# FLOWatch vs OBD2UDS Car Scanner & OBD2

The clearest difference is in-app purchases: FLOWatch at none against OBD2UDS Car Scanner & OBD2's 2. OBD2UDS Car Scanner & OBD2's advantage is update cadence (fortnightly vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. OBD2UDS Car Scanner & OBD2 sells 2 in-app purchases, starting at $1.99 per month. FLOWatch asks for nothing beyond the download.

FLOWatch ships an update every 3 months, OBD2UDS Car Scanner & OBD2 fortnightly. The most recent releases landed on October 21, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | FLOWatch | OBD2UDS Car Scanner & OBD2 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/flowatch/id1426926421/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 29 MB | 66 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [FLOWatch LLC](https://appshunter.io/developer/1426926420) | [Rich Pearl Limited Corporation](https://appshunter.io/developer/1811276377) |

## What reviewers say

### FLOWatch

[App page](https://appshunter.io/ios/app/flowatch/id1426926421)

This app helps manage operational data for water and wastewater treatment plants. It tracks data, manages assets, and handles work orders and compliance reporting, even in areas with limited connectivity.

**Highlights:** Track water quality data, Manage plant assets, Work order management, Compliance reporting, Offline data storage, Mobile and web integration

**Features:** macOS Compatibility

**In-app purchases:** none


### OBD2UDS Car Scanner & OBD2

[App page](https://appshunter.io/ios/app/obd2uds-car-scanner-and-obd2/id6762538700)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $1.99 | per month |
| Premium Yearly | $9.99 | per year |


## Frequently asked questions

### Is FLOWatch free?

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

### Is OBD2UDS Car Scanner & OBD2 free?

OBD2UDS Car Scanner & OBD2 is free to download, with in-app purchases available.

### Do FLOWatch or OBD2UDS Car Scanner & OBD2 have ads?

Neither FLOWatch nor OBD2UDS Car Scanner & OBD2 shows ads.

### Which is updated more often, FLOWatch or OBD2UDS Car Scanner & OBD2?

FLOWatch ships an update every 3 months, and OBD2UDS Car Scanner & OBD2 fortnightly. Most recently, FLOWatch was updated on October 21, 2026 and OBD2UDS Car Scanner & OBD2 on October 19, 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.*