# Diedro Angle Finder & Level — Protractor, Clinometer, Ruler

> Protractor, Clinometer, Ruler (iPhone/iPad app by ROBERTO INSUA BRANDARIZ.)

- Source: https://appshunter.io/ios/app/diedro-angle-finder-and-level/id6818955422 (this page in markdown: same URL + `.md`)
- Developer: [ROBERTO INSUA BRANDARIZ](https://appshunter.io/developer/6804942729)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 18.0 · 9 MB
- Languages: American English, Catalan, Danish, Dutch, Finnish, French (France), German (Germany), Indonesian, Italian, Japanese and 12 more
- Released: 2026-10-19
- Data updated: 2026-10-22

## What is Diedro Angle Finder & Level?

Diedro measures angles with the hinge of iPhone Duo: open the phone against a corner and read the angle between its two halves. On any other iPhone it is a bubble level, a corner gauge and a true-scale ruler. No ads, no account.

ON iPHONE DUO: THE HINGE IS THE INSTRUMENT
• Measure. The interior angle, with its exterior, its supplement and the miter saw setting that joins two pieces in that corner.
• Square. Color and a tap tell you when you reach 90°, 45° and the usual workshop angles.
• Target. Pick an angle and be guided to it: how far, and which way. Use it to transfer an angle: measure it, save it, make it the target.
• Two-plane level. With the Duo folded, one half rests on the base and the other rises against the slope: you read both at once.
• A true-scale ruler whose zero is the fold.
• Hold and Auto hold. The reading freezes as soon as it is steady, so you can take the phone off the work and read it.
• A log of saved readings, and a two-step hinge calibration.
• Shut it, and the cover display keeps the last reading.

ON ANY iPHONE
• Bubble level. Lying flat, on two axes, or standing on its edge; in degrees and percent of slope. It zeroes in two positions, like a real level.
• Corner gauge. Rest the back of the iPhone on one face of a corner, then on the other: the turn between the two rests is the corner, with its exterior, its supplement and the miter saw setting. Two walls, a floor and a wall, the bevel of a blade.
• True-scale ruler in millimeters or inches (decimals and fractions). Check it with a bank card: the long side is 85.6 mm.
Measure, Square and Target read the hinge angle, so they only appear on iPhone Duo. Nothing is simulated on other iPhones.

DIEDRO PRO
On iPhone Duo, the live angle, the level and the ruler work without Diedro Pro. Diedro Pro unlocks the workshop tools: Hold and Auto hold, the Log, Square, Target, the two-plane level, calibration and the reading on the cover display. Pay once and keep it for good, or subscribe by the month; the subscription renews automatically until you cancel it. Both are shared with Family Sharing. On other iPhones nothing is locked.

HONEST ABOUT PRECISION
Diedro shows the resolution the sensor really delivers and never adds decimals that are not there. It is a handy instrument, not a certified one: check anything that matters against a tool you trust.

PRIVACY
No ads, no account, no tracking. The readings you save stay on your iPhone. Apple handles the purchase; RevenueCat checks its status without identifying you.

Privacy policy: https://roberib.github.io/legal/diedro/
Terms of use (Apple's standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Diedro Pro Monthly | $7.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Diedro Pro | $29.99 | one-time |


## Is Diedro Angle Finder & Level safe?

Not enough ratings yet to assess Diedro Angle Finder & Level.

## Is Diedro Angle Finder & Level legit?

Diedro Angle Finder & Level has limited verification signals. The AppsHunter Legitimacy Score for Diedro Angle Finder & Level is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.1.0 — 2026-10-20

No release notes.

## More apps by ROBERTO INSUA BRANDARIZ

- [Swipe Photo Cleaner — Limina](https://appshunter.io/ios/app/swipe-photo-cleaner-limina/id6804942727)
- [Rob the Phone: Safe Cracker](https://appshunter.io/ios/app/rob-the-phone-safe-cracker/id6820557806)

All apps by ROBERTO INSUA BRANDARIZ: https://appshunter.io/developer/6804942729

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-22.*