BendPro vs BendMarks
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BendPro
This app assists electricians and conduit workers with rapid bend calculations in the field. It offers various calculators for different bend types, providing detailed marks, spacing, and step-by-step instructions for efficient conduit work.
- Quick calculators for multiple bend types
- Field-ready marks and spacing
- Step-by-step instructions
- Real bender profiles for CLR math
- Reference screen for multipliers and data
- Layout tracking for total degrees and conduit
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Marks on the stick. Bend it once. Pick your bender, type the rise or the stub, and BendPro tells you where to mark, which shoe mark to line up with and which way the hook faces. You see the bend in 3D before you touch the conduit. • 90° stubs, back-to-back 90s, offsets and kicks • 3-point and 4-point saddles • Parallel offsets for a rack, evenly spaced • Rolling offsets and segment bends • A run builder: several bends on one stick, and where to cut • Every mark on a real tape measure, in bend order • Step by step with the bender on screen: slide, line up, bend, roll • Full size in AR, on the floor or a wall • A level to check the angle with your phone • Inches to 1/32″ or metric, works with no signal YOUR BENDER, ITS REAL NUMBERS Hand benders from Klein, Greenlee, Ideal, Milwaukee, Gardner Bender and Southwire, plus Greenlee mechanical, electric and hydraulic machines. Take-up and radius come from the makers' own charts wherever they publish them, and every number says where it's from. Not listed? Bend a Test 90 and BendPro measures yours.
BendMarks
This app calculates conduit bending, voltage drop, and fill capacities for electrical work. It provides detailed formulas and diagrams for each calculation, helping users understand the underlying math. Designed for field use with offline functionality and glove-friendly controls.
- Conduit bending calculations with diagrams
- Voltage drop analysis
- Conduit fill calculations
- Box fill calculations
- Step-by-step formula explanations
- Offline functionality
- Support for multiple NEC code cycles
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The conduit and code calculator that shows its work. Most calculators hand you a number and expect you to trust it. BendMarks gives you the number, the formula behind it, your own values substituted into that formula, and a labeled diagram of the bend. Check the math on the tailgate. Hand the phone to an apprentice and walk them through it. Catch the mistake before you cut. For the electrician who wants to know why the math works, and the apprentice still learning it. WHAT IT DOES Conduit bending: offset, rolling offset, 3-point saddle, 4-point saddle, 90 degree stub-up and kick bends, each with a labeled diagram and exact mark distances. Voltage drop: single-phase and three-phase, copper or aluminum, with a clear pass or fail against the NEC 3% and 5% targets. Conduit fill: NEC Chapter 9 percentages, drawn as a cross section for any mix of wire. Box fill: NEC 314.16(B) for conductors, devices, grounds and clamps. Obstruction planner: give it the real pipe or wide obstruction in front of you and it returns the bend marks. Apprentice drill mode: random bend problems that make you commit to an answer before they reveal the math. Show your work: every result opens into the formula with your numbers in it, explained in plain language, so you learn the math while you use it. Built for the field: oversized tap targets for gloved hands, a fraction-native keypad, and a sunlight mode that thickens every line so the diagrams hold up in direct sun. Recents: your last 20 calculations, one tap away. WHAT IT DOES NOT DO No ads. No subscription. No account to create. No tracking, and no advertising identifier. One payment, and the whole app is yours. Every calculator runs offline, so a dead zone in a basement or a mechanical room changes nothing. Your measurements and results stay on the phone. The app reports crashes and performance problems so the next version breaks less, and that is the only thing it ever sends. Sources: Benfield's Conduit Bending and Fabrication, Ugly's Electrical References, NEC 2023 Chapter 9. Every NEC value is cited to its section. This is a learning and field reference tool, not a substitute for code review or professional judgment. Always verify against your local code and a licensed electrician.
Screenshots
Verdict
The clearest difference is price: BendPro at Free against BendMarks's $14.99. BendMarks's advantage is rating (5.0 vs 4.0) and in-app purchases (none vs 1). On ratings volume, 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
BendPro is free to download; BendMarks costs $14.99 up front. BendPro sells 1 one-off in-app purchase. BendMarks asks for nothing beyond the download.
BendMarks holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 4 and 2 respectively.
BendPro ships an update monthly, BendMarks every 3 weeks. The most recent releases landed on October 31, 2026 and October 25, 2026 respectively.
| Parameter | BendPro | BendMarks |
|---|---|---|
| Price | Free — better | $14.99 |
| Rating | 4.0 (4 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 4 — better | 2 |
| Update frequency | Monthly | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.0 | 18.0 |
| Further details — not scored | ||
| Size | 5 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Sergii Nesterenko | BigBalli Consulting llc |
In-app purchases
BendPro
- Pro Upgrade$12.99
BendMarks
No in-app purchases








