# Backflow Pro vs HART (LAP)

The clearest difference is in-app purchases: HART (LAP) at none against Backflow Pro's 5. HART (LAP) also leads on update cadence (every 5 days vs every 3 weeks). Backflow Pro's advantage is device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Backflow Pro sells 5 in-app purchases, starting at $3.99 per month. HART (LAP) asks for nothing beyond the download.

Backflow Pro ships an update every 3 weeks, HART (LAP) every 5 days. The most recent releases landed on October 2, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Backflow Pro | HART (LAP) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/backflow-pro/id1643496459/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 22 MB | 45 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Time Lock Documentation, LLC](https://appshunter.io/developer/1196195710) | [Forseti LLC](https://appshunter.io/developer/1695074140) |

## What reviewers say

### Backflow Pro

[App page](https://appshunter.io/ios/app/backflow-pro/id1643496459)

This app digitizes backflow prevention documentation, creating secure, visual records with time-stamped photos and GPS data. It streamlines compliance letters, invoices, and repair tracking for building and facility professionals.

**Highlights:** Digital backflow prevention program creation, Time-stamped and GPS-stamped photo embedding, Electronic signature capture, Automated compliance letters and invoices, Cloud syncing across multiple devices, Scheduling calendar with push notifications, Organized file storage by project and client

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stand Alone Plan | $3.99 | per month |
| Bronze Plan | $29.99 | per month |
| Silver Plan | $49.99 | per month |
| Gold Plan | $71.99 | per month |
| Platinum Plan | $80.99 | per month |


### HART (LAP)

[App page](https://appshunter.io/ios/app/hart-lap/id6463635063)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Backflow Pro free?

Backflow Pro is free to download, with in-app purchases available.

### Is HART (LAP) free?

HART (LAP) is free to download, with no in-app purchases.

### Do Backflow Pro or HART (LAP) have ads?

Neither Backflow Pro nor HART (LAP) shows ads.

### Which is updated more often, Backflow Pro or HART (LAP)?

Backflow Pro ships an update every 3 weeks, and HART (LAP) every 5 days. Most recently, Backflow Pro was updated on October 2, 2026 and HART (LAP) on September 29, 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.*