# i vs ESL System｜

The clearest difference is in-app purchases: ESL System｜ at none against i's 4. ESL System｜ also leads on update cadence (every 2 weeks vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. i sells 4 in-app purchases, starting at $9.99 per month. ESL System｜ asks for nothing beyond the download.

i ships an update every 3 months, ESL System｜ every 2 weeks. The most recent releases landed on October 8, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | i | ESL System｜ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Size | 16 MB | 42 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [I-RESONATE TECHNOLOGIES PRIVATE LIMITED](https://appshunter.io/developer/1618598988) | [Soarfree](https://appshunter.io/developer/1746430123) |

## What reviewers say

### i

[App page](https://appshunter.io/ios/app/i-resonate/id1618598986)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Standard Subscription | $9.99 | per month |
| Pro Monthly Subscription | $14.99 | per month |
| Yearly Standard Subscription | $119.99 | per year |
| Pro Yearly Subscription | $239.00 | per year |


### ESL System｜

[App page](https://appshunter.io/ios/app/esl-system/id6502671453)

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

**In-app purchases:** none


## Frequently asked questions

### Is i free?

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

### Is ESL System｜ free?

ESL System｜ is free to download, with no in-app purchases.

### Do i or ESL System｜ have ads?

Neither i nor ESL System｜ shows ads.

### Which is updated more often, i or ESL System｜?

i ships an update every 3 months, and ESL System｜ every 2 weeks. Most recently, i was updated on October 8, 2026 and ESL System｜ on October 25, 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.*