# HeadLight Fieldbook vs pi

The clearest difference is device support: pi at 3 against HeadLight Fieldbook's 1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

HeadLight Fieldbook ships an update every 2 months, pi every 6 weeks. The most recent releases landed on November 11, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | HeadLight Fieldbook | pi |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (24 ratings)](https://appshunter.io/ios/app/headlight-fieldbook/id1239533284/reviews)** | — |
| Number of ratings | **24** | — |
| Positive reviews | 8.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Free | — |
| Size | 128 MB | 73 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Pavia Systems Inc](https://appshunter.io/developer/1079533470) | [Pi Variables, Inc](https://appshunter.io/developer/1488697253) |

## What reviewers say

### HeadLight Fieldbook

[App page](https://appshunter.io/ios/app/headlight-fieldbook/id1239533284)

This app streamlines onsite project information capture for infrastructure projects. It allows teams to quickly record inspection data, generate daily reports, and add multimedia context like photos and videos. Users can easily search archived data and flag areas of concern for immediate notification.

**Highlights:** Real-time data capture and sharing, Built-in daily report generation, Multimedia observation recording, Archived data search functionality, Flagging areas of concern

**In-app purchases:** none


### pi

[App page](https://appshunter.io/ios/app/pi-lit/id1488697254)

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

**In-app purchases:** none


## Frequently asked questions

### Is HeadLight Fieldbook free?

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

### Is pi free?

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

### Do HeadLight Fieldbook or pi have ads?

Neither HeadLight Fieldbook nor pi shows ads.

### Which is updated more often, HeadLight Fieldbook or pi?

HeadLight Fieldbook ships an update every 2 months, and pi every 6 weeks. Most recently, HeadLight Fieldbook was updated on November 11, 2026 and pi on November 7, 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.*