# BlindsBook Drapery Calculator vs Kirsch Ref Guide

The clearest difference is price: Kirsch Ref Guide at Free against BlindsBook Drapery Calculator's $0.99. Kirsch Ref Guide also leads on rating (5.0 vs 4.4) and iOS requirement (10.0 vs 15.0). BlindsBook Drapery Calculator's advantage is update cadence (every 3 weeks vs every 30 months) and ratings volume (7 vs 2). On ads, in-app purchases and device support there is nothing between them.

Kirsch Ref Guide is free to download; BlindsBook Drapery Calculator costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Kirsch Ref Guide holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 7 and 2 respectively.

BlindsBook Drapery Calculator ships an update every 3 weeks, Kirsch Ref Guide every 30 months. The most recent releases landed on October 24, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | BlindsBook Drapery Calculator | Kirsch Ref Guide |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [4.4 (7 ratings)](https://appshunter.io/ios/app/blindsbook-drapery-calculator/id1357933382/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/kirsch-ref-guide/id1477808587/reviews)** |
| Number of ratings | **7** | 2 |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 30 months |
| Monetization | Paid | **Free** |
| Size | 7 MB | 34 MB |
| Requires iOS | 15.0 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BlindsBook Corp](https://appshunter.io/developer/1357933381) | [Kirsch](https://appshunter.io/developer/1469943617) |

## What reviewers say

### BlindsBook Drapery Calculator

[App page](https://appshunter.io/ios/app/blindsbook-drapery-calculator/id1357933382)

This app simplifies curtain yardage calculations for ripple fold and pinch pleated styles. Input your measurements, and it provides an estimate for curtain material needed, aiding in price estimation.

**Highlights:** Ripple fold yardage calculation, Pinch pleated yardage calculation, Curtain material estimation, Price estimation aid

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

**In-app purchases:** none


### Kirsch Ref Guide

[App page](https://appshunter.io/ios/app/kirsch-ref-guide/id1477808587)

Access a fully navigable PDF of product specifications and dealer pricing. Download specific products for offline use, and link to additional documents when online.

**Highlights:** Navigable PDF capture, Product specifications, Dealer pricing, Offline access, Link to additional documents

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is BlindsBook Drapery Calculator free?

BlindsBook Drapery Calculator costs $0.99, with no in-app purchases.

### Is Kirsch Ref Guide free?

Kirsch Ref Guide is free to download, with no in-app purchases.

### Which has better reviews, BlindsBook Drapery Calculator or Kirsch Ref Guide?

Kirsch Ref Guide is rated higher. BlindsBook Drapery Calculator averages 4.4 out of 5 from 7 ratings, while Kirsch Ref Guide averages 5.0 from 2 ratings.

### Do BlindsBook Drapery Calculator or Kirsch Ref Guide have ads?

Neither BlindsBook Drapery Calculator nor Kirsch Ref Guide shows ads.

### Which is updated more often, BlindsBook Drapery Calculator or Kirsch Ref Guide?

BlindsBook Drapery Calculator ships an update every 3 weeks, and Kirsch Ref Guide every 30 months. Most recently, BlindsBook Drapery Calculator was updated on October 24, 2026 and Kirsch Ref Guide on September 26, 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.*