Comparison

Schmidt Rebound Hammer vs Bob Environmental

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Schmidt Rebound Hammer

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
Read full description

The technology of the legendary, original rebound hammers for concrete and rock strength and uniformity assessment, Original Schmidt, Silver Schmidt and Rock Schmidt, is now even more flexible, and interconnected. The Original Schmidt OS8000, the best in class Silver Schmidt OS8200 and the Rock Schmidt RS8000 rebound hammers can be used as stand-alone digital hammers, in combination with the Bluetooth printer or with this great app that delivers rich functionality to make concrete and rock testing a breeze: • Automated calculation of the rebound number according to major standards • Ability to add custom curves for higher precision • Verification tracking in line with requirements and standards • Logbook functionality for capturing additional information for reporting purposes • PDF report generation in just a few taps • Cloud-based sharing space for easier collaboration • Cloud synchronization with the screeningeagle.com workspace platform Schmidt rebound hammers by Proceq, the inventor. For faster and more precise concrete and rock testing. Download the free app now and explore the state of the art of concrete and rock testing with mechanical and optical technologies.

About

Bob Environmental

Features
Currently charting
Read full description

Bob is the app that turns your Apple Watch and your iPhone into a smart sensor and you into a scientist. Smartwatches have 6 of the same sensors that scientists use to study the ocean and the earth. Take, save, and share environmental data with anyone, anywhere, anytime. ~~~ Data collection simplified. ~~~ Tap a button to start logging data. Done logging? Tap again. ~~~ Geotagging? ~~~ L1 and L5 GPS, GLONASS, Galileo, QZSS, and BeiDou works seamlessly with local Wi-Fi and Bluetooth networks to provide location and altitude at accuracies up to 10 meters. ~~~ Moving three-dimensionally through space? ~~~ The accelerometer, gyroscope, and compass tracks watch motion. ~~~ Air pressure? ~~~ There's a barometer for that. ~~~ Are you in water? ~~~ Apple Watch Ultra, Series 11 or Series 10 also measure water temperature and depth to 0.1 C and 0.05 meters. ~~~ Set it and forget it! ~~~ Automatic water lock for uninterrupted data collection. ~~~ The more the merrier!~~~ Record data on your watch and your phone at the same time. ~~~ Automatic archiving ~~~ Tap stop and your data is automatically saved to iCloud. ~~~ Explore your data. ~~~ The watch logbook has a quick summary. For more details, graphically explore your data on the phone app. ~~~ Share like a text or photo. ~~~ Instead of sending a cat pic to Nana and PopPop, send them your latest data. Converted internally to a human and machine readable JSON, they will also be impressed by the comprehensive metadata. ~~~ Hit us with your feedback ~~~ If you find a bug or have an idea for a cool feature, reach out by emailing lifesaver@tiniscientific.com _______________________\\ Tini Scientific is on a mission to provide ocean data to anyone, anywhere, anytime. Armed decades of expertise in oceanography, technology, and pop culture, Tini is revolutionizing ocean observations by developing a truly scalable network that returns timely, relevant, and usable ocean data.

Screenshots

Schmidt Rebound Hammer4 screens
Bob Environmental4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard4 real differences · 7 level
Schmidt Rebound Hammer versus Bob Environmental: the parameters behind the verdict, then further details
ParameterSchmidt Rebound HammerBob Environmental
PriceFree — better$0.99
Rating5.0 (2 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationAd-supported—
Best chart rank—#176 — better
DevicesiPhone, iPad, iPod — betteriPhone, Apple Watch
Requires iOS15.0 — better17.0
Further details — not scored
Size377 MB3 MB
Age rating4+4+
DeveloperScreening Eagle TechnologiesKim Martini

In-app purchases

None

Schmidt Rebound Hammer

No in-app purchases

None

Bob Environmental

No in-app purchases

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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