TEC Auto Test vs C3 Data
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TEC Auto Test
This app automates building envelope and duct system airtightness testing by wirelessly connecting to specific pressure gauges. It collects test data, calculates results, and generates PDF reports, with features like wind assistance for improved accuracy.
- Automated building envelope and duct system testing
- Wireless connection to DG-1000 and DG-700 gauges
- PDF report generation and export
- Geotagging and time stamping of projects
- Wind Assistant for improved test accuracy
- Support for multiple airtightness test standards
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TEC Auto Test is an automated building envelope and duct system airtightness testing app for mobile devices. The TEC Auto Test app allows the user to wirelessly connect with a DG-1000 or DG-700 pressure gauge to conduct an automated airtightness test of a building or duct system. The app will collect and store the required test data from the connected gauge (and flow device), and along with manually entered building and customer information, calculate and display test results in a PDF report. Project files can be geotagged using location services on your mobile device. The app creates PDF test reports that can be viewed and exported using email or cloud sharing apps installed on your mobile device (e.g. Google Drive, Dropbox). Users can also export Project files that contain all test and building data within the Project. Exported Project files are in a XML file format. The app supports multiple airflow units including cfm, m3/h and l/s. The Wind Assistant feature can detect windy weather conditions and automatically make adjustments to the envelope test settings to improve test accuracy and repeatability. The Wind Assistant has multiple settings and is user configurable. TEC Auto Test is designed to be used exclusively with testing equipment manufactured by The Energy Conservatory (TEC). The airtightness test standards supported by this version of the app includes seven building envelope standards: ASTM E779 Multi-Point standard, RESNET 380 Multi-Point standard, RESNET 380 One-Point standard, two variations of the ISO 9972 Multi-Point standard, and two variations of the CGSB 149.10 Multi-Point standard. In addition, the app includes the RESNET 380 Total Duct Leakage and Outside Duct Leakage test standards. Features: • Wireless communication with a DG-1000 gauge using either Bluetooth or WiFi. • Wireless WiFi communication with a DG-700 gauge along with a WiFi Link adapter. • Automated fan control and data collection reduces operator error and ensures that tests are conducted the same way every time. • Auto Test provides quality assurance by ensuring that tests are performed in accordance with test standards and that test data (i.e. pressure and flow readings) is collected directly from your TEC gauge and cannot be altered. • The Wind Assistant feature can detect windy weather conditions and automatically make adjustments to the envelope test settings to improve test accuracy and repeatability. • Project files can be geotagged and time stamped to verify when and where the test was conducted. • Supports both building and duct system airtightness tests, and metric and non-metric units. • Calculates and displays test results in a PDF report format that can be exported using cloud sharing apps on your mobile device. • Complete Project files (containing all test and building data) can also be exported. Exported Project files are in an XML file format. • Contains multiple default test protocols that define the type of tests and code compliance/test settings that the app uses when conducting a test. Protocols can be edited, deleted, and new protocols created. • Project and test files can be easily copied to speed up data entry for large production applications.
C3 Data
This application helps pyrometry laboratories and heat treat plants track compliance with industry standards. It provides instant visual feedback on test results against specified criteria, supporting various data collection needs for furnaces.
- Nadcap and CQI-9 compliance tracking
- Calibration, SAT, and TUS data collection
- Instant pass/fail visual indicators
- Test and instrument management
- On- and offline operation
- Zebra Bluetooth printer support
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eCapture provides pyrometry laboratories and heat treat plants with the tools needed to track Nadcap and/or CQI-9 compliance. With current support for capturing Calibration, System Accuracy Test, and Temperature Uniformity Survey results, the app will give instant visual indications of pass/fail criteria based on the specifications applicable to the furnace under test. Features include: - Test list, shows upcoming tests with location, due date, and test type - Standard list, shows all test instruments - Sensor list, shows all sensors - Calibration data collection - SAT data collection form - Alternate SAT Support - Support for Zebra Bluetooth portable label printers - On- and Off-line operation - Furnace Compliance Dashboard integration
Screenshots
Verdict
The clearest difference is update cadence: C3 Data at every 5 weeks against TEC Auto Test's every 3 months. TEC Auto Test's advantage is iOS requirement (12.0 vs 15.6). 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.5 for TEC Auto Test against 4.6 for C3 Data. Both are backed by a comparable volume of ratings — 4 and 8 respectively.
TEC Auto Test ships an update every 3 months, C3 Data every 5 weeks. The most recent releases landed on June 1, 2026 and August 23, 2026 respectively.
| Parameter | TEC Auto Test | C3 Data |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (4 ratings) | 4.6 (8 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 4 | 8 — better |
| Update frequency | Every 3 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 18 MB | 40 MB |
| Age rating | 4+ | 4+ |
| Developer | The Energy Conservatory | C3 Data |
Customer experience
TEC Auto Test
C3 Data
In-app purchases
TEC Auto Test
No in-app purchases
C3 Data
No in-app purchases








