# Curve vs GridWeave

The clearest difference is review sentiment: Curve at 100% against GridWeave's 0%. GridWeave's advantage is price (Free vs $0.99) and in-app purchases (none vs 1). On update cadence, ads, device support and iOS requirement there is nothing between them.

GridWeave is free to download; Curve costs $0.99 up front. Curve sells 1 one-off in-app purchase. GridWeave asks for nothing beyond the download.

Curve ships an update every 42 months, GridWeave every 28 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Curve | GridWeave |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/curve-fit/id1450077815/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 42 months | **Every 28 months** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 1 MB | 17 MB |
| Requires iOS | 15.6 | **14.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 9+ |
| Developer | [Bjarne Berge](https://appshunter.io/developer/1209858941) | [凌峰 孟](https://appshunter.io/developer/1454891586) |

## What reviewers say

### Curve

[App page](https://appshunter.io/ios/app/curve-fit/id1450077815)

This app performs regression analysis using the method of least squares to fit various equations to your data. The free version offers straight-line fitting, with additional equation types available via an in-app purchase. It's designed for users needing to analyze and model data sets.

**Highlights:** Least squares regression analysis, Multiple equation fitting options, Data set analysis, Free straight-line fitting, In-app purchase for advanced equations

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Curve-Fit | $2.99 | one-time |


### GridWeave

[App page](https://appshunter.io/ios/app/gridweave/id1569393152)

Create and edit grid-based pixel patterns for crafts like beading and embroidery. Transform images into printable, makeable designs with precise control over each grid cell. All processing is done locally on your device.

**Highlights:** Precise grid-based design, Convert images to craftable patterns, Multiple grid styles, Export print-ready PDF patterns, Fully local processing, Supports beading and embroidery

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Curve free?

Curve costs $0.99, and also offers in-app purchases.

### Is GridWeave free?

GridWeave is free to download, with no in-app purchases.

### Do Curve or GridWeave have ads?

Neither Curve nor GridWeave shows ads.

### Which is updated more often, Curve or GridWeave?

Curve ships an update every 42 months, and GridWeave every 28 months. Most recently, Curve was updated on November 2, 2026 and GridWeave on November 3, 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.*