Bad Elf Flex vs CTT Mobile
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.
CTT Mobile
Monitor real-time telemetry from your CTT devices. Adjust device duty cycles and connect to Bluetooth-enabled products like the Sidekick and Node Version 3.
- View latest telemetry data
- Assign device duty cycle changes
- Connect to Bluetooth enabled CTT products
- Monitor Sidekick and Node Version 3
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CTT Mobile allows you to view the latest telemetry data from your CTT devices on your mobile device. In addition you can use CTT Mobile to assign device duty cycle changes and connect to Bluetooth enabled CTT products such as the Sidekick and Node Version 3.
Screenshots
Verdict
The clearest difference is review sentiment: CTT Mobile at 100% against Bad Elf Flex's 40%. CTT Mobile also leads on rating (5.0 vs 3.6) and iOS requirement (13.0 vs 15.5). On price, ratings volume, update cadence 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
CTT Mobile holds the better App Store score, 5.0 against 3.6. Both are backed by a comparable volume of ratings — 14 and 7 respectively. Written reviews point the same way: 40% of Bad Elf Flex's written reviews are positive against 100% of CTT Mobile's.
Both ship on a similar rhythm, roughly every 2 months. Both last shipped on November 3, 2026.
| Parameter | Bad Elf Flex | CTT Mobile |
|---|---|---|
| Price | Free | Free |
| Rating | 3.6 (14 ratings) | 5.0 (7 ratings) — better |
| Positive reviews | 40.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 14 — better | 7 |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.5 | 13.0 — better |
| Further details — not scored | ||
| Size | 33 MB | 59 MB |
| Age rating | 4+ | 4+ |
| Developer | Bad Elf, LLC. | Cellular Tracking Technologies |
Customer experience
Bad Elf Flex
CTT Mobile
In-app purchases
Bad Elf Flex
No in-app purchases
CTT Mobile
No in-app purchases
