# AutoSilent vs VPD Chart

The clearest difference is rating: VPD Chart at 4.5 against AutoSilent's 3.5. VPD Chart also leads on review sentiment (74% vs 42%). AutoSilent's advantage is ratings volume (183 vs 30) and iOS requirement (12.0 vs 15.1). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. AutoSilent sells 1 in-app purchase, starting at $1.99 per month and VPD Chart sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

VPD Chart holds the better App Store score, 4.5 against 3.5. That said, the two scores are not equally well evidenced: AutoSilent has 183 ratings behind it against 30, so its average is the more settled of the two. Written reviews point the same way: 42% of AutoSilent's written reviews are positive against 74% of VPD Chart's.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 7, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | AutoSilent | VPD Chart |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (183 ratings)](https://appshunter.io/ios/app/autosilent/id474777148/reviews) | **[4.5 (30 ratings)](https://appshunter.io/ios/app/vpd-chart/id6470015847/reviews)** |
| Number of ratings | **183** | 30 |
| Positive reviews | 42.1% of reviews | **73.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 25 MB | 49 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Niv Gutherz](https://appshunter.io/developer/386496354) | [INNOVO DEV S.R.L.](https://appshunter.io/developer/1814828527) |

## What reviewers say

### AutoSilent

[App page](https://appshunter.io/ios/app/autosilent/id474777148)

This app automatically silences your iPhone or iPad during scheduled meetings, at specific locations, or at set times. It seamlessly integrates with your calendar and location services to manage your device's ringer, ensuring you're never disturbed or embarrassed by notifications in inappropriate situations. It can also automatically unmute your device when the event concludes.

**Highlights:** Automatic silencing for calendar events, Location-based silencing, Scheduled silencing, Automatic unmuting, Calendar synchronization, Customizable silent event criteria

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AutoSilent Premium Features | $1.99 | per month |

**What reviewers like**

- 🚀 Powerful scheduling and automation
- ⏱️ Convenient timer functionality
- 📆 Integrates with calendar events
- 🔕 Silences phone during meetings/events

**What reviewers complain about**

- 🔋 High battery drain due to location tracking
- 💰 Subscription model for existing users
- 🤔 Confusing or unintuitive interface
- 🐛 Unreliable or inconsistent behavior

**Reported bugs**

- Silencing not working as expected
- Constant notifications/alerts from the app
- Losing custom settings after updates

**Requested features**

- Ability to selectively silence contacts/numbers
- Master on/off switch for easier deactivation
- More flexible scheduling options (e.g. overnight)
- Improved integration with iOS Focus mode


### 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 AutoSilent free?

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

### Is VPD Chart free?

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

### Which has better reviews, AutoSilent or VPD Chart?

VPD Chart is rated higher. AutoSilent averages 3.5 out of 5 from 183 ratings, while VPD Chart averages 4.5 from 30 ratings.

### Do AutoSilent or VPD Chart have ads?

Neither AutoSilent nor VPD Chart shows ads.

### Which is updated more often, AutoSilent or VPD Chart?

AutoSilent ships an update every 3 weeks, and VPD Chart every 3 weeks. Most recently, AutoSilent was updated on October 7, 2026 and VPD Chart on October 14, 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.*