# Thermview+ vs Optris calculator

Thermview+ and Optris calculator are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Thermview+ ships an update monthly, Optris calculator every 2 months. The most recent releases landed on June 10, 2026 and December 3, 2025 respectively.

## The numbers

| Metric | Thermview+ | Optris calculator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Size | 12 MB | 31 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Shenzhen Everbest Machinery Industry Co.,Ltd](https://appshunter.io/developer/564470332) | [Optris GmbH](https://appshunter.io/developer/1619077973) |

## What reviewers say

### Thermview+

[App page](https://appshunter.io/ios/app/thermview-plus/id1329889385)

**Features:** macOS Compatibility

**In-app purchases:** none


### Optris calculator

[App page](https://appshunter.io/ios/app/optris-calculator/id1619077971)

**In-app purchases:** none


## Frequently asked questions

### Is Thermview+ free?

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

### Is Optris calculator free?

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

### Do Thermview+ or Optris calculator have ads?

Neither Thermview+ nor Optris calculator shows ads.

### Which is updated more often, Thermview+ or Optris calculator?

Thermview+ ships an update monthly, and Optris calculator every 2 months. Most recently, Thermview+ was updated on June 10, 2026 and Optris calculator on December 3, 2025.

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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.*