# Opti vs tec.dloto

The clearest difference is update cadence: Opti at monthly against tec.dloto's every 3 months. Opti also leads on iOS requirement (11.0 vs 15). On price, ads, in-app purchases and device support there is nothing between them.

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

Opti ships an update monthly, tec.dloto every 3 months. The most recent releases landed on September 17, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Opti | tec.dloto |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/tecdloto/id6748346488/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 3 months |
| Monetization | — | Free |
| Size | 30 MB | 38 MB |
| Requires iOS | **11.0** | 15 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hydrite Chemicals](https://appshunter.io/developer/1702029715) | [K.A. Schmersal GmbH & Co. KG.](https://appshunter.io/developer/627399770) |

## What reviewers say

### Opti

[App page](https://appshunter.io/ios/app/opti-lock/id6670614547)

**Features:** macOS Compatibility

**In-app purchases:** none


### tec.dloto

[App page](https://appshunter.io/ios/app/tecdloto/id6748346488)

This app digitizes Lockout-Tagout (LOTO) procedures for industrial environments, replacing paper-based systems with a traceable digital workflow. It enables safer, faster execution of energy isolation tasks with features like QR code scanning and image capture for verification.

**Highlights:** End-to-end LOTO execution with guided workflows, QR code scanning for machine access, Digital approval workflows for LOTO requests, Image capture for compliance verification, Secure and traceable audit trails, Cloud-based centralized control for multiple sites

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

**In-app purchases:** none


## Frequently asked questions

### Is Opti free?

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

### Is tec.dloto free?

tec.dloto is free to download, with no in-app purchases.

### Do Opti or tec.dloto have ads?

Neither Opti nor tec.dloto shows ads.

### Which is updated more often, Opti or tec.dloto?

Opti ships an update monthly, and tec.dloto every 3 months. Most recently, Opti was updated on September 17, 2026 and tec.dloto on September 15, 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.*