# Klingua 2.0 vs VPD Chart

The clearest difference is in-app purchases: Klingua 2.0 at none against VPD Chart's 2. Klingua 2.0 also leads on rating (5.0 vs 4.5) and review sentiment (100% vs 74%). VPD Chart's advantage is update cadence (every 3 weeks vs every 9 months) and ratings volume (31 vs 4). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. VPD Chart sells 2 in-app purchases, starting at $3.99 per month. Klingua 2.0 asks for nothing beyond the download.

Klingua 2.0 holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: VPD Chart has 31 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 100% of Klingua 2.0's written reviews are positive against 74% of VPD Chart's.

Klingua 2.0 ships an update every 9 months, VPD Chart every 3 weeks. The most recent releases landed on October 19, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Klingua 2.0 | VPD Chart |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/klingua-20/id6469101880/reviews)** | [4.5 (31 ratings)](https://appshunter.io/ios/app/vpd-chart/id6470015847/reviews) |
| Number of ratings | 4 | **31** |
| Positive reviews | **100.0% of reviews** | 73.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 51 MB | 49 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Lloyd Tanedo](https://appshunter.io/developer/1711548691) | [INNOVO DEV S.R.L.](https://appshunter.io/developer/1814828527) |

## What reviewers say

### Klingua 2.0

[App page](https://appshunter.io/ios/app/klingua-20/id6469101880)

This application offers instant voice translation between multiple languages. Simply press a button to speak, then release to hear the translated audio. It supports a variety of popular languages for quick communication.

**Highlights:** Instant voice translation, Supports 9 languages, Simple press-to-talk interface, Real-time audio output

**Features:** macOS Compatibility

**In-app purchases:** none


### VPD Chart

[App page](https://appshunter.io/ios/app/vpd-chart/id6470015847)

This app calculates Vapor Pressure Deficit (VPD) using air temperature, relative humidity, and canopy temperature. It offers real-time charting, sensor integration, and educational tools to understand plant growth environments. Organize data by zones and visualize dew point areas.

**Highlights:** VPD calculation, Interactive VPD chart, Sensor integration, Zone organization, Dew point visualization, Grow Timeline

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VPD Chart Plus (monthly) | $3.99 | per month |
| VPD Chart Plus (annual) | $29.99 | per year |


## Frequently asked questions

### Is Klingua 2.0 free?

Klingua 2.0 is free to download, with no in-app purchases.

### Is VPD Chart free?

VPD Chart is free to download, with in-app purchases available.

### Which has better reviews, Klingua 2.0 or VPD Chart?

Klingua 2.0 is rated higher. Klingua 2.0 averages 5.0 out of 5 from 4 ratings, while VPD Chart averages 4.5 from 31 ratings.

### Do Klingua 2.0 or VPD Chart have ads?

Neither Klingua 2.0 nor VPD Chart shows ads.

### Which is updated more often, Klingua 2.0 or VPD Chart?

Klingua 2.0 ships an update every 9 months, and VPD Chart every 3 weeks. Most recently, Klingua 2.0 was updated on October 19, 2026 and VPD Chart on October 22, 2026.

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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.*