# Clinometer+ vs Opti Clinometer

The clearest difference is in-app purchases: Opti Clinometer at none against Clinometer+'s 1. Opti Clinometer also leads on update cadence (every 2 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Clinometer+ sells 1 one-off in-app purchase. Opti Clinometer asks for nothing beyond the download.

Clinometer+ ships an update every 2 months, Opti Clinometer every 2 days. The most recent releases landed on October 13, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Clinometer+ | Opti Clinometer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (1K ratings)](https://appshunter.io/ios/app/clinometer-plus/id1494068762/reviews)** | — |
| Number of ratings | **1K** | — |
| Positive reviews | 48.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 16 MB | 2 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Tue Nguyen Minh](https://appshunter.io/developer/434811167) | [Burak Kizilobek](https://appshunter.io/developer/6788531231) |

## What reviewers say

### Clinometer+

[App page](https://appshunter.io/ios/app/clinometer-plus/id1494068762)

This utility app functions as a car inclinometer to help drivers understand road conditions for safer driving. It requires a car phone holder and offers a calibration feature for accurate readings on flat surfaces.

**Highlights:** Car inclinometer, Road condition analysis, Safe driving aid, Calibration feature, Easy to use

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Features | $1.99 | one-time |

**What reviewers like**

- 👍 Cool app
- 👍 Useful for work
- 👍 Easy to use

**What reviewers complain about**

- 💰 Not free to use
- 🐛 Terrible calibration
- 🔍 Deceptive free features

**Reported bugs**

- Gave child a virus that searched for pornography
- Doesn't function at all

**Requested features**

- Ability to mount at any angle and calibrate
- Dampened response speed


### Opti Clinometer

[App page](https://appshunter.io/ios/app/opti-clinometer/id6788531229)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Clinometer+ free?

Clinometer+ is free to download, with in-app purchases available.

### Is Opti Clinometer free?

Opti Clinometer is free to download, with no in-app purchases.

### Do Clinometer+ or Opti Clinometer have ads?

Neither Clinometer+ nor Opti Clinometer shows ads.

### Which is updated more often, Clinometer+ or Opti Clinometer?

Clinometer+ ships an update every 2 months, and Opti Clinometer every 2 days. Most recently, Clinometer+ was updated on October 13, 2026 and Opti Clinometer on October 3, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*