Comparison

GroSens Smartbox vs Sentron

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

Head to head
About

GroSens Smartbox

Monitor and optimize your growing environment with real-time data on substrate water content, EC, and temperature. Customize irrigation strategies with alerts to maintain precise control over your cultivation. Achieve precision growing with ease from any device.

Highlights
  • Real-time substrate water content monitoring
  • EC and temperature tracking
  • Customizable irrigation strategies
  • Alerts for target values
  • Precision growing insights
  • Cross-device accessibility
Features
Read full description

e-Gro is Grodan mobile app that provides access to your GroSens system, whenever you want and wherever you may be. It is accessible from every possible device, desk top, smartphone or tablet. e-Gro provides real-time insights into substrate water content, EC and temperature. It provides users with the opportunity to customize & optimize their own irrigation strategies with alerts set around measured target values.In this way you always remain in control. Precision Growing has never been so easy!

About

Sentron

Transform your mobile device into a sophisticated pH meter. Connect wirelessly to specialized probes for accurate measurements in various applications. The app guides you through calibration, data logging, and export.

Highlights
  • Wireless pH/EC measurement
  • Bluetooth probe connectivity
  • Step-by-step calibration
  • Data logging and graphing
  • GPS data mapping
  • Automatic temperature compensation
Read full description

Turn your mobile device into a full-featured pH meter by downloading this free Analytical Sensors app. Connect your device to one or more non-glass Sentron pH probes with Bluetooth Low Energy technology. Step-by-step instructions included. The app is intuitive and guides you through the complete process of setting configurations, calibrating, acquiring, storing and exporting all measurement data. Monitoring pH was never that easy! SENTRON EUROPE BV Sentron has developed a comprehensive line of wireless high-quality probes for glass-free pH measurements. Sentron’s ISFET pH sensor technology provides accurate and reliable pH measurements for various applications. All pH probes include a replaceable, interchangeable sensor part for extra durability. It is wirelessly connected via Bluetooth to our Sentron app. Interested? Purchase your pH probe of interest simply at our web shop at www.sentron.nl/shop . For your convenience we offer carry cases with a buffer set and predrill stick. This predrill stick can be used to prepare pilot holes in dry soils. The carry case offers convenient protection for your probes. pH AS A CRITICAL PARAMETER pH is a critical parameter in many areas. Examples include agriculture, horticulture, environment, laboratory applications and inline food processes for beer, wine, meat, fish, or cheese. SENTRON’S ISFET pH SENSOR PROBE * Wireless * Glass-free * Robust * Dry storage SENTRON GLASS-FREE pH PROBES Thanks to comprehensive ISFET pH sensor technology, Sentron offers glass-free wireless pH probes. The probes are used for accurate and reliable pH measurements for demanding applications. Multiple Sentron probes can be connected simultaneously. Functions include calibration (1-, 2-, 3- and 5-point calibration), sample measurement, data logging, graph plotting and data sharing. Measurement of pH and temperature starts as soon as the probe is connected to the mobile device. A notification signals when a probe needs a new calibration. The measurement can be displayed as tabulated data or a graph. ADDITIONAL FEATURES * Display of the probe’s condition, name, reading stability and battery life * Both automatic customizable and manual data logging * Automatic temperature compensation (ATC) * User-definable alarm thresholds for pH and temperature * Automatic recognition of previously connected probes and calibration data stored on probes * GPS mapping of your pH data * Advanced mode option for expert users WIRELESS The Sentron probe’s Bluetooth Low Energy technology offers many advantages in wireless measurement convenience. Each probe can be used up to 50 meters (150 feet) from the mobile device. The Sentron probe and app are ideal for professionals and private indiiduals that need accurate wireless measurements in the laboratory, industry halls, outdoors, etc. Sentron probes are compatible with devices with Bluetooth 5.0 or higher. DEMO PROBES AVAILABLE Would you like to experience our app before buying our product? That’s possible! Download the app and add the virtual demo probe in the app. Experience the convenience of the app yourself. COMING SOON: MULTIPARAMETER PROBE The current pH probe portfolio will be extended with probes for EC (Electrical Conductivity) and ORP (Oxidation Reduction Potential). Imagine: alle these parameters in one and the same probe! Follow us at www.sentron.nl for any related news.

Screenshots

GroSens Smartbox2 screens
Sentron4 screens

Verdict

The call

The clearest difference is update cadence: Sentron at every 5 weeks against GroSens Smartbox's every 3 months. GroSens Smartbox's advantage is iOS requirement (13.0 vs 15.0). On price, rating, ratings volume and ads 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

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

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 3.0 for GroSens Smartbox against 3.0 for Sentron. Both are backed by a comparable volume of ratings — 2 and 2 respectively.

UpkeepUpdate frequency

GroSens Smartbox ships an update every 3 months, Sentron every 5 weeks. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

Scorecard2 real differences · 7 level
GroSens Smartbox versus Sentron: the parameters behind the verdict, then further details
ParameterGroSens SmartboxSentron
PriceFreeFree
Rating3.0 (2 ratings)3.0 (2 ratings)
Number of ratings22
Update frequencyEvery 3 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size21 MB94 MB
Age rating4+4+
DeveloperRockwool International A/SSentron Europe B.V.

Customer experience

GroSens Smartbox

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%

Sentron

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

GroSens Smartbox

No in-app purchases

None

Sentron

No in-app purchases

Questions

Is GroSens Smartbox free?
GroSens Smartbox is free to download, with no in-app purchases.
Is Sentron free?
Sentron is free to download, with no in-app purchases.
Which has better reviews, GroSens Smartbox or Sentron?
GroSens Smartbox and Sentron are both rated 3.0 out of 5 on the App Store, from 2 and 2 ratings respectively.
Do GroSens Smartbox or Sentron have ads?
Neither GroSens Smartbox nor Sentron shows ads.
Which is updated more often, GroSens Smartbox or Sentron?
GroSens Smartbox ships an update every 3 months, and Sentron every 5 weeks. Most recently, GroSens Smartbox was updated on November 2, 2026 and Sentron on November 3, 2026.

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