# AllSensor vs E Sentry Systems

The clearest difference is update cadence: E Sentry Systems at every 3 weeks against AllSensor's every 3 months. AllSensor's advantage is iOS requirement (12.0 vs 16.0). 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.

AllSensor ships an update every 3 months, E Sentry Systems every 3 weeks. The most recent releases landed on September 19, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | AllSensor | E Sentry Systems |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Size | 60 MB | 54 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ZHANGZHOU EASTERN INTELLIGENT METER CO., LTD.](https://appshunter.io/developer/1064839954) | [IRISS Inc,](https://appshunter.io/developer/1245323320) |

## What reviewers say

### AllSensor

[App page](https://appshunter.io/ios/app/allsensor/id1589920082)

**Features:** macOS Compatibility

**In-app purchases:** none


### E Sentry Systems

[App page](https://appshunter.io/ios/app/e-sentry-systems/id6444192723)

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

**In-app purchases:** none


## Frequently asked questions

### Is AllSensor free?

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

### Is E Sentry Systems free?

E Sentry Systems is free to download, with no in-app purchases.

### Do AllSensor or E Sentry Systems have ads?

Neither AllSensor nor E Sentry Systems shows ads.

### Which is updated more often, AllSensor or E Sentry Systems?

AllSensor ships an update every 3 months, and E Sentry Systems every 3 weeks. Most recently, AllSensor was updated on September 19, 2026 and E Sentry Systems on September 9, 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.*