HeyCharge Pre vs Html Preview
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HeyCharge Pre
This app helps estimate installation costs for your property by gathering details about your building, parking, and electrical setup. Receive a personalized, free offer for installation, potentially including a wallbox, after completing the assessment.
- Property assessment for installation costs
- Building and electrical infrastructure details
- Parking garage information
- Personalized installation cost offer
- Optional wallbox inclusion
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The HeyCharge Pre-Check App is a mobile app in which you'll answer about your property's individual circumstances such as building, parking garage, and electrical infrastructure situations for a better installation cost estimate. Based on your information, we will share your free and individual offer for an installation after completing the installation check, optionally including a wallbox.
Html Preview
Quickly view any HTML file on your iPhone or iPad. Share files from any app or browse your device to instantly render web pages, AI reports, or email attachments. Enjoy a private, ad-free experience with a history of your viewed files.
- Share Extension for instant previews
- Zero-delay instant rendering
- History with source app tracking
- Support for multiple encodings
- Dark Mode support
- File picker for local browsing
- Privacy-focused, no ads or analytics
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Open any HTML file on your iPhone in seconds. Html Preview is the simplest way to view HTML files shared from any app. Whether it's a report from ChatGPT, a page saved from Safari, or an attachment from WeChat — just tap Share and preview it instantly. KEY FEATURES • Share Extension — Open HTML files directly from any app using the iOS Share Sheet • Instant Rendering — Pre-warmed WebView engine loads content with zero delay • History — Recent files with source app tracking (knows if it came from WeChat, ChatGPT, Mail, etc.) • Multiple Encodings — Supports UTF-8, Windows-1252, and ISO Latin-1 • Dark Mode — Beautiful warm UI that adapts to your system appearance • File Picker — Browse and open HTML files from the Files app • Privacy First — No ads, no analytics, no data collection. Everything stays on your device. PERFECT FOR • Viewing HTML reports generated by AI assistants (ChatGPT, Claude, Gemini) • Previewing web pages shared via messaging apps (WeChat, Telegram, WhatsApp) • Opening HTML email attachments • Checking HTML files from cloud storage (iCloud, Google Drive, Dropbox) • Developers previewing HTML mockups on mobile Html Preview supports .html, .htm, and .xhtml files.
Screenshots
Verdict
The clearest difference is price: HeyCharge Pre at Free against Html Preview's $2.99. HeyCharge Pre also leads on rating (5.0 vs 4.7) and iOS requirement (15.6 vs 17.0). Html Preview's advantage is update cadence (every 6 days vs every 6 weeks) and ratings volume (11 vs 1). On ads, in-app purchases 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
HeyCharge Pre is free to download; Html Preview costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
HeyCharge Pre holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Html Preview has 11 ratings behind it against 1, so its average is the more settled of the two.
HeyCharge Pre ships an update every 6 weeks, Html Preview every 6 days. The most recent releases landed on October 6, 2026 and October 7, 2026 respectively.
| Parameter | HeyCharge Pre | Html Preview |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | 5.0 (1 ratings) — better | 4.7 (11 ratings) |
| Positive reviews | — | 87.5% of reviews |
| Number of ratings | 1 | 11 — better |
| Update frequency | Every 6 weeks | Every 6 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 52 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | HeyCharge GmbH | CyberGame Limited |
Customer experience
HeyCharge Pre
Html Preview
In-app purchases
HeyCharge Pre
No in-app purchases
Html Preview
No in-app purchases
