# Counter vs E Sentry Systems

The clearest difference is price: E Sentry Systems at Free against Counter's $0.99. E Sentry Systems also leads on in-app purchases (none vs 5) and update cadence (every 3 weeks vs every 10 months). On ads, device support and iOS requirement there is nothing between them.

E Sentry Systems is free to download; Counter costs $0.99 up front. Counter sells 5 one-off in-app purchases. E Sentry Systems asks for nothing beyond the download.

Counter ships an update every 10 months, E Sentry Systems every 3 weeks. The most recent releases landed on September 23, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Counter | E Sentry Systems |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 3 weeks** |
| Size | 5 MB | 54 MB |
| Requires iOS | 17.6 | **16.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ralf Koch](https://appshunter.io/developer/596125475) | [IRISS Inc,](https://appshunter.io/developer/1245323320) |

## What reviewers say

### Counter

[App page](https://appshunter.io/ios/app/counter-tally-meister/id1554831111)

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlocked Version | $0.99 | one-time |
| Regular Coffee | $0.99 | one-time |
| Double Espresso | $2.99 | one-time |
| Caramel Macchiato | $4.99 | one-time |
| Cappuccino and Sweet | $6.99 | one-time |


### 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 Counter free?

Counter costs $0.99, and also offers in-app purchases.

### Is E Sentry Systems free?

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

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

Neither Counter nor E Sentry Systems shows ads.

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

Counter ships an update every 10 months, and E Sentry Systems every 3 weeks. Most recently, Counter was updated on September 23, 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.*