# Seien vs Phone Temperature Checker

The clearest difference is in-app purchases: Seien at none against Phone Temperature Checker's 2. Seien also leads on iOS requirement (13.2 vs 18.0). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. Phone Temperature Checker sells 2 in-app purchases, starting at $3.99 per 7 days. Seien asks for nothing beyond the download.

## The numbers

| Metric | Seien | Phone Temperature Checker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/phone-temperature-checker/id6804717005/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 3 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 12 MB | 8 MB |
| Requires iOS | **13.2** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [NIPPON INFORMATION CO.,LTD.](https://appshunter.io/developer/396358322) | [Ha Quyen Ho Thi](https://appshunter.io/developer/1886076061) |

## What reviewers say

### Seien

[App page](https://appshunter.io/ios/app/seien/id1530876233)

Record and play back your voice or sounds with simple button presses. This utility app allows you to register custom audio to buttons for easy playback anytime, anywhere. Express yourself and spread cheer with your recorded sounds.

**Highlights:** Easy voice recording, Register sounds to buttons, Instant playback, Record multiple sounds, Express feelings through voice

**Features:** Vision Pro support

**In-app purchases:** none


### Phone Temperature Checker

[App page](https://appshunter.io/ios/app/phone-temperature-checker/id6804717005)

Monitor your device's thermal status and receive one-tap cooling assistance. Optimize performance during gaming, charging, or heavy usage with live system insights and customizable cooling profiles.

**Highlights:** Live system status monitoring, Temperature estimation (°C/°F), CPU, memory, and battery insights, Home Screen widgets, Live Activity / Dynamic Island integration, Multiple cooling profiles, Smart cooling tips

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CPU Cooler Pro Weekly | $3.99 | per 7 days |
| Phone Cooler Pro Yearly | $34.99 | per year |


## Frequently asked questions

### Is Seien free?

Seien is free to download, with no in-app purchases.

### Is Phone Temperature Checker free?

Phone Temperature Checker is free to download, with in-app purchases available.

### Do Seien or Phone Temperature Checker have ads?

Neither Seien nor Phone Temperature Checker 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.*