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. Memora remembers every birthday and has the wish ready to send. All three are free and open source, with no ads, no accounts and no tracking.

See the apps Source on GitHub

Three 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

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

More about ToolXStack

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

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

More about Panelglass

Panelglass settings: source language Japanese, target English, translation model and themes

どうする？ Japanese, as printed

Memora

Birthday reminders · Android 13+

Never miss a birthday, anniversary or festival. Memora reminds you early and again on the day, then has a wish ready to send on WhatsApp, SMS or email, as a message or a postcard. It works offline and keeps everyone you add on your phone.

Postcard designs: 5
Festival calendars: 22
Accounts needed: 0

Download APK Privacy policy

More about Memora

Memora month calendar with birthdays, anniversaries and festivals marked

Privacy, side by side

The short version of all three policies. ToolXStack never touches the network. Panelglass is a browser, so it does, and it tells you exactly when. Memora goes online only for festival dates and update checks.

Question	ToolXStack	Panelglass	Memora
Internet permission	Removed from the app	Yes, it’s a browser	Yes, for festival dates and updates
Data sent to SM NexStudio	Nothing	Nothing	Nothing
Analytics or crash reports	None	None	None
Ads	None	None, and it blocks them on sites	None
Account or sign-in	None	None	None
What leaves your phone	Nothing, ever	Pages you open; model, language-pack and block-list downloads; and, if you pick it, crops of on-screen text sent to Gemini	Requests for public festival dates and update checks. Never your people, dates or notes
Licence	Apache-2.0	Apache-2.0	GPL-3.0
Full policy	Read	Read	Read

Free, open source, and yours to check.

All three apps are open source on GitHub: ToolXStack and Panelglass under Apache-2.0, Memora under GPL-3.0. Every release ships a signed APK with a SHA-256 checksum next to it.

ToolXStack Panelglass Memora