# Curvature vs pippyg

The clearest difference is price: pippyg at Free against Curvature's $1.99. pippyg also leads on update cadence (every 2 months vs every 5 months) and iOS requirement (15.6 vs 17.6). Curvature's advantage is rating (5.0 vs 3.7). On ratings volume, ads, in-app purchases and device support there is nothing between them.

pippyg is free to download; Curvature costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Curvature holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 2 and 3 respectively.

Curvature ships an update every 5 months, pippyg every 2 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Curvature | pippyg |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/curvature/id1441050109/reviews)** | [3.7 (3 ratings)](https://appshunter.io/ios/app/pippyg/id1664120907/reviews) |
| Number of ratings | 2 | **3** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 months** |
| Monetization | Paid | **Free** |
| Size | 116 MB | 3 MB |
| Requires iOS | 17.6 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Steven Wilkinson](https://appshunter.io/developer/1441050108) | [Phil Atkin](https://appshunter.io/developer/1751268739) |

## What reviewers say

### Curvature

[App page](https://appshunter.io/ios/app/curvature/id1441050109)

This app provides advanced tools for calculating and visualizing earth measurements, including curvature, horizon distance, and drop distance. It features a redesigned interface with precision mapping, data persistence, and a knowledge hub with research resources.

**Highlights:** Advanced Earth Calculators, Graphic Result Visualization, Precision Mapping Tools, Data Persistence with SwiftData, Expanded PDF Library, Universal Unit Converter, Save & Export Calculations

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

**In-app purchases:** none


### pippyg

[App page](https://appshunter.io/ios/app/pippyg/id1664120907)

Configure your bat recording devices remotely using your phone. Set device IDs, wake/sleep times, and location data. The app uses your phone's microphone to transmit settings to the recorder.

**Highlights:** Configure real-time clock, Set device ID, Define deployment latitude and longitude, Set wake and sleep times, Configure PIPPYG bat recorder, Configure π•pistrelle bat detector

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

**In-app purchases:** none


## Frequently asked questions

### Is Curvature free?

Curvature costs $1.99, with no in-app purchases.

### Is pippyg free?

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

### Which has better reviews, Curvature or pippyg?

Curvature is rated higher. Curvature averages 5.0 out of 5 from 2 ratings, while pippyg averages 3.7 from 3 ratings.

### Do Curvature or pippyg have ads?

Neither Curvature nor pippyg shows ads.

### Which is updated more often, Curvature or pippyg?

Curvature ships an update every 5 months, and pippyg every 2 months. Most recently, Curvature was updated on November 6, 2026 and pippyg 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.*