# Temtop vs OxCalc

The clearest difference is update cadence: Temtop at every 5 weeks against OxCalc's every 5 months. Temtop also leads on iOS requirement (15 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Temtop ships an update every 5 weeks, OxCalc every 5 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Temtop | OxCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.9 (82 ratings)](https://appshunter.io/ios/app/temtop/id1439409326/reviews)** | — |
| Number of ratings | **82** | — |
| Positive reviews | 32.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 5 months |
| Monetization | Free | — |
| Size | 183 MB | 36 MB |
| Requires iOS | **15** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Elitech Technology,Inc.](https://appshunter.io/developer/1455057713) | [Bob Reijnders](https://appshunter.io/developer/1832004304) |

## What reviewers say

### Temtop

[App page](https://appshunter.io/ios/app/temtop/id1439409326)

This app detects formaldehyde, PM2.5, and TVOC using advanced sensors. It provides accurate and reliable environmental data for your home or workspace.

**Highlights:** Formaldehyde detection, PM2.5 detection, TVOC detection, British Dart electrochemical sensor, US TEMTOP laser particle sensor, Accurate and reliable data

**Features:** Vision Pro support

**In-app purchases:** none


### OxCalc

[App page](https://appshunter.io/ios/app/oxcalc/id6751275226)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Temtop free?

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

### Is OxCalc free?

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

### Do Temtop or OxCalc have ads?

Neither Temtop nor OxCalc shows ads.

### Which is updated more often, Temtop or OxCalc?

Temtop ships an update every 5 weeks, and OxCalc every 5 months. Most recently, Temtop was updated on October 24, 2026 and OxCalc on October 25, 2026.

---

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