Comparison

Folder Lock Pro vs Voltage Drop & Wire Size

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

Head to head
About

Folder Lock Pro

Securely protect your private files, photos, videos, and documents with password protection. Wirelessly transfer files to and from your PC or Mac, and manage music without iTunes. Features include a secure browser, wallet card storage, and advanced security options like decoy passwords and login attempt logging.

Highlights
  • Password-protect files, photos, and videos
  • Wireless file transfer to PC/Mac
  • Secure browser with no trace
  • Store wallet cards securely
  • Decoy password and login attempt logging
  • Support for various document, picture, video, audio, and archive formats
Features
Read full description

Folder Lock lets you password-protect your personal files, photos, videos, documents, contacts, wallet cards, notes and audio recordings in your iPhone. Folder Lock is your perfect WiFi manager, as you can transfer files from your iPhone to PC, or vice versa, wireless via Folder Lock. Its WiFi Music Manager feature allows you the options of audio import, music import, song import and mp3 import without using iTunes. FEATURES: • Lock Folder • Protect private photos • Hide sensitive videos and pictures • Password-protect secret audios • Lock down important documents • Write secure notes • Record voice recordings and memos secretly • Import Saved Contacts • Lock Videos • Lock Photos • Create secret Contact Groups • Send multiple SMS to secret Contacts Groups • Secure Browser (leaves no traces and privacy enabled) • Audio Import • Save Protected Wallet Cards - Credit Cards - Bank Accounts - ID / Social Security - Driver’s License details - Business Cards - Business Info - Health and Hygiene - Passport details - General Purpose Cards • Import files from - Photo Gallery - Music - Camera - PC / MAC - Secure Browser • View, Run and Play - Media Player for videos - Audio Player for music and audios - Picture Viewer for Photos - Document Editor for Documents • Settings and Options - Hacker Deterrents - Decoy Password (Fake Password) - Brute force attack prevention - Take images of unauthorized login attempts - Logs unauthorized login attempts - Deterrents on multiple invalid login attempts - Backup Password in case of forgotten password FORMATS SUPPORTED: • Documents: doc, docx, ppt, pptx, xls, xlsx, pdf, epub, txt • Pictures: png, jpg, bmp, gif • Videos: aac, m4v, mp4, mov, wmv, avi, aiff, wav, aax, aax+ • Audios: aac, he-aac, mp3, aax, aiff, wav, wma • Archives: rar, tar, gzip, 7z, gz, log, torrent, pps Folder Lock provides security for your data, mainly when you share your mobile phone with someone and prefer to keep personal files, pictures, videos and documents password-protected.

About

Voltage Drop & Wire Size

Calculate voltage drop and size wires for electrical projects. Evaluate existing conductors or find the optimal size for your needs. Supports various electrical systems and international standards.

Highlights
  • Voltage drop calculation
  • Wire sizing
  • NEC/AWG and Metric support
  • Ampacity calculations
  • Save and reopen calculations
  • Adjustable temperature units
Features
Read full description

Voltage Drop & Wire Size brings voltage-drop calculation and wire sizing into one practical workflow. Check a run with the conductor you already have in mind, see the result immediately, and move to a better size when the drop is outside your target. • Check voltage drop with the conductor you want to evaluate • Find the smallest available size that meets your selected target • Send the recommended size back into the calculation The app supports NEC / AWG and BS-style / Metric workflows across DC, single-phase AC, split-phase 120/240, and three-phase AC systems. You can enter load in amps or watts, choose copper or aluminum conductors, and work from preset drop limits or a custom target depending on the job you are checking. • Review voltage drop in volts and percent • See load voltage, running current, power loss, and a next-size-up comparison • Adjust power factor and installation method For NEC-based work, the app also supports ampacity-aware calculations with continuous load, ambient temperature, conductor grouping, and conductor temperature rating inputs. Saved calculations can be reopened later with notes, and ambient temperature can be shown in Celsius or Fahrenheit. • Review adjusted ampacity in NEC mode • Reopen saved calculations and keep notes with the job • Switch ambient temperature display between Celsius and Fahrenheit This app is intended as calculation guidance. Verify final conductor selection, ampacity, and installation requirements against the applicable standard and manufacturer data before use.

Screenshots

Folder Lock Pro4 screens
Voltage Drop & Wire Size4 screens

Verdict

The call

The clearest difference is price: Voltage Drop & Wire Size at Free against Folder Lock Pro's $3.99. Voltage Drop & Wire Size also leads on rating (5.0 vs 3.8) and ads (none vs shown). Folder Lock Pro's advantage is in-app purchases (none vs 1) and ratings volume (24 vs 1).

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

Voltage Drop & Wire Size is free to download; Folder Lock Pro costs $3.99 up front. Voltage Drop & Wire Size sells 1 one-off in-app purchase. Folder Lock Pro asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Voltage Drop & Wire Size holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: Folder Lock Pro has 24 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Folder Lock Pro ships an update every 6 months, Voltage Drop & Wire Size every 2 weeks. The most recent releases landed on October 16, 2026 and October 14, 2026 respectively.

Scorecard9 real differences · 1 level
Folder Lock Pro versus Voltage Drop & Wire Size: the parameters behind the verdict, then further details
ParameterFolder Lock ProVoltage Drop & Wire Size
Price$3.99Free — better
Rating3.8 (24 ratings)5.0 (1 ratings) — better
Positive reviews31.8% of reviews—
Number of ratings24 — better1
Update frequencyEvery 6 monthsEvery 2 weeks — better
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationPaidFree — better
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS9.0 — better18.0
Further details — not scored
Size46 MB2 MB
Age rating4+4+
DeveloperNewSoftwares.netAlona Nesterenko

Customer experience

Folder Lock Pro

All ratings24 ratings
Positive70.8%
Neutral4.2%
Negative25.0%
Written reviews22 reviews
Positive31.8%
Neutral9.1%
Negative59.1%

Voltage Drop & Wire Size

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Folder Lock Pro

No in-app purchases

1 purchases

Voltage Drop & Wire Size

One-time1
  • Lifetime Access$1.99

Questions

Is Folder Lock Pro free?
Folder Lock Pro costs $3.99, with no in-app purchases.
Is Voltage Drop & Wire Size free?
Voltage Drop & Wire Size is free to download, with in-app purchases available.
Which has better reviews, Folder Lock Pro or Voltage Drop & Wire Size?
Voltage Drop & Wire Size is rated higher. Folder Lock Pro averages 3.8 out of 5 from 24 ratings, while Voltage Drop & Wire Size averages 5.0 from 1 ratings.
Do Folder Lock Pro or Voltage Drop & Wire Size have ads?
Folder Lock Pro shows ads; Voltage Drop & Wire Size does not.
Which is updated more often, Folder Lock Pro or Voltage Drop & Wire Size?
Folder Lock Pro ships an update every 6 months, and Voltage Drop & Wire Size every 2 weeks. Most recently, Folder Lock Pro was updated on October 16, 2026 and Voltage Drop & Wire Size on October 14, 2026.

Other comparisons