# Stringline vs Craftmetry

The clearest difference is iOS requirement: Stringline at 15.1 against Craftmetry's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Stringline sells 1 one-off in-app purchase and Craftmetry sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Stringline ships an update every 2 weeks, Craftmetry every 11 days. The most recent releases landed on October 1, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Stringline | Craftmetry |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/craftmetry/id6764092071/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 11 days** |
| Monetization | — | Freemium |
| Size | 21 MB | 72 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hector Sahagun](https://appshunter.io/developer/578020588) | [Luke Kazmierowicz](https://appshunter.io/developer/902786228) |

## What reviewers say

### Stringline

[App page](https://appshunter.io/ios/app/stringline-construction-calc/id6760807845)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stringline Pro | $2.99 | one-time |


### Craftmetry

[App page](https://appshunter.io/ios/app/craftmetry/id6764092071)

This app simplifies complex construction calculations for tradespeople. It provides tools for laying out gas and water systems, sizing decks and stairs, and checking voltage drop, turning code charts into easy-to-use field tools.

**Highlights:** Stair layout and stringer diagram, Gas line sizing with visual layout, Water line sizing and estimation, Deck joist and beam sizing, Voltage drop calculation, Residential system design tools

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Build Specs Pro | $9.99 | per month |
| Build Specs Pro | $39.99 | per year |


## Frequently asked questions

### Is Stringline free?

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

### Is Craftmetry free?

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

### Do Stringline or Craftmetry have ads?

Neither Stringline nor Craftmetry shows ads.

### Which is updated more often, Stringline or Craftmetry?

Stringline ships an update every 2 weeks, and Craftmetry every 11 days. Most recently, Stringline was updated on October 1, 2026 and Craftmetry on October 9, 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.*