# LD Atlas — Noise & Vibration Monitoring

> Bluetooth/WiFi connectivity for noise dosimeters and vibration meters. (iPhone/iPad app by PCB Piezotronics, Inc..)

- Source: https://appshunter.io/ios/app/ld-atlas/id1458129589 (this page in markdown: same URL + `.md`)
- Developer: [PCB Piezotronics, Inc.](https://appshunter.io/developer/1049795372)
- Category: Utilities
- Price: Free
- Rating: 5.00/5 from 4 App Store ratings
- Age rating: 4+
- Requires: iOS 14.0 · 201 MB
- Languages: English, French, German, Italian, Japanese, Korean, Portuguese, Russian, Chinese, Spanish and 3 more
- Released: 2019-06-05
- Data updated: 2026-07-05
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/ld-atlas/id1458129589/reviews.md

## What is LD Atlas?

LD Atlas allows you to communicate via Bluetooth or WiFi with Larson Davis Spartan Noise Dosimeters - Models 730 and 730IS, Human Vibration Meters - Model HVM200, Spartan 821/721, and SoundExpert 821/721.  You can view meter status, calibrate meters, make measurements, review measurement data, create and view PDF reports, and analyze data.
Due to restrictions introduced in iOS, this version of Atlas does not support the 831C. Please contact support for alternatives or assistance.

## Key features

- Bluetooth/WiFi connectivity
- Meter status monitoring
- Calibration
- Measurement execution
- Data review
- PDF report generation


## Frequently asked questions about LD Atlas

### What devices does LD Atlas support?

LD Atlas supports Larson Davis Spartan Noise Dosimeters - Models 730 and 730IS, Human Vibration Meters - Model HVM200, Spartan 821/721, and SoundExpert 821/721. Due to iOS restrictions, it does not support the 831C model.

### What are the main functions of LD Atlas?

LD Atlas allows users to view meter status, calibrate meters, make measurements, review measurement data, create PDF reports, and analyze collected data.

### Is LD Atlas free to use?

Yes, LD Atlas is available for free. It does not have any in-app purchases or advertisements.

### How often is LD Atlas updated?

The latest version is 1.804.87, last updated on May 22, 2026. Specific update frequency is not detailed, but the app is actively maintained.

### What is the age rating for LD Atlas?

LD Atlas has an age rating of 4+, making it suitable for a wide range of users.

### Can I use LD Atlas offline?

The app requires connectivity via Bluetooth or WiFi to communicate with the supported devices for measurements and data transfer.

### What platforms is LD Atlas available on?

LD Atlas is available on iPhone, iPad, and iPod devices.

### What is the user sentiment for LD Atlas based on ratings?

LD Atlas has received an excellent rating of 5.0 stars from 4 ratings, indicating very positive user satisfaction.

## Version history (last 5 releases)

### 1.806.89 — 2026-06-29

-Added support for PRM2105 environmental preamp
-Fixed missing 730 custom report settings after selecting Edit
-Fixed missing Exceedances and Sound Exposure in 730 report templates
-Fixed issues emailing Spartan reports
-Fixed “Show only active meters” so inactive meters are hidden, not forgotten

### 1.804.87 — 2026-05-22

• Fixed missing PDF attachments in 721/821 report emails.
• Fixed meter file list checkboxes for selecting files to download/delete.
• Fixed repeated untrusted SSL certificate prompts when connecting to 831C meters.

### 1.803.0 — 2026-05-12

• Fixed missing PDF attachments in 721/821 report emails.
• Fixed meter file list checkboxes for selecting files to download/delete.
• Fixed repeated untrusted SSL certificate prompts when connecting to 831C meters.

### 1.703.81 — 2026-04-03

Includes features released wtih G4 version 5.5.0, including support for back-erase, OBA spectrograph time slice, improved report PDFs, improved AudCal test report and certificates, and many other improvements.

### 1.701 — 2025-09-08

Updating with the new features and fixes released in G4 up through version 5.3.5.

## Apps similar to LD Atlas

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Wiser Vibe](https://appshunter.io/ios/app/wiser-vibe/id1580431886) | — | Free | Utilities |
| [VR Mobile - Vibration Testing](https://appshunter.io/ios/app/vr-mobile-vibration-testing/id469459743) | 4.7 (11) | Free | Utilities |
| [Vibration analysis](https://appshunter.io/ios/app/vibration-analysis/id817385888) | 4.0 (42) | Free | Utilities |
| [SmarterNoise Pro](https://appshunter.io/ios/app/smarternoise-pro/id1466745030) | 4.3 (29) | Free | Utilities |
| [Smart Vibration Meter・Detector](https://appshunter.io/ios/app/smart-vibration-meterdetector/id1121590218) | 4.1 (25) | Free | Utilities |
| [NLE Calc](https://appshunter.io/ios/app/nle-calc/id1266403464) | 2.8 (10) | Free | Utilities |

## More apps by PCB Piezotronics, Inc.

- [HVM200 Control](https://appshunter.io/ios/app/hvm200-control/id1049795373)
- [Larson Davis AudCal](https://appshunter.io/ios/app/larson-davis-audcal/id1372247170)

All apps by PCB Piezotronics, Inc.: https://appshunter.io/developer/1049795372

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-05.*