# Schmidt Rebound Hammer vs Bob Environmental

The clearest difference is price: Schmidt Rebound Hammer at Free against Bob Environmental's $0.99. Schmidt Rebound Hammer also leads on iOS requirement (15.0 vs 17.0). Bob Environmental's advantage is update cadence (every 2 weeks vs every 2 months) and chart position (#176 vs unranked). On ads, in-app purchases and device support there is nothing between them.

Schmidt Rebound Hammer is free to download; Bob Environmental costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Schmidt Rebound Hammer ships an update every 2 months, Bob Environmental every 2 weeks. The most recent releases landed on October 24, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Schmidt Rebound Hammer | Bob Environmental |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/schmidt-rebound-hammer/id1239435876/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Ad-supported | — |
| Best chart rank | — | **#176** |
| Size | 377 MB | 3 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Screening Eagle Technologies](https://appshunter.io/developer/1515215362) | [Kim Martini](https://appshunter.io/developer/1729267728) |

## What reviewers say

### Schmidt Rebound Hammer

[App page](https://appshunter.io/ios/app/schmidt-rebound-hammer/id1239435876)

This app enhances the functionality of Schmidt rebound hammers for concrete and rock testing. It automates calculations, allows custom curves, tracks verification, and generates PDF reports. Collaborate and share data easily through cloud synchronization.

**Highlights:** Automated rebound number calculation, Custom curve support, Verification tracking, Logbook for reporting, PDF report generation, Cloud-based sharing and synchronization

**In-app purchases:** none


### Bob Environmental

[App page](https://appshunter.io/ios/app/bob-environmental/id6477407938)

**Currently charting:** #176 Top Paid · Utilities (US App Store)

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Schmidt Rebound Hammer free?

Schmidt Rebound Hammer is free to download, with no in-app purchases.

### Is Bob Environmental free?

Bob Environmental costs $0.99, with no in-app purchases.

### Do Schmidt Rebound Hammer or Bob Environmental have ads?

Neither Schmidt Rebound Hammer nor Bob Environmental shows ads.

### Which is updated more often, Schmidt Rebound Hammer or Bob Environmental?

Schmidt Rebound Hammer ships an update every 2 months, and Bob Environmental every 2 weeks. Most recently, Schmidt Rebound Hammer was updated on October 24, 2026 and Bob Environmental on October 18, 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.*