# Rhombus Key vs EcoSys

The clearest difference is rating: EcoSys at 5.0 against Rhombus Key's 4.3. EcoSys also leads on review sentiment (100% vs 74%). Rhombus Key's advantage is update cadence (every 3 weeks vs every 17 months) and ratings volume (71 vs 4). On price, ads, in-app purchases and monetization model there is nothing between them.

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

EcoSys holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Rhombus Key has 71 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 74% of Rhombus Key's written reviews are positive against 100% of EcoSys's.

Rhombus Key ships an update every 3 weeks, EcoSys every 17 months. The most recent releases landed on October 15, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Rhombus Key | EcoSys |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (71 ratings)](https://appshunter.io/ios/app/rhombus-key/id1669560104/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/ecosys/id6450518694/reviews)** |
| Number of ratings | **71** | 4 |
| Positive reviews | 74.1% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 17 months |
| Monetization | Free | Free |
| Size | 20 MB | 39 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 17+ |
| Developer | [Rhombus Systems, Inc.](https://appshunter.io/developer/1237841962) | [Intergraph Corporation](https://appshunter.io/developer/523042901) |

## What reviewers say

### Rhombus Key

[App page](https://appshunter.io/ios/app/rhombus-key/id1669560104)

Securely unlock doors directly from your smartphone. Replace physical keys and keycards with mobile credentials for fast, seamless building access. Manage multiple locations and favorite doors with a single login.

**Highlights:** Secure smartphone door unlocking, Mobile credentials for building access, Seamless waving to unlock, Favorite door navigation, Multi-location access, Centralized control via Rhombus Access Control

**In-app purchases:** none


### EcoSys

[App page](https://appshunter.io/ios/app/ecosys/id6450518694)

Access real-time project information and communicate effectively from anywhere. This app offers offline access, field reporting, HSE & Quality management, and tools for change requests, risk management, and task tracking.

**Highlights:** Real-time project information access, Offline mode for connectivity, Field reporting and log approval, HSE & Quality incident reporting, Change management workflows, Risk and issue tracking, Task and to-do management

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Rhombus Key free?

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

### Is EcoSys free?

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

### Which has better reviews, Rhombus Key or EcoSys?

EcoSys is rated higher. Rhombus Key averages 4.3 out of 5 from 71 ratings, while EcoSys averages 5.0 from 4 ratings.

### Do Rhombus Key or EcoSys have ads?

Neither Rhombus Key nor EcoSys shows ads.

### Which is updated more often, Rhombus Key or EcoSys?

Rhombus Key ships an update every 3 weeks, and EcoSys every 17 months. Most recently, Rhombus Key was updated on October 15, 2026 and EcoSys on October 17, 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.*