dBActive for the Optimus+ vs ProjectOffice
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
dBActive for the Optimus+
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The Cirrus dBActive app supports all Optimus+ sound level meters and connects to the instrument via Bluetooth. The application allows for live data to be viewed, meaning you can leave the instrument in potentially dangerous environments without putting yourself at risk. It also allows for previous measurement data to be viewed, as well as the ability to stop and start measurements from a remote location. The Optimus+ instruments measure all noise parameters simultaneously, including average sound level, maximum sound level, and octave band filters. Features include: - View live measurement data from the instrument - Start and stop measurements - View previous measurement data - Change instrument settings and measurement parameters dBActive is compatible with all Optimus+ variants. Find more information about the Optimus+ at https://cirrusresearch.com/products/sound-level-meters/
ProjectOffice
This mobile application allows users to log their work activities, track expenses, and report on their progress. It provides a centralized platform for managing daily tasks and financial expenditures related to projects.
- Activity reporting
- Work log creation
- Expense tracking
- Project progress monitoring
- Centralized task management
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Mobile application to report activity, work log and expense reporting.
Screenshots
Verdict
The clearest difference is update cadence: ProjectOffice at every 3 weeks against dBActive for the Optimus+'s every 3 months. dBActive for the Optimus+'s advantage is iOS requirement (12.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
dBActive for the Optimus+ ships an update every 3 months, ProjectOffice every 3 weeks. The most recent releases landed on October 11, 2026 and September 24, 2026 respectively.
| Parameter | dBActive for the Optimus+ | ProjectOffice |
|---|---|---|
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| Update frequency | Every 3 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 27 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Cirrus Research | Project Office |
In-app purchases
dBActive for the Optimus+
No in-app purchases
ProjectOffice
No in-app purchases
Questions
Is dBActive for the Optimus+ free?
Is ProjectOffice free?
Do dBActive for the Optimus+ or ProjectOffice have ads?
Which is updated more often, dBActive for the Optimus+ or ProjectOffice?
Other comparisons
