BT Shutter Kun vs TC
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BT Shutter Kun
This app connects via Bluetooth to a specific underwater camera housing, allowing users to control photo and video recording while diving. It's designed for underwater enthusiasts to capture their aquatic experiences.
- Bluetooth connectivity
- Underwater photo capture
- Underwater video recording
- Control camera functions
- Record aquatic experiences
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BT Shutter Kun是由海蛙科技推出针对自身潜水专用先相机防水壳配套的控制app，通过蓝牙与app连接，不管您身处江河或者大海，如果您是一位潜水爱好者，您都可以用它的水下拍照、水下录像的功能来记录您水下最美的一刻！
TC
This utility app provides quick and accurate conversions between resistance, potential, and temperature for various thermocouples and RTDs. It supports offline use, temperature recording with export, and offers an intuitive interface for field technicians and engineers.
- Thermocouple and RTD conversion
- Supports multiple sensor types
- Offline functionality
- Temperature recording and charting
- Export data to Excel
- Intuitive user interface
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This software is a user-friendly, efficient, and comprehensive tool designed for field technicians, engineers, and programmers. It allows for quick and easy conversion between resistance potential and temperature, suitable for various common temperature sensors. This application simplifies the temperature measurement process, providing a practical solution for professionals. Data support: Supports thermocouple types B, E, J, K, N, R, S, T, C, D, G with all voltages measured in millivolts (mV). The conversion formulas used are derived from NIST thermocouple tables and coefficients. Supports bi-directional query for PT1000, PT100, PT500, PT800, PT10, CU50, CU100, Ni100, Ni120, Ni1000 RTDs (ITS-90). Temperature recording: Supports temperature recording and temperature curve display, with one-click export of records and charts to Excel, facilitating on-site data entry and analysis. Fast and accurate: Instantly obtain the temperature coefficients and performance curves you need. Offline availability: Can be queried in field environments without network access. Intuitive interface: Clean design, easy to operate. Regular updates: Always maintains the latest industry standards. Whether you're an industrial automation engineer, process control expert, factory instrument engineer, or a student of temperature measurement, TC-RTD is an indispensable assistant for you.
Screenshots
Verdict
The clearest difference is review sentiment: TC at 100% against BT Shutter Kun's 6%. TC also leads on rating (5.0 vs 2.0) and update cadence (every 3 months vs every 6 months). BT Shutter Kun's advantage is price (Free vs $1.99). On ratings volume, ads, in-app purchases and device support 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
BT Shutter Kun is free to download; TC costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
TC holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews point the same way: 6% of BT Shutter Kun's written reviews are positive against 100% of TC's.
BT Shutter Kun ships an update every 6 months, TC every 3 months. The most recent releases landed on October 4, 2026 and October 2, 2026 respectively.
| Parameter | BT Shutter Kun | TC |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 2.0 (2 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 5.6% of reviews | 100.0% of reviews — better |
| Number of ratings | 2 — better | 1 |
| Update frequency | Every 6 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 26 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Shenzhen Kaichengyi Technology Co.,Ltd. | 立娜 王 |
Customer experience
BT Shutter Kun
TC
In-app purchases
BT Shutter Kun
No in-app purchases
TC
No in-app purchases
