# Onlock Smart Lock vs ConstructionEquations

The clearest difference is price: Onlock Smart Lock at Free against ConstructionEquations's $0.99. Onlock Smart Lock also leads on in-app purchases (none vs 1) and update cadence (every 3 weeks vs every 2 months). On ads and device support there is nothing between them.

Onlock Smart Lock is free to download; ConstructionEquations costs $0.99 up front. ConstructionEquations sells 1 one-off in-app purchase. Onlock Smart Lock asks for nothing beyond the download.

Onlock Smart Lock ships an update every 3 weeks, ConstructionEquations every 2 months. The most recent releases landed on October 1, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Onlock Smart Lock | ConstructionEquations |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/constructionequations/id6479582534/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | — | Paid |
| Size | 96 MB | 8 MB |
| Requires iOS | **10** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Onlock Smart Lock](https://appshunter.io/developer/1338716948) | [Robert J Sarvis Jr](https://appshunter.io/developer/1531648349) |

## What reviewers say

### Onlock Smart Lock

[App page](https://appshunter.io/ios/app/onlock-smart-lock/id1338716949)

**Features:** macOS Compatibility

**In-app purchases:** none


### ConstructionEquations

[App page](https://appshunter.io/ios/app/constructionequations/id6479582534)

Access essential construction equations with clear explanations. This utility app simplifies complex formulas for better comprehension and application in the field.

**Highlights:** Common construction equations, Equation descriptions, Easy access reference, Formula comprehension aid

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Advanced Equations | $0.99 | one-time |


## Frequently asked questions

### Is Onlock Smart Lock free?

Onlock Smart Lock is free to download, with no in-app purchases.

### Is ConstructionEquations free?

ConstructionEquations costs $0.99, and also offers in-app purchases.

### Do Onlock Smart Lock or ConstructionEquations have ads?

Neither Onlock Smart Lock nor ConstructionEquations shows ads.

### Which is updated more often, Onlock Smart Lock or ConstructionEquations?

Onlock Smart Lock ships an update every 3 weeks, and ConstructionEquations every 2 months. Most recently, Onlock Smart Lock was updated on October 1, 2026 and ConstructionEquations on October 7, 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.*