# Delta iServe vs EastmanOne

The clearest difference is iOS requirement: Delta iServe at 13.0 against EastmanOne's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 25, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Delta iServe | EastmanOne |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 40.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | — | Free |
| Size | 46 MB | 28 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Selfservit Solutions Pvt.Ltd](https://appshunter.io/developer/945665027) | [Eastman Auto And Power Limited](https://appshunter.io/developer/1712251960) |

## What reviewers say

### Delta iServe

[App page](https://appshunter.io/ios/app/delta-iserve/id6502829496)

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

**In-app purchases:** none


### EastmanOne

[App page](https://appshunter.io/ios/app/eastmanone/id6745115068)

Monitor solar energy systems in real-time with detailed insights into generation, battery levels, and efficiency. Receive instant notifications for rapid issue identification and maximize energy yield. Simplifies solar energy management for residential and commercial users.

**Highlights:** Real-time data logging, Remote monitoring, Historical performance analysis, Energy generation tracking, Battery charge level monitoring, System efficiency insights, Instant notifications

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Delta iServe free?

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

### Is EastmanOne free?

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

### Do Delta iServe or EastmanOne have ads?

Neither Delta iServe nor EastmanOne shows ads.

### Which is updated more often, Delta iServe or EastmanOne?

Delta iServe ships an update every 2 months, and EastmanOne every 2 months. Most recently, Delta iServe was updated on September 25, 2026 and EastmanOne on October 30, 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.*