# On vs SentryEv

The clearest difference is update cadence: SentryEv at every 9 days against On's every 5 weeks. 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.

On ships an update every 5 weeks, SentryEv every 9 days. The most recent releases landed on September 30, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | On | SentryEv |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (11 ratings)](https://appshunter.io/ios/app/on-charge/id6443683498/reviews)** | — |
| Number of ratings | **11** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 9 days** |
| Monetization | Free | — |
| Size | 61 MB | 57 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [On Charge](https://appshunter.io/developer/1648351173) | [Hantrix Tech](https://appshunter.io/developer/1896771843) |

## What reviewers say

### On

[App page](https://appshunter.io/ios/app/on-charge/id6443683498)

This app helps electric vehicle owners manage their charging sessions. It provides real-time data on energy consumption and costs, locates nearby charging stations, and allows for remote control of charging. Users can track their charging history and view insightful statistics.

**Highlights:** Locate nearby charging stations, Start/Stop charging sessions, Real-time energy and cost tracking, Charging history and statistics, Environmental impact indicator, QR Code station lookup

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

**In-app purchases:** none


### SentryEv

[App page](https://appshunter.io/ios/app/sentryev/id6771111431)

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

**In-app purchases:** none


## Frequently asked questions

### Is On free?

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

### Is SentryEv free?

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

### Do On or SentryEv have ads?

Neither On nor SentryEv shows ads.

### Which is updated more often, On or SentryEv?

On ships an update every 5 weeks, and SentryEv every 9 days. Most recently, On was updated on September 30, 2026 and SentryEv on October 3, 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.*