# Sentry BD vs Copeland CRLDS

The clearest difference is update cadence: Sentry BD at every 3 months against Copeland CRLDS's every 17 months. 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.

Sentry BD ships an update every 3 months, Copeland CRLDS every 17 months. The most recent releases landed on September 7, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Sentry BD | Copeland CRLDS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/copeland-crlds/id6462698326/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 17 months |
| Monetization | — | Free |
| Size | 53 MB | 20 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Fronuse Co., Ltd](https://appshunter.io/developer/1660503827) | [Copeland LP](https://appshunter.io/developer/464252882) |

## What reviewers say

### Sentry BD

[App page](https://appshunter.io/ios/app/sentry-bd/id6450871060)

**Features:** macOS Compatibility

**In-app purchases:** none


### Copeland CRLDS

[App page](https://appshunter.io/ios/app/copeland-crlds/id6462698326)

This application enables users to configure, maintain, and interact with compatible gas detectors. It simplifies compliance with safety standards by providing an intuitive interface for setting alarms, managing maintenance, and viewing real-time measurements.

**Highlights:** Configure alarm levels and behavior, Manage digital and analog outputs, Access test mode for all functions, Generate calibration test reports, View current gas measurements, Acknowledge alarm/fault status

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

**In-app purchases:** none


## Frequently asked questions

### Is Sentry BD free?

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

### Is Copeland CRLDS free?

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

### Do Sentry BD or Copeland CRLDS have ads?

Neither Sentry BD nor Copeland CRLDS shows ads.

### Which is updated more often, Sentry BD or Copeland CRLDS?

Sentry BD ships an update every 3 months, and Copeland CRLDS every 17 months. Most recently, Sentry BD was updated on September 7, 2026 and Copeland CRLDS on September 25, 2026.

---

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