Right Angle vs To Do List RUIX
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Right Angle
This app calculates triangles and segments of circles. It supports various angle input formats and offers solutions for oblique triangles and circle segments with optional add-ons. A right triangle calculator is included for free.
- Triangle solver
- Circle segment calculator
- Multiple angle units (degrees, radians, DMS, grade, x/12)
- Oblique triangle solver (add-on)
- Circle segment solver (add-on)
- Free right triangle calculator
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Right Angle is a calculator built for carpenters, builders, surveyors, machinists, and engineers — anyone who needs to solve a triangle, a trapezoid, or a circle without reaching for a notepad and the law of sines. Enter any valid combination of sides and angles and Right Angle solves the rest, including perimeter and area. The right triangle calculator is included for free; every other shape unlocks with a one-time Pro purchase or subscription. SHAPES • Right triangle (free) • Oblique triangle • Isosceles, right, and general trapezoids • Full circle — enter radius, diameter, or circumference • Segment of a circle ANGLE FORMATS • Decimal degrees • Radians • Degrees / minutes / seconds (DMS) • Percent grade • Pitch (x-over-12) LENGTH FORMATS • Decimal — the original, unitless entry. Best for metric. • Feet, inches & fractions — type values like 2' 5 1/2". • Inches & fractions — type values like 40 1/2". Pick a fraction precision from 1/2 down to 1/64 inch. Inputs and outputs both use the format you choose, and you can switch any time from Settings. DESIGNED FOR THE JOB SITE • A custom on-screen keyboard puts the symbols you need — feet, inches, fraction slash, degree, prime, double-prime — one tap away. • Helpful errors when an input combination can't be solved, instead of silent failures. • Available in English and Spanish — iOS picks the language to match your device. • Full VoiceOver support across the keyboard, input fields, shape diagrams, and results. Animations respect the Reduce Motion setting. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy policy: http://rightangleapp.com/privacy.html
To Do List RUIX
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To Do List RUIX is a clean and simple task manager designed to help you plan your day, manage tasks, organize goals, and stay focused. It is built for people who want a focused productivity tool without unnecessary complexity. KEY FEATURES RuixLabs Voice Assistant Listen to your daily tasks and use voice input to add tasks more easily. Voice Task Playback Play today’s task list with a selected voice assistant. Voice Input Quickly add tasks using voice input. Male & Female Voice Options Choose between male and female voice assistants. Animated Voice Avatar Use a polished RuixLabs Voice page with an animated avatar experience. Task Reminders Set reminders for important tasks, appointments, deadlines, and personal commitments. Simple Task Management Create, edit, organize, and review tasks with a clean interface. Daily Task Tracking Plan your day and track completed and pending tasks. Task Categories Organize tasks by General, Work, Personal, Planning, Health, Study, or custom categories. Custom Categories Create categories for your lifestyle, projects, hobbies, business, learning goals, or routines. Priority Levels Set Low, Medium, or High priority to focus on important tasks first. Monthly Focus & Goals Set monthly focus areas and goals to guide productivity and personal growth. Monthly & Yearly Reviews Review goals, task performance, completion rates, and productivity trends. Category Task Review Review task progress by category, including custom categories. Category Summary Engine Analyze any category and view yearly summaries, monthly progress, completion rates, insights, top activities, task history, and trends. Professional Templates Generate editable summaries based on completed tasks and category records, including: • Work Performance Review • Promotion Review • Bonus Review • Project Progress Summary These templates can help you prepare work reviews, promotion discussions, project summaries, personal achievements, and category-based reports. Export Reports Export yearly goal summaries, yearly task summaries, monthly reviews, and category summaries as PDF reports. Copy Summaries Copy category summaries and templates for emails, reports, meetings, reviews, and personal records. Clean Settings Page Manage categories, templates, summaries, reports, voice settings, and app preferences in one place. Light, Dark & System Themes Choose the appearance that matches your working style. WHO IS THIS APP FOR? To Do List RUIX is useful for students, office workers, managers, freelancers, entrepreneurs, project teams, productivity users, busy parents, personal planners, and anyone who wants a simple task system. WHY TO DO LIST RUIX? Many productivity apps become too complicated. To Do List RUIX focuses on simple planning, clear task tracking, useful reviews, voice-assisted task planning, category summaries, and practical productivity tools. With RuixLabs Voice, you can listen to daily tasks and add tasks by voice, making task planning feel more natural and convenient. With the Category Summary Engine and Professional Templates, you can turn daily task records into yearly reviews, project summaries, work performance reports, and personal productivity insights. Built with the RuixLabs philosophy: Simple Tools. Clear Thinking. Better Productivity. More Apps from RuixLabs Visit https://ruixlabs.com
Screenshots
Verdict
The clearest difference is in-app purchases: To Do List RUIX at none against Right Angle's 9. On price, update cadence, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Right Angle sells 9 in-app purchases, starting at $2.99 per month. To Do List RUIX asks for nothing beyond the download.
Right Angle ships an update every 6 days, To Do List RUIX every 9 days. The most recent releases landed on October 19, 2026 and October 12, 2026 respectively.
| Parameter | Right Angle | To Do List RUIX |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (30 ratings) — better | — |
| Positive reviews | 73.3% of reviews | — |
| Number of ratings | 30 — better | — |
| Update frequency | Every 6 days — better | Every 9 days |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 26.0 — better | 26.5 |
| Further details — not scored | ||
| Size | 3 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Jerry Mayers | CHEN RUI |
Bugs and requests
Right Angle
Reported bugs
5 issues- App crashes after startup
- Update caused app to crash
- Loss of previously purchased unlocked app
- Keyboard covers input fields
- App changes mm to unspecified units
Requested features
9 requests- Restore fraction support
- Restore feet and inches support
- Provide both angles of a right triangle
- Allow scrolling or hiding the keyboard
- Bundling with other tools
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- Add metric units (millimeters)
- Option to choose metric inputs
- Dark mode option
- Advanced analytics dashboard
To Do List RUIX
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Right Angle
- Renews Monthly14 Days trial$2.991 Month
- Renews Yearly1 Month trial$14.991 Year
- Small Tip$2.99
- Medium Tip$4.99
- Segments Calculator$5.99
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- Oblique Triangle Calculator$5.99
- Segment & Oblique Triangle$6.99
- Large Tip$9.99
- Huge Tip$29.99
To Do List RUIX
No in-app purchases
Questions
Is Right Angle free?
Is To Do List RUIX free?
Do Right Angle or To Do List RUIX have ads?
Which is updated more often, Right Angle or To Do List RUIX?
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