Bad Elf Flex vs StraboField
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Bad Elf Flex
This utility app enhances the functionality of Bad Elf Flex and Flex Mini GNSS receivers. It allows users to monitor hardware health, adjust settings, and update firmware. For the Flex model, it also enables the purchase and application of tokens for advanced features and correction sources like SBAS and RTK.
- Monitor GNSS receiver health
- Change hardware settings
- Perform firmware updates
- Purchase and load Flex Tokens
- Enable hardware-based features
- Access correction sources
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This is the free companion utility app for the flexible, intuitive, and affordable Bad Elf Flex and Flex Mini GNSS receivers. Designed for GIS and survey professionals, the Bad Elf Flex and Flex Mini connect to your iPhone or iPad via Bluetooth and provide high-accuracy location data to ANY and ALL field data collection apps in your workflow. This app allows you to view the health of the Flex and Flex Mini hardware, change settings, and perform firmware updates. For the Bad Elf Flex, the app also supports purchasing and loading Flex Tokens into the hardware for enabling hardware-based features and correction sources. Several correction sources are supported including SBAS, RTK via NTRIP, and Atlas (L-band) satellite corrections. Visit https://bad-elf.com/ to learn more about the Bad Elf Flex and Flex Mini GNSS receivers. NOTES: * This app requires a Bad Elf Flex or Flex Mini to operate. * Our "Bad Elf GPS" companion app supports our legacy mapping-grade receivers: Bad Elf GPS Pro, GPS Pro+, Surveyor, and GPS for Lightning dongle. * Continued use of the GPS running in the background can dramatically decrease battery life.
StraboField
This mobile application helps geologists record field observations, capture data like photos and sketches, and create geologic maps. It supports various geological subdisciplines and allows for offline use with data syncing capabilities.
- Record field data with photos, sketches, and notes
- Collect georeferenced orientation and spatial data
- Use custom or built-in basemaps offline
- Create multi-scale observations with nested Spots
- Organize and back up data locally or to StraboSpot.org
- Fully functional offline for remote fieldwork
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StraboField is a powerful, all-in-one mobile app designed to streamline your geological fieldwork. Record observations, capture photos and sketches, collect orientation data, create geologic maps and stratigraphic sections — all from a single, map-centered platform. Easily collect spatially referenced data using point, line, or polygon-based Spots. Work across multiple scales using nested Spots and high-resolution image basemaps. Designed by geologists, for geologists, StraboField supports workflows across subdisciplines including structural geology, sedimentology, petrology, volcanology, and geomorphology. ** Key Features: ** * Capture field data with photos, sketches, and notes * Collect georeferenced orientation and spatial data * Use custom or built-in basemaps offline * Create multi-scale observations with nested Spots * Organize and back up data locally or to StraboSpot.org * StraboField is fully functional offline, making it ideal for remote fieldwork. Once online, your data can be synced to the StraboSpot digital data system at StraboSpot.org — an open- source platform supported by the National Science Foundation.
Screenshots
Verdict
The clearest difference is rating: StraboField at 4.5 against Bad Elf Flex's 3.6. StraboField also leads on update cadence (every 2 weeks vs every 2 months) and review sentiment (50% vs 40%). On price, ratings volume, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
StraboField holds the better App Store score, 4.5 against 3.6. Both are backed by a comparable volume of ratings — 14 and 19 respectively. Written reviews point the same way: 40% of Bad Elf Flex's written reviews are positive against 50% of StraboField's.
Bad Elf Flex ships an update every 2 months, StraboField every 2 weeks. The most recent releases landed on September 26, 2026 and September 18, 2026 respectively.
| Parameter | Bad Elf Flex | StraboField |
|---|---|---|
| Price | Free | Free |
| Rating | 3.6 (14 ratings) | 4.5 (19 ratings) — better |
| Positive reviews | 40.0% of reviews | 50.0% of reviews — better |
| Number of ratings | 14 | 19 — better |
| Update frequency | Every 2 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.5 — better | 15.6 |
| Further details — not scored | ||
| Size | 33 MB | 87 MB |
| Age rating | 4+ | 4+ |
| Developer | Bad Elf, LLC. | The University of Kansas |
Customer experience
Bad Elf Flex
StraboField
In-app purchases
Bad Elf Flex
No in-app purchases
StraboField
No in-app purchases









