# Rafter Length Calculator vs StudPlan

The clearest difference is update cadence: StudPlan at every 3 weeks against Rafter Length Calculator's every 59 months. Rafter Length Calculator's advantage is device support (3 vs 1) and iOS requirement (14.2 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Rafter Length Calculator sells 3 in-app purchases, starting at $0.99 per 7 days and StudPlan sells 4 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Rafter Length Calculator ships an update every 59 months, StudPlan every 3 weeks. The most recent releases landed on October 3, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Rafter Length Calculator | StudPlan |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (6 ratings)](https://appshunter.io/ios/app/rafter-length-calculator/id1578160704/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 59 months | **Every 3 weeks** |
| Monetization | Paid | — |
| Size | 2 MB | 4 MB |
| Requires iOS | **14.2** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Anna Filobok](https://appshunter.io/developer/1613515832) | [ZHENGQIAO JIANG](https://appshunter.io/developer/1892168889) |

## What reviewers say

### Rafter Length Calculator

[App page](https://appshunter.io/ios/app/rafter-length-calculator/id1578160704)

This tool quickly calculates rafter lengths based on rise and run. It supports conversions between imperial and metric units in real-time, offering results in meters, centimeters, inches, and feet.

**Highlights:** Real-time rafter length calculation, Imperial and metric unit conversion, Supports rise and run in meters, Supports rise and run in centimeters, Supports rise and run in inches, Supports rise and run in feet

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Access | $0.99 | per 7 days |
| Premium Access | $1.99 | per month |
| Premium Access | $5.99 | per year |


### StudPlan

[App page](https://appshunter.io/ios/app/studplan-wall-framing-layout/id6769339554)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $1.99 | per 7 days |
| Monthly | $4.99 | per month |
| Yearly | $29.99 | per year |
| Lifetime | $79.99 | one-time |


## Frequently asked questions

### Is Rafter Length Calculator free?

Rafter Length Calculator is free to download, with in-app purchases available.

### Is StudPlan free?

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

### Do Rafter Length Calculator or StudPlan have ads?

Neither Rafter Length Calculator nor StudPlan shows ads.

### Which is updated more often, Rafter Length Calculator or StudPlan?

Rafter Length Calculator ships an update every 59 months, and StudPlan every 3 weeks. Most recently, Rafter Length Calculator was updated on October 3, 2026 and StudPlan on October 21, 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.*