B.R.A.IN. vs FieldForm
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
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.
FieldForm
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Use FieldForm to conduct location-bound measurements in the field, store the values on your phone, and share the measurements with other people. To use FieldForm for a set of locations with multiple people simultaneously, the use of an FTP-server is recommended. FieldForm is the successor to FieldLogger. It is build platform-independent in Flutter. The new structure makes it easier to add functionality or fix bugs. FieldForm is now completely open source. For more information, see the Github-page. For FieldLogger-users: there are some important changes between the files used or generated by FieldLogger and FieldForm. The file with location-data is a json file (instead of a csv in FieldLogger), to better incorporate the nested structure of the location-data. The measurement-data still consists of csv-files. The date-format however is changed to yyyy-mm-dd (instead of dd-mm-yyyy in FieldLogger), to minimise potential errors.
Screenshots
Verdict
B.R.A.IN. and FieldForm are too close to call on the numbers: across 6 compared parameters β price, update cadence, ads and in-app purchases among them β neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.
| Parameter | B.R.A.IN. | FieldForm |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 14.0 β better |
| Further details β not scored | ||
| Size | 78 MB | 39 MB |
| Age rating | 4+ | 4+ |
| Developer | SISGEO S.r.l | Artesia |
In-app purchases
B.R.A.IN.
No in-app purchases
FieldForm
No in-app purchases









