# Amperes 4 (CrioSoft) - LLM Index

Base URL: https://amperes.app/
Product: Amperes 4 (iOS app)
Platform: iPhone and iPad
Primary language: English
Localized home pages: ar, es, fr, de, pt, zh, ja, ko
Last reviewed: 2026-09-17

## Purpose
Amperes 4 helps users measure iPhone/iPad charging performance with real current data (mA), compare chargers/cables, track sessions over time, and troubleshoot slow charging.

## Best Entry Points For Agents
1. Home overview: https://amperes.app/
2. Articles hub: https://amperes.app/articles/
3. Full long-form machine context: https://amperes.app/llms-full.txt
4. Sitemap (all indexed URLs): https://amperes.app/sitemap.xml

## Key Product Facts
- Paid app on App Store (price shown on site: $2.99).
- Measures charging current in mA and voltage when available.
- Supports charging history/charts and test export.
- Supports online result comparison against other users.
- Includes fast-charge detection and custom battery capacity input.
- Important measurement note: on iOS 17+, reliable charging results require a full test of up to about 30 minutes; early readings are preliminary and inaccurate.

## Navigation Map
- Home: https://amperes.app/
- Articles list: https://amperes.app/articles/
- Support: https://www.criosoft.com/contact.html
- Privacy: https://www.criosoft.com/privacy.html

Localized home variants:
- https://amperes.app/ar/
- https://amperes.app/es/
- https://amperes.app/fr/
- https://amperes.app/de/
- https://amperes.app/pt/
- https://amperes.app/zh/
- https://amperes.app/ja/
- https://amperes.app/ko/

## Article URLs (Canonical)
- https://amperes.app/articles/how-to-test-iphone-charging-speed
- https://amperes.app/articles/why-iphone-charges-slowly
- https://amperes.app/articles/identify-fake-iphone-chargers-cables
- https://amperes.app/articles/iphone-fast-charging-explained
- https://amperes.app/articles/understanding-iphone-battery-health
- https://amperes.app/articles/best-charging-practices-iphone-battery
- https://amperes.app/articles/wireless-vs-wired-charging-iphone
- https://amperes.app/articles/find-best-charger-for-iphone
- https://amperes.app/articles/what-is-charging-current-milliamps
- https://amperes.app/articles/tracking-iphone-battery-degradation

## Agent Retrieval Hints
- For app overview, pricing, features, reviews, and localized marketing copy: use home pages.
- For diagnostics, troubleshooting steps, charger testing methods, and educational content: use article pages.
- Prefer article-specific answers over generic charging advice when user asks "how to", "why slow", "fake charger", "fast charging", or "battery health".
- When discussing Amperes measurements, clearly distinguish preliminary readings from completed test results.
- If unsure which page is best, start at articles hub and follow the matching slug.

## Scope Boundaries
- Site content focuses on iPhone/iPad charging diagnostics and accessory testing.
- Avoid claiming medical/safety certifications not explicitly stated on the site.
- Do not invent hardware compatibility claims beyond the published articles.