# BaseCalc Plumbing Calculator vs Flowbox

The clearest difference is iOS requirement: Flowbox at 13.0 against BaseCalc Plumbing Calculator's 16.4. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. BaseCalc Plumbing Calculator sells 2 in-app purchases, starting at $7.00 per month and Flowbox sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 31, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | BaseCalc Plumbing Calculator | Flowbox |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/basecalc-plumbing-calculator/id6786117253/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Freemium | — |
| Size | 61 MB | 25 MB |
| Requires iOS | 16.4 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [BASEMAPPED LLC](https://appshunter.io/developer/1896354976) | [GABRIELE CHESI](https://appshunter.io/developer/6793043905) |

## What reviewers say

### BaseCalc Plumbing Calculator

[App page](https://appshunter.io/ios/app/basecalc-plumbing-calculator/id6786117253)

This professional tool offers 18 essential calculators for plumbing field work, including pipe sizing, pressure drop, and drainage. It saves calculations, generates job worksheets, and exports PDFs, all while working offline.

**Highlights:** 18 plumbing calculators, Pipe sizing and pressure drop, Drainage and vent sizing, Water heater and gas pipe calculations, Save calculation history, Generate job worksheets, Export PDF worksheets

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plumbing Pro Monthly | $7.00 | per month |
| Plumbing Pro Yearly | $50.00 | per year |


### Flowbox

[App page](https://appshunter.io/ios/app/flowbox-plumber-toolkit/id6801521180)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Flowbox Pro Unlock | $8.99 | one-time |


## Frequently asked questions

### Is BaseCalc Plumbing Calculator free?

BaseCalc Plumbing Calculator is free to download, with in-app purchases available.

### Is Flowbox free?

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

### Do BaseCalc Plumbing Calculator or Flowbox have ads?

Neither BaseCalc Plumbing Calculator nor Flowbox shows ads.

### Which is updated more often, BaseCalc Plumbing Calculator or Flowbox?

BaseCalc Plumbing Calculator ships an update every 2 months, and Flowbox every 2 months. Most recently, BaseCalc Plumbing Calculator was updated on October 31, 2026 and Flowbox on November 6, 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.*