Clinometer Bubble Level vs Opti Clinometer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Angle measurement
- Surface flatness measurement
- Calibration
- Hold option
- Auto fade unused level
- Number indicators for angles
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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
Opti Clinometer
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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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
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.
| Parameter | Clinometer Bubble Level | Opti Clinometer |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (58 ratings) — better | — |
| Positive reviews | 40.0% of reviews | — |
| Number of ratings | 58 — better | — |
| Update frequency | Every 49 months | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 9.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 24 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | 齐 陈 | Burak Kizilobek |
In-app purchases
Clinometer Bubble Level
No in-app purchases
Opti Clinometer
No in-app purchases
Questions
Is Clinometer Bubble Level free?
Is Opti Clinometer free?
Do Clinometer Bubble Level or Opti Clinometer have ads?
Which is updated more often, Clinometer Bubble Level or Opti Clinometer?
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