Showing 21–40 of 1,000 ranked alternatives.
Gokhan Turkben
Play, learn, and explore music
Play eight basic music notes with realistic sounds and animations. Learn to play children's songs through interactive musical notes. Explore musical exploration with a colorful interface designed for fun and learning.
Armchair Engineering
Solve right-angled triangles
Solve right-angled triangles by inputting known sides or angles. View step-by-step calculations and a scale drawing of the triangle. Access basic formulae. Enter angles in radians, decimal degrees, or degrees, minutes, seconds.
Pixtolab Technologies Inc.
Annotate photos and add watermarks
Annotate photos with text, drawings, and hand-drawn elements. Add watermarks and autographs. Create and share Photocards. Incorporate internet memes. Edit and enhance images for personal or professional use.
Catalystwo, LLC
Sync events with Google Calendar
Create and modify events using drag-and-drop gestures. Sync with Google Calendar. View and edit dates and events intuitively. Upload events to Google Calendar. Adjust event dates by dragging. Manage schedules efficiently on iPhone or iPod Touch.
Raymond Hill
Block ads and trackers automatically
Block ads and trackers using predefined rulesets like EasyList and EasyPrivacy. Customize filters by enabling additional rulesets via the options page. Prevent CSS and JS injection-based content filtering without requiring a background process.
妮 安
Log time with simple clicks
Log time automatically by creating blocks for tasks. Set daily goals and view progress over time. Export time logs and analyze activity patterns without manual input.
Seisei Ten
Manage contacts, create groups, add tasks
Manage contacts by creating, editing, or deleting individual entries. Organize contacts into groups via company names or manually. Drag and drop to edit groups. Search for contacts and send emails to entire groups. Sync data across devices.
PDF Technologies, Inc.
Edit PDFs, sign, and share documents
Read and annotate PDFs with highlighting, freehand drawings, and audio notes. Edit text, sign documents, and convert to other formats. Organize files, merge or split documents, and insert pages or hyperlinks. Import from computer or cloud.
30xi LLC
Track time across multiple jobs
Track time spent on tasks with weekly summaries, even when offline. Log manually or automatically. View time distribution across projects and days. Set reminders for time tracking. Export data for reporting.
Vincent Miethe
Manage appointments and to-dos
Manage appointments, to-dos, meetings, and reminders in one place. Set recurring events, adjust time zones, and customize views. Sync across devices and receive notifications. Export data and integrate with other apps.
Linguineo BVBA
Learn verbs and vocabulary
Learn with interactive lessons on tenses, vocabulary, and grammar. Practice verb conjugations, listen to words and phrases, and complete exercises. Access 300 vocabulary items organized into categories like colors.
TLA Systems Ltd.
Calculate with advanced scientific functions
Perform complex calculations with support for hexadecimal, octal, and binary. Use RPN mode and multi-line display. Access unit conversions, constants, and scientific notation. View a paper tape and use multiple undo/redo functions.
Apps are ranked by functional similarity, category fit, rating confidence, and popularity.