# InspectFlow+ vs Prometheus Mobile STO

The clearest difference is update cadence: InspectFlow+ at every 3 weeks against Prometheus Mobile STO's every 2 months. Prometheus Mobile STO's advantage is iOS requirement (13.0 vs 15.6). 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.

InspectFlow+ ships an update every 3 weeks, Prometheus Mobile STO every 2 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | InspectFlow+ | Prometheus Mobile STO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (11 ratings)](https://appshunter.io/ios/app/inspectflow-plus/id1559595673/reviews)** | — |
| Number of ratings | **11** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free | — |
| Size | 179 MB | 34 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [HUVRdata, LLC](https://appshunter.io/developer/1433368084) | [PROMETHEUS GROUP, INC.](https://appshunter.io/developer/1554172551) |

## What reviewers say

### InspectFlow+

[App page](https://appshunter.io/ios/app/inspectflow-plus/id1559595673)

Digitize industrial asset inspections with customizable checklists on your mobile device. Capture data, photos, and videos offline, ensuring consistent and accurate inspection records for teams in the field. Seamlessly sync data when connectivity is available.

**Highlights:** Digitize inspection checklists, Capture photos and videos, Offline data collection, Standardize inspections, Seamless data syncing, Customizable line items and sections

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

**In-app purchases:** none


### Prometheus Mobile STO

[App page](https://appshunter.io/ios/app/prometheus-mobile-sto/id6452803445)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is InspectFlow+ free?

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

### Is Prometheus Mobile STO free?

Prometheus Mobile STO is free to download, with no in-app purchases.

### Do InspectFlow+ or Prometheus Mobile STO have ads?

Neither InspectFlow+ nor Prometheus Mobile STO shows ads.

### Which is updated more often, InspectFlow+ or Prometheus Mobile STO?

InspectFlow+ ships an update every 3 weeks, and Prometheus Mobile STO every 2 months. Most recently, InspectFlow+ was updated on November 3, 2026 and Prometheus Mobile STO on November 3, 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.*