# BuildBook vs Hammr

The clearest difference is rating: BuildBook at 4.1 against Hammr's 3.3. BuildBook also leads on iOS requirement (14.0 vs 16.0). On price, ratings volume, update cadence and ads there is nothing between them.

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

BuildBook holds the better App Store score, 4.1 against 3.3. Both are backed by a comparable volume of ratings — 16 and 7 respectively.

BuildBook ships an update every 2 weeks, Hammr weekly. The most recent releases landed on September 12, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | BuildBook | Hammr |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (16 ratings)](https://appshunter.io/ios/app/buildbook/id1545031122/reviews)** | [3.3 (7 ratings)](https://appshunter.io/ios/app/hammr/id6444051664/reviews) |
| Number of ratings | **16** | 7 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | Free | Free |
| Size | 34 MB | 54 MB |
| Requires iOS | **14.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [BuildBook Inc.](https://appshunter.io/developer/1451969135) | [Hammr Inc.](https://appshunter.io/developer/1491692476) |

## What reviewers say

### BuildBook

[App page](https://appshunter.io/ios/app/buildbook/id1545031122)

This app streamlines residential construction projects for builders, remodelers, and designers. It offers features like project management, scheduling with Gantt charts, team communication, budgeting, and a client dashboard to enhance client satisfaction.

**Highlights:** Unlimited projects, Lightning-fast scheduling (Gantt charts), Team and client chat, Budget management, Change order tracking, Client dashboard

**In-app purchases:** none


### Hammr

[App page](https://appshunter.io/ios/app/hammr/id6444051664)

This mobile application simplifies time tracking for construction professionals. It offers automated reminders, offline functionality, and geofencing to ensure accurate clock-ins. Foremen can manage crew hours in real-time, generating detailed reports for payroll and job costing.

**Highlights:** Automated reminders, Offline functionality, Geofencing for clock-ins, Real-time crew hour management, Payroll and job cost reporting, Timesheet export

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

**In-app purchases:** none


## Frequently asked questions

### Is BuildBook free?

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

### Is Hammr free?

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

### Which has better reviews, BuildBook or Hammr?

BuildBook is rated higher. BuildBook averages 4.1 out of 5 from 16 ratings, while Hammr averages 3.3 from 7 ratings.

### Do BuildBook or Hammr have ads?

Neither BuildBook nor Hammr shows ads.

### Which is updated more often, BuildBook or Hammr?

BuildBook ships an update every 2 weeks, and Hammr weekly. Most recently, BuildBook was updated on September 12, 2026 and Hammr on September 14, 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.*