SM NexStudio

Free and open source

Built for Android. Built to stay out of your business.

ToolXStack puts 216 offline tools in your pocket. Panelglass translates manga right inside the speech balloons. Both are free and open source, with no ads, no accounts and no tracking.

See the apps Source on GitHub

Two apps, built the same way

Each one does a single job well, runs on your phone first, and publishes every line of its source.

ToolXStack app icon

ToolXStack

Offline toolbox · Android 13+

216 tools for developers and everyday sums in one fast app. JSON and JWT, hashes, unit and loan calculators, colour tools and more. It has no internet permission at all, so what you paste never leaves your phone.

Tools
216
Categories
10
Network permissions
0
Download APK Privacy policy
  • 57DeveloperJSON, XML, YAML, JWT, hashes, regex
  • 28CalculationScientific, stats, fractions
  • 21Geometry2D and 3D shapes, volume
  • 32Unit ConverterLength, mass, temperature, data
  • 22FinanceEMI, SIP, CAGR, GST, FD
  • 8HealthBMI, BMR, hydration, pace
  • 23Text UtilitiesCounters, case, line tools
  • 10Color ToolsHEX, RGB, HSL, contrast
  • 10RandomizerDice, coin, picker
  • 5Date & TimeAge, duration, time zones
Panelglass app icon

Panelglass

Manga translator · Android 12+ · early development

Read manga, manhwa and manhua in your language. Panelglass erases the original lettering and redraws each balloon in place as you scroll, fully on your phone with Gemma 4 or Google Translate, or with Gemini if you add your own key.

Target languages
15
Lettering fonts
21
Servers of our own
0
Download APK Privacy policy
Panelglass settings: source language Japanese, target English, translation model and themes
どうする？ Japanese, as printed

Privacy, side by side

The short version of both policies. ToolXStack never touches the network. Panelglass is a browser, so it does, and it tells you exactly when.

Question ToolXStack Panelglass
Internet permissionRemoved from the appYes, it’s a browser
Data sent to SM NexStudioNothingNothing
Analytics or crash reportsNoneNone
AdsNoneNone, and it blocks them on sites
Account or sign-inNoneNone
What leaves your phoneNothing, everPages you open; model, language-pack and block-list downloads; and, if you pick it, crops of on-screen text sent to Gemini
LicenceApache-2.0Apache-2.0
Full policyRead Read

Free, open source, and yours to check.

Both apps are Apache-2.0 on GitHub. Every release ships a signed APK with a SHA-256 checksum next to it.

ToolXStack Panelglass