Folder (hidden data) vs AmpGuide
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
Folder (hidden data)
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Keep your files, photos, passwords, notes, contacts, and to-do lists private ā encrypted on your iPhone, accessible only through the app. ⢠All your information is encrypted with AES ⢠The only way to access your content is through the app ⢠Lock individual sections with biometrics or a PIN ⢠App Lock secures the entire app when it goes to the background ⢠No internet connection needed ⢠All data stays on your iPhone ā no servers, no cloud ⢠Private contacts ā store secret contacts encrypted on your iPhone ⢠Private to-do lists for tasks only you can see
AmpGuide
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AmpGuide is an electrical field reference and calculator suite for electricians, apprentices, inspectors, engineers, solar installers, EV installers, and serious DIY customers. It brings common jobsite calculations into one offline workbench so you can check numbers, compare options, and keep notes without digging through separate utilities. Version 2.5 includes 27 calculators plus Inspection Brief for saved Jobs. The app reviews the calculations in a job pack, assigns a readiness score, flags failing results, calls out missing core checks, and suggests the next actions to document before review. Core tools include: - Wire size calculator with ampacity and voltage-drop checks. - Voltage drop for copper or aluminum, single-phase or three-phase. - Ampacity tables with ambient and conductor-count derating. - Breaker sizing for continuous and non-continuous loads. - Conduit fill, box fill, Ohm's Law, and three-phase helpers. - Standard and optional method service-load calculations. - Transformer kVA sizing and NEC 450.3(B)-style OCPD guidance. - Wire pull tension and jam-ratio checks. - Grounding electrode and equipment grounding conductor sizing. - Motor FLC, lighting demand, range demand, dryer demand, and fault-current tools. - Solar PV string, EV charger, parallel conductor, burial depth, and bid-estimate workspaces. - Conduit bender and wire color, resistor, thermocouple, and plug-pinout references. AmpGuide is designed for quick field decisions and reviewable planning. It is an informational reference and calculator, not a substitute for the official NEC, engineering judgment, jobsite conditions, permits, inspections, or authority-having-jurisdiction requirements. Always verify final work against currently adopted code and local requirements. Saved calculations and job notes stay on the device. AmpGuide does not request protected device permissions.
Screenshots
Verdict
The clearest difference is price: Folder (hidden data) at Free against AmpGuide's $0.99. AmpGuide's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Folder (hidden data) is free to download; AmpGuide costs $0.99 up front. Folder (hidden data) sells 1 one-off in-app purchase. AmpGuide asks for nothing beyond the download.
Folder (hidden data) ships an update every 4 weeks, AmpGuide weekly. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.
| Parameter | Folder (hidden data) | AmpGuide |
|---|---|---|
| Price | Free ā better | $0.99 |
| Update frequency | Every 4 weeks | Weekly ā better |
| Ads | Yes | No ā better |
| In-app purchases | Yes | No ā better |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 26.0 | 17.0 ā better |
| Further details ā not scored | ||
| Size | 9 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Ezequiel Barreto | Robert Corbin |
In-app purchases
Folder (hidden data)
- Remove Ads$0.99
AmpGuide
No in-app purchases
Questions
Is Folder (hidden data) free?
Is AmpGuide free?
Do Folder (hidden data) or AmpGuide have ads?
Which is updated more often, Folder (hidden data) or AmpGuide?
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