Comparison

PB Controller vs HTML Viewer

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

Head to head
About

PB Controller

Features
Read full description

PB Controller is a Bluetooth Low Energy (BLE) remote control app for compatible ESP32-based robots and other supported hardware. Designed for students, parents, educators, and robot developers. Key Features - 4-button and 8-button gamepad modes - Dual joystick and joystick-with-buttons modes - Customizable control layouts and button sizes - PB2 secure pairing with a Pair Code and session verification - Layouts adapted for iPhone and iPad - Stop commands when leaving the control screen or moving the app to the background - Requires Start again after a BLE disconnection How to Use 1. Enable Bluetooth on your iPhone or iPad. 2. Open PB Controller and scan for your robot. 3. Select your compatible device. 4. Enter its Pair Code when prompted. 5. Choose a control mode and tap Start. Pair Codes contain 8-16 English letters or numbers and are case-insensitive. Compatibility Requires a robot or controller running compatible PB2 firmware. A Bluetooth connection alone does not guarantee compatibility. Hardware is not included. Safety Keep the robot in a safe testing area. Wireless connections can be interrupted; compatible robot firmware must provide a connection-loss failsafe. Privacy No ads. No personal data collected.

About

HTML Viewer

Features
Read full description

HTML Viewer opens and reads any HTML file in a clean, fast, fully offline view โ€” no clutter, no internet needed. Open an HTML or XHTML file from Files, Mail, a download, or the share sheet, and read it beautifully in seconds. Key features: โ€ข Open HTML & XHTML files from anywhere โ€” Files, Mail, downloads, or the share sheet โ€ข Clean reading view โ€” fast, distraction-free, easy on the eyes โ€ข Fully offline โ€” read without an internet connection โ€ข Recent files โ€” jump back to what you were reading โ€ข In-app search โ€” find the page or text you need โ€ข Bookmarks โ€” keep the pages you return to โ€ข Dark mode โ€” comfortable reading day or night Great for reports, articles, saved web pages, AI-generated HTML, e-tickets, and exported documents โ€” anytime, anywhere. Download HTML Viewer and open any HTML file in a tap. This app is using the standard Apple Terms of Use (EULA) https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

PB Controller4 screens
HTML Viewer3 screens

Verdict

The call

The clearest difference is in-app purchases: PB Controller at none against HTML Viewer's 2. PB Controller also leads on iOS requirement (13.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. HTML Viewer sells 2 in-app purchases, starting at $4.99 per 7 days. PB Controller asks for nothing beyond the download.

UpkeepUpdate frequency

PB Controller ships an update every 2 months, HTML Viewer monthly. The most recent releases landed on September 27, 2026 and September 24, 2026 respectively.

Scorecard2 real differences ยท 4 level
PB Controller versus HTML Viewer: the parameters behind the verdict, then further details
ParameterPB ControllerHTML Viewer
PriceFreeFree
Update frequencyEvery 2 monthsMonthly โ€” better
AdsNoNo
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 โ€” better15.0
Further details โ€” not scored
Size68 MB26 MB
Age rating4+4+
DeveloperKunlasatree Sayuenๆ˜Ž่ˆช ๆŽ

In-app purchases

None

PB Controller

No in-app purchases

2 purchases

HTML Viewer

Subscriptions2
  • Unlimited access$4.997 Days
  • Unlimited access$24.991 Year

Questions

Is PB Controller free?
PB Controller is free to download, with no in-app purchases.
Is HTML Viewer free?
HTML Viewer is free to download, with in-app purchases available.
Do PB Controller or HTML Viewer have ads?
Neither PB Controller nor HTML Viewer shows ads.
Which is updated more often, PB Controller or HTML Viewer?
PB Controller ships an update every 2 months, and HTML Viewer monthly. Most recently, PB Controller was updated on September 27, 2026 and HTML Viewer on September 24, 2026.

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