# Proteus Vision vs ESR 2026

The clearest difference is update cadence: Proteus Vision at fortnightly against ESR 2026's every 11 months. Proteus Vision also leads on device support (4 vs 2) and iOS requirement (12.0 vs 17.0). On price, 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.

Proteus Vision ships an update fortnightly, ESR 2026 every 11 months. The most recent releases landed on October 4, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Proteus Vision | ESR 2026 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 11 months |
| Size | 126 MB | 77 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Base Information Management Pvt. Ltd.](https://appshunter.io/developer/506021550) | [Emirates Society for Rheumatology](https://appshunter.io/developer/1497797194) |

## What reviewers say

### Proteus Vision

[App page](https://appshunter.io/ios/app/proteus-vision/id1217375829)

**Features:** macOS Compatibility

**In-app purchases:** none


### ESR 2026

[App page](https://appshunter.io/ios/app/esr-2026/id6446110461)

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

**In-app purchases:** none


## Frequently asked questions

### Is Proteus Vision free?

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

### Is ESR 2026 free?

ESR 2026 is free to download, with no in-app purchases.

### Do Proteus Vision or ESR 2026 have ads?

Neither Proteus Vision nor ESR 2026 shows ads.

### Which is updated more often, Proteus Vision or ESR 2026?

Proteus Vision ships an update fortnightly, and ESR 2026 every 11 months. Most recently, Proteus Vision was updated on October 4, 2026 and ESR 2026 on October 24, 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.*