Southwire® Voltage Drop Calc vs SimplyAuth
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Southwire® Voltage Drop Calc
Calculate the appropriate wire size for electrical circuits. This tool helps determine wire size based on voltage drop and current carrying capacity, ensuring compliance with NEC ampacity limits.
- Determine wire size for voltage drop
- Calculate voltage drop for conductor runs
- Limit wire size by voltage drop
- Limit wire size by NEC ampacity
- Supports AWG and KCMIL sizes
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Southwire's voltage drop calculator will help you determine the proper wire size for an electrical circuit based on the voltage drop and current carrying capacity of an electrical circuit. Determines wire size to meet specific voltage drop limits or calculates voltage drop for a specific conductor run. When sizing conductors, calculations limits wire size to voltage drop and NEC ampacity. Southwire's Voltage Drop Calculator is designed for applications using AWG and KCMIL sizes only.
SimplyAuth
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Some things should never live in your text history. Passwords. Social Security numbers. Card numbers. Wi-Fi codes. The recovery phrase for your account. We all end up texting this stuff — and then it sits in a thread forever, on two phones, backed up to two clouds, one screenshot away from the wrong hands. SimplyAuth is built for exactly that moment. Send it encrypted. Watch it vanish. Open a Session with someone, share the sensitive thing, and it's protected end-to-end — encrypted on your device, decrypted only on theirs. Our servers never see the contents. When the Session ends, the message is gone — no history, no backup, no trail. Know who's really on the other end. Before you share a secret, you should know who you're sharing it with. SimplyAuth connections are verified — and when you're on a phone call, both sides can confirm each other with a phrase that rotates every 60 seconds. If the phrases match, it's really them. If they don't, hang up. It's the same idea as a one-time login code, but for people. Safety built in — and always free. Set a check-in, and if you don't confirm you're okay, your trusted contacts are alerted. Set a duress signal that quietly calls for help without tipping off anyone watching. These safety features are never behind a paywall. Privacy by design. - End-to-end encryption — we can't read your messages, even if we wanted to. - Ephemeral by default — sensitive content isn't meant to be kept, so it isn't. - Verified connections — you choose who you can exchange secrets with. - No ads. No data sales. Ever. Simple pricing. One subscription unlocks everything: $0.99/month or $7.99/year, with a 30-day free trial. Safety features stay free for everyone. Stop putting your most sensitive information somewhere it was never safe. Share it the way it should have been shared all along. simplyauth.app
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Verdict
The clearest difference is in-app purchases: Southwire® Voltage Drop Calc at none against SimplyAuth's 2. On price, 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
Both are free to download. SimplyAuth sells 2 in-app purchases, starting at $0.99 per month. Southwire® Voltage Drop Calc asks for nothing beyond the download.
Southwire® Voltage Drop Calc ships an update every 2 months, SimplyAuth every 3 months. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.
| Parameter | Southwire® Voltage Drop Calc | SimplyAuth |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (1.5K ratings) — better | — |
| Positive reviews | 49.1% of reviews | — |
| Number of ratings | 1.5K — better | — |
| Update frequency | Every 2 months — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 10 MB | 57 MB |
| Age rating | 4+ | 4+ |
| Developer | Southwire Company | SimplyAuth LLC |
Bugs and requests
Southwire® Voltage Drop Calc
Reported bugs
24 issues- Useless!
- Won't work
- How to use
- Confused
- Bad app
Show 19 moreShow fewer
- Bad
- Not applicable for Residential
- Electrician
- Terrible
- Not working
- What??
- Terrible
- Don't work
- Terrible
- Choice Between AWG and Metric wire Gauge
- Updated app not so simple
- The last version was better
- App
- Terrible
- Voltage drop calculator
- IOS 8
- One flaw
- Worst app ever
- Average
Requested features
2 requests- Motor starting Voltage drop calculation
- Metric wire size options
SimplyAuth
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Southwire® Voltage Drop Calc
No in-app purchases
SimplyAuth
- Personal$0.991 Month
- Personal$7.991 Year
Questions
Is Southwire® Voltage Drop Calc free?
Is SimplyAuth free?
Do Southwire® Voltage Drop Calc or SimplyAuth have ads?
Which is updated more often, Southwire® Voltage Drop Calc or SimplyAuth?
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