# RDrive vs Sentinel Metrics

The clearest difference is update cadence: RDrive at every 3 weeks against Sentinel Metrics's every 4 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.

RDrive ships an update every 3 weeks, Sentinel Metrics every 4 months. The most recent releases landed on October 12, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | RDrive | Sentinel Metrics |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Monetization | Free | — |
| Size | 191 MB | 60 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Tsz Him Wong](https://appshunter.io/developer/1185383958) | [Portcullis Acuity](https://appshunter.io/developer/1620529166) |

## What reviewers say

### RDrive

[App page](https://appshunter.io/ios/app/rdrive/id1489680554)

Capture field data, manage defects, and automate project workflows with this app. Plot issues, site findings, and photos directly on plans, link documents, and generate professional reports. Sync data seamlessly via Wi-Fi or 4G.

**Highlights:** Plot issues and findings on plans, Defect management suite, Site inspections and progress monitoring, Professional report generation, Mobile document repository, Sync data via Wi-Fi or 4G

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

**In-app purchases:** none


### Sentinel Metrics

[App page](https://appshunter.io/ios/app/sentinel-metrics/id6767351254)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RDrive free?

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

### Is Sentinel Metrics free?

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

### Do RDrive or Sentinel Metrics have ads?

Neither RDrive nor Sentinel Metrics shows ads.

### Which is updated more often, RDrive or Sentinel Metrics?

RDrive ships an update every 3 weeks, and Sentinel Metrics every 4 months. Most recently, RDrive was updated on October 12, 2026 and Sentinel Metrics on October 2, 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.*