# E vs ONESTO SOLAR

The clearest difference is ads: ONESTO SOLAR at none against E's shown. ONESTO SOLAR also leads on iOS requirement (8.0 vs 10.3). On price, update cadence, 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.

Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on November 2, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | E | ONESTO SOLAR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/e-diagnostic/id1387730960/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | Every 4 months |
| Monetization | Ad-supported | — |
| Size | 42 MB | 59 MB |
| Requires iOS | 10.3 | **8.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [333 Corporate 1998, S.L.](https://appshunter.io/developer/601314449) | [Zhejiang Onesto Electric Co.,Ltd.](https://appshunter.io/developer/1705153314) |

## What reviewers say

### E

[App page](https://appshunter.io/ios/app/e-diagnostic/id1387730960)

This diagnostic tool helps identify potential swine diseases based on observed symptoms and animal age. It provides detailed descriptions and images of conditions, acting as an illustrative guide for users registered on pig333.com.

**Highlights:** Swine disease and condition descriptions, Images of major swine diseases, Symptom-based diagnosis, Age-specific disease lists, Detailed disease information, Multilingual support (English, Spanish)

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

**In-app purchases:** none


### ONESTO SOLAR

[App page](https://appshunter.io/ios/app/onesto-solar/id6443592685)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is E free?

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

### Is ONESTO SOLAR free?

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

### Do E or ONESTO SOLAR have ads?

E shows ads; ONESTO SOLAR does not.

### Which is updated more often, E or ONESTO SOLAR?

E ships an update every 4 months, and ONESTO SOLAR every 4 months. Most recently, E was updated on November 2, 2026 and ONESTO SOLAR on October 27, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*