Helpful apps, bursting with practical solutions.

Inquest

One case. One day. Solve it.

A daily fair-play detective game: one mystery opens worldwide at midnight. Examine evidence, interview suspects, file your verdict, and share results spoiler-free.

Rinmath Math Number Puzzle

Daily arithmetic logic puzzle

Rotate three concentric rings so every spoke adds up to the day's target. A calm, daily number puzzle for quick minds.

Sweet Showdown Match Puzzle

Ad-free kids baking game

A cozy donut-decorating game for ages 4-6: add frosting, sprinkles, and candy, then show your creation to three funny judges. No ads, no tracking.

Swaydar

Name the keystone lever

A daily persuasion-deduction puzzle: read one real-world pitch, spot the influence levers, and name the keystone that makes the whole thing collapse.

Washi Stash Tape Tracker

Never buy a duplicate roll

An offline, private catalog for washi tape collectors. Track every roll's color, pattern, width, and shop, and get warned in Shopping Mode when you already own a similar one.

Postcard Archive

Private catalog for postcard collectors

Record each card's front and back, place, era, condition, stamps, and postmarks. Search, stats, and a timeline, all on device.

Plush Bean Tracker

Private, offline plush collection tracker

Add plush as Owned, Wanted, or Trading, with photos, cuddle ratings, and purchase logs. Watch your completion grow, stored privately on device.

Plumes

Bird feather ID & field guide

A calibrated, offline feather atlas built on the USFWS Feather Atlas. Identify a found feather, compare it at centimeter scale, and learn the legal context.

Brinepost

Sourdough, kombucha, kimchi & yoghurt

A private, offline ferment tracker with day clocks, feeding reminders, a photo log, and a built-in guide for your starters, brews, and batches.

ManualNest: Warranty Vault

Warranty reminders, manuals, receipts & repair records — private, offline vault.

Never miss a covered repair window again. ManualNest reminds you — 60, 30, 7, and 1 day before a warranty expires — so you book the repair while it's still covered, not the week after.

Markline

Find & log NGS survey marks

795,000+ NGS survey marks bundled fully offline. Map them, read the full datasheet, and log every recovery, no account, no signal needed in the field.

PuzAI

Jigsaw sorting helper

A private, on-device helper for real jigsaw puzzles. Sort your pile into color buckets, pull out edges and corners, and get honest area hints.

PartyPilot

Turn party notes into a host plan

A planning workspace that turns rough notes into a structured host plan: guest counts, quantities, shopping groups, budget, timeline, and invite copy.

Nine Steep Tea Brew Timer

Gongfu tea timer & journal

A multi-infusion gongfu brewing companion: nine grounded presets, an auto-advancing steep timer, and per-infusion tasting notes for serious loose-leaf drinkers.

Periodic Table: Elements Lab

Chemistry study, beautifully illustrated

All 118 elements with original illustrations and sourced data, paired with an FSRS spaced-repetition system that schedules each card for the moment you're about to forget it.

Cue

Study with your ears

A hands-free, on-device flashcard app. Turn notes into audio cards and get quizzed out loud through your earbuds while your hands and eyes are busy.

Chemorgic

A calm guide to a cleaner home

A private, room-by-room companion offering practical, budget-aware swaps with honest evidence levels. Fully offline, no accounts, no tracking.

Cari Art Design

Caricatures drawn just for you

Snap a selfie and watch a friendly character artist draw your caricature live, sketch to color, processed privately on device, with no uploads.

Bearing: Field Almanac

Know your sky, tides & seasons

Tides, sky, weather, birds & blooms for your region — one calm page, on-device.

Tidal Pool: Tidepool Timing

Plan the low tide. Meet life.

Low-tide windows for 33 US & Canada coasts, plus 73 species cards. No tracking.