FieldLogger vs B.R.A.IN.
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
FieldLogger
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Use FieldLogger to conduct location-bound measurements in the field, store the values on your phone in csv-format, and share the measurements by mail or FTP. You can add locations by hand, or import them from a csv-file. You can choose which type of measurements can be performed at each location, before you add new measurements. At the end of the day, you can mail the locally stored locations and measurements to yourself or anybody else. The locations and measurements can also be imported into the app. FieldLogger was initially build to log measurements of groundwater head in wells, but it has grown into a tool to store measurements that are bound to a location, but vary with time. No internet connection is needed to perform the measurements (the google maps background needs an internet connection though). The app is completely free, with no ads. If you find any bugs, please contact us. If you use the app and like it, please rate it. The data is stored in two csv-files: the locations in the file locations.csv and the measurements in the file measurments.csv. The locations.csv has the following propierties: The columns are separated by ';', and the title-row has to include the following fields: NAME, SUBNAME, LAT, LON. If the user wants to use his own input-fields at each location, the field INPUTFIELD needs to be added to the header as well. For each location the input-fields are separated by '|'. At the top of the file these input-fields have to be defined by three column rows, preceeded by the header NAME;INPUTTYPE;HINT. For each location the input-fields are selected by matching the INPUTFIELD in the location list to the NAME string in the input-field list. So the locations.csv-file will look something like this: NAME;INPUTTYPE;HINT Value;number;in m. to top of tube Comment;text;make comment... NAME;SUBNAME;LAT;LON;INPUTFIELD Well1;Well1_1;53.2983;6.6653;Value|Comment Well1;Well1_2;53.2983;6.6653;Value|Comment Well2;Well2_1;53.2988;6.7286;Value|Comment The measurements.csv has the following propierties: A five-column (also seperated by ';') csv-file with the header LOCATION;DATE;TIME;VALUE;TYPE So the meassurements.csv-file will look something like this: LOCATION;DATE;TIME;VALUE;TYPE Well1_1;26-08-2014;07:56:14;5.53;Value Well1_1;26-08-2014;07:56:14;Waterlevel is high;Comment Well1_2;26-08-2014;07:57:11;The well is dry;Comment The development of this iOS app, including the additional features, was made possible by the Dutch Waterboard Peel & Maasvallei.
B.R.A.IN.
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B.R.A.IN (Borehole Readout Array for Inclinometers) is the application for managing SISGEO MEMS inclinometer systems, digital spiral meters and digital T-REX incremental extensometers. With B.R.A.IN app you will always have under control all the main parameters of the measuring system (i.e. probe and reel electronicsβ temperature and humidity). By activating the "alarms" the app will propose you alert messages (i.e. probe calibration expired). New sites and boreholesβ set up is intuitive and permits to add descriptions and additional information useful for data processing (i.e. save latitude and longitude of borehole head using the integrated GPS of your device). During the reading procedure, the app informs you if the reading is stable or not, at which depth is the probe and the checksum value using the conjugated reading (180Β° reverse reading). The data and graphs of the survey could be immediately displayed, saved on the device memory or cloud, or shared i.e. by email. B.R.A.IN app is the best complement for KLION, the software developed by SISGEO for data analysis and for creating reports.
Screenshots
Verdict
The clearest difference is update cadence: FieldLogger at every 3 weeks against B.R.A.IN.'s every 3 months. FieldLogger also leads on iOS requirement (8.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
FieldLogger ships an update every 3 weeks, B.R.A.IN. every 3 months. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.
| Parameter | FieldLogger | B.R.A.IN. |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks β better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 β better | 15.0 |
| Further details β not scored | ||
| Size | 17 MB | 78 MB |
| Age rating | 4+ | 4+ |
| Developer | Artesia | SISGEO S.r.l |
In-app purchases
FieldLogger
No in-app purchases
B.R.A.IN.
No in-app purchases









