameplate decoder — enter HP, voltage, and FLA to calculate overload relay, breaker size, fuse size,
Screenshots
Verdict
The clearest difference is price: SmartLoop at Free against Fault Finder Pro's $7.99. SmartLoop also leads on iOS requirement (12.0 vs 15.1). Fault Finder Pro's advantage is rating (5.0 vs 4.8) and update cadence (every 3 weeks vs every 2 months). On review sentiment, ratings volume, ads and in-app purchases 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
SmartLoop is free to download; Fault Finder Pro costs $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Fault Finder Pro holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 4 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
SmartLoop ships an update every 2 months, Fault Finder Pro every 3 weeks. The most recent releases landed on November 3, 2026 and November 6, 2026 respectively.
| Parameter | SmartLoop | Fault Finder Pro |
|---|---|---|
| Price | Free — better | $7.99 |
| Rating | 4.8 (4 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 4 — better | 2 |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 36 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | Keystone Technologies, LLC | Richard Johnson |
Customer experience
SmartLoop
Fault Finder Pro
In-app purchases
SmartLoop
No in-app purchases
Fault Finder Pro
No in-app purchases
