Ruler with Caliper, Protractor vs Caliper
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Ruler with Caliper, Protractor
This app transforms your device into a precise digital measuring tool. It offers accurate measurements for various objects and distances using your camera, with multiple units and offline functionality.
- Accurate measurements via camera
- Measure small objects to large distances
- User-friendly interface
- Multiple measurement units (inches, cm)
- Virtual ruler on screen
- Save and share measurements
- Offline accessibility
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# Ruler โ Digital Ruler & Tape Measure Turn your smartphone into a precise measuring tool with **Ruler โ Digital Ruler & Tape Measure**. Whether you're measuring small objects, checking angles, finding distances, or ensuring a perfectly level surface, this all-in-one toolkit provides everything you need in one easy-to-use app. Perfect for students, engineers, architects, designers, DIY enthusiasts, woodworkers, and everyday use. ## Features **Digital Ruler** Measure the length and width of objects directly on your phone screen with accurate calibration. **Tape Measure** Quickly measure objects using your device with an easy-to-read digital measuring interface. **Caliper** Measure thickness, internal diameter, external diameter, and depth with precision. Great for mechanical parts, jewellery, hardware, and engineering tasks. **Pinpoint Measurement** Measure the exact distance between two fingers on your screen for quick and convenient measurements. **Spirit Level** Check whether surfaces are perfectly horizontal or vertical using your phone's built-in sensors. Ideal for hanging pictures, installing shelves, and DIY projects. **Protractor** Measure and draw angles in degrees with an accurate digital protractor for school, construction, and design work. **Calibration Tool** Calibrate the ruler to your device for reliable and precise measurements across different screen sizes. ## Why Choose Ruler? * Fast and easy to use * Accurate digital measurements * Multiple measuring tools in one app * Clean and intuitive interface * Suitable for home, school, office, workshop, and construction * Works on most iOS devices Whether you're measuring furniture, checking angles, calculating dimensions, or levelling surfaces, **Ruler โ Digital Ruler & Tape Measure** gives you the essential tools you need wherever you go. Download now and carry a complete measuring toolkit in your pocket. Privacy Policy : https://forms.gle/dnBUgnpqw4AREio97 Terms of Use : https://forms.gle/2uy2JqJa2JjkTZpo8
Caliper
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Caliper is a pocket precision toolbox โ the measuring tools you reach for around the house, in one clean app. FOUR INSTRUMENTS โข Bubble Level โ 1-axis and surface. A real glycerin vial that turns true at 0.0ยฐ. โข Ruler โ an on-screen scale in mm, cm, or inches. โข Angle Finder โ a protractor and a tilt clinometer, with roof pitch and grade. โข Sound โ a quick decibel check of the room. GUIDED JOBS Do not just read a number โ get the job done. Hang a Picture, Level a Shelf, Roof Pitch, Level Furniture: each walks you through it and saves the result. A MEASUREMENT LOG Keep every reading and group them into projects โ the kitchen shelf, the living-room frames. PRECISION Calibrate the level and ruler with a fine tilt offset, and feel a firm haptic tick the moment a reading is true. HONEST BY DESIGN No ads. No tracking. No accounts. Everything is measured on your device and stays there โ Caliper collects no data. The four instruments are free, and the log keeps your most recent 25 readings. Caliper Pro unlocks every guided Job, the unlimited log with projects, and precision calibration. Note: readings depend on your device sensors and are intended for everyday use, not certified measurement. Caliper Pro is an auto-renewing subscription, offered monthly or yearly with a 7-day free trial. Payment is charged to your Apple Account at confirmation of purchase. It renews automatically unless cancelled at least 24 hours before the current period ends; manage or cancel in Settings > Apple Account > Subscriptions. Terms of Use: https://theknack2020-sketch.github.io/caliper/terms-of-use.html Privacy Policy: https://theknack2020-sketch.github.io/caliper/privacy-policy.html
Screenshots
Verdict
The clearest difference is in-app purchases: Caliper at none against Ruler with Caliper, Protractor's 3. Caliper also leads on ads (none vs shown) and update cadence (every 6 days vs every 28 months). On price, device support and iOS requirement there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Ruler with Caliper, Protractor sells 3 in-app purchases, starting at $3.99 per 7 days. Caliper asks for nothing beyond the download.
Ruler with Caliper, Protractor ships an update every 28 months, Caliper every 6 days. The most recent releases landed on November 2, 2026 and October 25, 2026 respectively.
| Parameter | Ruler with Caliper, Protractor | Caliper |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | โ |
| Update frequency | Every 28 months | Every 6 days โ better |
| Ads | Yes | No โ better |
| In-app purchases | Yes | No โ better |
| Monetization | Free with in-app purchases | โ |
| Devices | iPhone, iPad โ better | iPhone |
| Requires iOS | 16.0 โ better | 17.0 |
| Further details โ not scored | ||
| Size | 6 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Bhavinkumar Satashiya | UFUK OZDEMIR |
In-app purchases
Ruler with Caliper, Protractor
- Weekly$3.997 Days
- Yearly$39.991 Year
- Lifetime$49.99
Caliper
No in-app purchases
Questions
Is Ruler with Caliper, Protractor free?
Is Caliper free?
Do Ruler with Caliper, Protractor or Caliper have ads?
Which is updated more often, Ruler with Caliper, Protractor or Caliper?
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