# TC vs 视力启蒙

The clearest difference is price: 视力启蒙 at Free against TC's $1.99. TC's advantage is in-app purchases (none vs 1). On ads, device support and iOS requirement there is nothing between them.

视力启蒙 is free to download; TC costs $1.99 up front. 视力启蒙 sells 1 one-off in-app purchase. TC asks for nothing beyond the download.

## The numbers

| Metric | TC | 视力启蒙 |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/tc-rtd-reference/id6504454500/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Monetization | Paid | — |
| Size | 12 MB | 25 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [立娜 王](https://appshunter.io/developer/1761096632) | [敬 潘](https://appshunter.io/developer/1630712468) |

## What reviewers say

### TC

[App page](https://appshunter.io/ios/app/tc-rtd-reference/id6504454500)

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.

**Highlights:** Thermocouple and RTD conversion, Supports multiple sensor types, Offline functionality, Temperature recording and charting, Export data to Excel, Intuitive user interface

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### 视力启蒙

[App page](https://appshunter.io/ios/app/id6737162932)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Professional | $2.99 | one-time |


## Frequently asked questions

### Is TC free?

TC costs $1.99, with no in-app purchases.

### Is 视力启蒙 free?

视力启蒙 is free to download, with in-app purchases available.

### Do TC or 视力启蒙 have ads?

Neither TC nor 视力启蒙 shows ads.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*