Comparison

REExplorer vs HTML Viewer

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

Head to head
About

REExplorer

Read full description

Turn your phone into a sound wellness studio. RE Explorer uses your phone microphone, sensors and GPS to offer 9 practical tools to listen to, visualize and better understand your environment. No accounts. No ads. No tracking. Your data never leaves your phone. 9 TOOLS Live Radar Harmony radar with a real compass. It turns ambient sound into a visual map of calm and saves your readings. RE Creator Hub Frequency generator with sine, square, triangle and sawtooth waves. Includes 8 Solfeggio presets from 174 to 852 Hz and 6 binaural bands from Delta to Gamma, including the Schumann resonance at 7.83 Hz. Sweep and modulation included. AirScanner Live multi sensor panel with magnetic field, accelerometer, gyroscope, pressure and proximity data, plus a built in real compass. WaveScope Real time oscilloscope with 4 display styles. Record and revisit the sound pulse of any moment. Spectrum 64 band FFT spectrum analyzer with 3 modes. Bars, wave and mirror. See the frequencies your ear cannot easily separate. Analyzer 4 analysis modes. Waveform, spectrum, waterfall and stereo field. Change speed and pitch, and mark key moments. Studio Generative art from sound. 17 visual styles, 11 based on your recordings and 6 reactive to the live microphone. Export in 2K. Dark Map Street, satellite or terrain map to save your favorite calm spots, with notes and a built in mini radar. Session Center Your session lab. Search, organize and play back m4a, wav, mp3, ogg, aac and flac files. PRIVACY Everything is processed on your phone. We collect no data. There are no ads and no tracking. Your wellness stays yours. LANGUAGES Spanish, English, German, Arabic, Japanese and Korean. RE Explorer. Listen to what your environment has to say.

About

HTML Viewer

This app allows you to view HTML files directly on your iPhone and iPad, offline and without tracking. It supports full JavaScript and CSS rendering, making it ideal for developers, students, and educators.

Highlights
  • Offline HTML rendering
  • Full JavaScript and CSS support
  • Import via Files app or Share Sheet
  • Dark Mode support
  • Pinch-to-zoom functionality
  • View source code with syntax highlighting (Pro)
Features
Read full description

Sitecase is your viewer for local HTML files on iPhone and iPad — local, private and usable offline, with no tracking. Import your HTML files via the Files app or the Share sheet and view them with full CSS and JavaScript support. You can also open complete folders with multiple files — whole projects or multi-page websites with images, CSS and JavaScript, not just single files (Pro). Perfect for web developers, students, teachers or anyone who wants to view HTML content on the go. FEATURES: • Full HTML, CSS and JavaScript rendering • Open whole folders: complete projects made of multiple files — multi-page websites with images, CSS and JavaScript (Pro) • Dark Mode support • Import files via the Share sheet or the Files app • Shortcuts & Siri: open saved files directly — even as an icon on your Home Screen • Pinch to zoom • Turn network access on or off anytime • View source code with syntax highlighting (Pro) • Text search within files (Pro) • Manage favorites (Pro) • Adjustable zoom level (Pro) • Turn JavaScript support on or off (Pro) PRIVACY: All your files stay local on your device. The app itself connects to no server and uses no analytics or tracking services. If an opened page intentionally loads online content, you can turn off network access anytime.

Screenshots

REExplorer4 screens
HTML Viewer4 screens

Verdict

The call

The clearest difference is price: HTML Viewer at Free against REExplorer's $0.99. HTML Viewer also leads on update cadence (every 5 days vs every 3 months). REExplorer's advantage is in-app purchases (none vs 1). On ads, device support and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

HTML Viewer is free to download; REExplorer costs $0.99 up front. HTML Viewer sells 1 one-off in-app purchase. REExplorer asks for nothing beyond the download.

UpkeepUpdate frequency

REExplorer ships an update every 3 months, HTML Viewer every 5 days. The most recent releases landed on August 22, 2026 and September 22, 2026 respectively.

Scorecard3 real differences · 7 level
REExplorer versus HTML Viewer: the parameters behind the verdict, then further details
ParameterREExplorerHTML Viewer
Price$0.99Free — better
Rating—5.0 (13 ratings) — better
Positive reviews—90.0% of reviews
Number of ratings—13 — better
Update frequencyEvery 3 monthsEvery 5 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Freemium
DevicesiPhoneiPhone, iPad — better
Requires iOS17.2 — better17.6
Further details — not scored
Size5 MB6 MB
Age rating4+4+
DeveloperANDRES MATAS BAENADennis Bortmes

In-app purchases

None

REExplorer

No in-app purchases

1 purchases

HTML Viewer

One-time1
  • Sitecase Pro$3.99

Questions

Is REExplorer free?
REExplorer costs $0.99, with no in-app purchases.
Is HTML Viewer free?
HTML Viewer is free to download, with in-app purchases available.
Do REExplorer or HTML Viewer have ads?
Neither REExplorer nor HTML Viewer shows ads.
Which is updated more often, REExplorer or HTML Viewer?
REExplorer ships an update every 3 months, and HTML Viewer every 5 days. Most recently, REExplorer was updated on August 22, 2026 and HTML Viewer on September 22, 2026.

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