# MyTOJI vs Opti Clinometer

The clearest difference is update cadence: Opti Clinometer at every 2 days against MyTOJI's every 3 months. MyTOJI's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.

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

MyTOJI ships an update every 3 months, Opti Clinometer every 2 days. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | MyTOJI | Opti Clinometer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/opti-clinometer/id6788531229/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 days** |
| Monetization | — | Free |
| Size | 127 MB | 2 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [GOGov, Inc.](https://appshunter.io/developer/351223719) | [Burak Kizilobek](https://appshunter.io/developer/6788531231) |

## What reviewers say

### MyTOJI

[App page](https://appshunter.io/ios/app/mytoji/id1661660451)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Opti Clinometer

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

This application transforms your iPhone into a precise field clinometer for measuring slopes. It offers two distinct measurement modes and is designed for practical field use with helpful visual aids and data logging capabilities.

**Highlights:** Two measurement modes: Sight and Camera, Rotating artificial horizon and bubble levels, Color-coded slope scale, Optional measurement photos with HUD, Coordinates saved with measurements, Measurement history with CSV export, Readings in percent and degrees

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is MyTOJI free?

MyTOJI 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 MyTOJI or Opti Clinometer have ads?

Neither MyTOJI nor Opti Clinometer shows ads.

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

MyTOJI ships an update every 3 months, and Opti Clinometer every 2 days. Most recently, MyTOJI was updated on October 30, 2026 and Opti Clinometer on October 28, 2026.

---

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