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Best Angle Measurement Apps for iPhone (2026)

6 apps ranked S through F · · Ranked by AppTierList, computed, never sold · JSON

Bubble Level for iPhone is the top-ranked of 6 angle measurement apps on iPhone, at S tier with 4.6/5 from 111,712 ratings.

  1. 1
    Bubble Level for iPhoneS
    Free download · ★ 4.6 · 111,712 ratings · score 92
  2. 2
    Measure Angles - Bubble LevelA
    Free download · ★ 4.2 · 2,021 ratings · score 84
  3. 3
    Protractor+A
    Free download · ★ 4.1 · 10,413 ratings · score 84
  4. 4
    Bubble Level Plus+C
    Free + IAP · ★ 4.5 · 15,358 ratings · score 68
  5. 5
    Pocket Bubble Level XXLC
    Free download · ★ 4.8 · 16,933 ratings · score 66

What belongs in this list

Measure the angle of an object or surface using the phone.

Not here: a level or bubble level alone; a distance or ruler measurement alone; a weight scale alone; a protractor image alone; a calculator for triangle math alone

How we pick

For this list we ask the App Store the same searches a person would, in several countries, and keep every app it returns. A model reads each app's listing and rejects the ones that only mention the use case. Every app that stays is scored out of 100 from four parts, each 0 to 100 and averaged with no weights: its App Store rating, how many people rated it, where the App Store itself ranks it for this list's searches, and how recently its current version shipped. An app showing Apple's Editors' Choice badge gets a fifth part of 100, which can only lift its score. Tiers follow fixed score bands: S from 90, A from 80, B from 70, C from 60, D from 50, F below. Read the full method →

S
Bubble Level for iPhone
A
Measure AnglesProtractor+
B
None at B yet
C
Bubble Level Plus+Pocket
D
Bubble Level Tool
F
None at F yet

Compare every app

  1. 1
    Bubble Level for iPhoneS
    Free download · ★ 4.6 · 111,712 ratings · score 92 · best in class
  2. 2
    Measure Angles - Bubble LevelA
    Free download · ★ 4.2 · 2,021 ratings · score 84 · excellent
  3. 3
    Protractor+A
    Free download · ★ 4.1 · 10,413 ratings · score 84 · excellent
  4. 4
    Bubble Level Plus+C
    Free + IAP · ★ 4.5 · 15,358 ratings · score 68 · situational
  5. 5
    Pocket Bubble Level XXLC
    Free download · ★ 4.8 · 16,933 ratings · score 66 · situational · provisional
  6. 6
    Bubble Level Tool - DigitalD
    Free + IAP · ★ 4.4 · 2,491 ratings · score 57 · weak

Questions people ask

What is the best angle measurement app for iPhone?
Bubble Level for iPhone, S tier, ranked #1 of 6, rated 4.6 by 111,712 people.
Which angle measurement apps are free?
6 of 6 are free to download: Bubble Level for iPhone (S), Measure Angles - Bubble Level (A), Protractor+ (A), Bubble Level Plus+ (C) and more. 2 of them sell in-app purchases.
Which angle measurement app has the best App Store rating?
Pocket Bubble Level XXL at 4.8 from 16,933 ratings.
How many angle measurement apps reach S or A tier?
3 of 6.

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