Comparison

Clinometer Bubble Level vs Opti Clinometer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Clinometer Bubble Level

Measure angles and surface flatness with this easy-to-use tool. Ideal for home decoration, aligning pictures, and calculating slopes or pitches. Features calibration and a hold option for convenience.

Highlights
  • Angle measurement
  • Surface flatness measurement
  • Calibration
  • Hold option
  • Auto fade unused level
  • Number indicators for angles
Features
Read full description

This level is designed for angle measurement and surface flatness measurement. You can use this level for home decoration, picture alignment, measure the angle of a slope, measure the verticality of a wall, roof pitch calculation, and so on. Features: - Angle measurement and surface flatness measurement - Calibration - Hold option - Auto fade unused level - Numbers to indicate angles - Easy to use

About

Opti Clinometer

Features
Read full description

Opti Clinometer turns your iPhone into a precise field clinometer — a modern alternative to classic optical instruments. TWO MEASUREMENT MODES • Sight mode: hold the phone horizontally at eye level and aim along its top edge, like a classic clinometer. The right-hand end points at your target. • Camera mode: aim with the on-screen crosshair and read the slope to whatever you are looking at. SIMPLE BY DESIGN Tap the screen once — the reading freezes and is saved. Tap again to resume. That is the whole workflow. BUILT FOR REAL FIELD WORK • Rotating artificial horizon and bubble levels help you hold steady • Color-coded slope scale: green below 8%, yellow 8–15%, red above 15% • Optional measurement photos with a viewfinder HUD • Coordinates saved with measurements and a satellite map • Measurement history with notes and CSV export • Readings shown in both percent and degrees NO NONSENSE No ads, no accounts, no tracking. The app collects no data at all.

Screenshots

Clinometer Bubble Level3 screens
Opti Clinometer4 screens

Verdict

The call

The clearest difference is update cadence: Opti Clinometer at every 2 days against Clinometer Bubble Level's every 49 months. Clinometer Bubble Level's advantage is device support (3 vs 1) and iOS requirement (9.0 vs 17.0). On price, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Clinometer Bubble Level ships an update every 49 months, Opti Clinometer every 2 days. The most recent releases landed on October 24, 2026 and October 19, 2026 respectively.

Scorecard3 real differences · 7 level
Clinometer Bubble Level versus Opti Clinometer: the parameters behind the verdict, then further details
ParameterClinometer Bubble LevelOpti Clinometer
PriceFreeFree
Rating3.9 (58 ratings) — better—
Positive reviews40.0% of reviews—
Number of ratings58 — better—
Update frequencyEvery 49 monthsEvery 2 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS9.0 — better17.0
Further details — not scored
Size24 MB2 MB
Age rating4+4+
Developer齐 陈Burak Kizilobek

In-app purchases

None

Clinometer Bubble Level

No in-app purchases

None

Opti Clinometer

No in-app purchases

Questions

Is Clinometer Bubble Level free?
Clinometer Bubble Level is free to download, with no in-app purchases.
Is Opti Clinometer free?
Opti Clinometer is free to download, with no in-app purchases.
Do Clinometer Bubble Level or Opti Clinometer have ads?
Neither Clinometer Bubble Level nor Opti Clinometer shows ads.
Which is updated more often, Clinometer Bubble Level or Opti Clinometer?
Clinometer Bubble Level ships an update every 49 months, and Opti Clinometer every 2 days. Most recently, Clinometer Bubble Level was updated on October 24, 2026 and Opti Clinometer on October 19, 2026.

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