# SisoRis vs Less

The clearest difference is in-app purchases: SisoRis at none against Less's 3. SisoRis also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.6). Less's advantage is update cadence (every 5 weeks vs every 3 months). On price and ads there is nothing between them.

Both are free to download. Less sells 3 in-app purchases, starting at $1.99 per month. SisoRis asks for nothing beyond the download.

SisoRis ships an update every 3 months, Less every 5 weeks. The most recent releases landed on November 1, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | SisoRis | Less |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Monetization | Free | — |
| Size | 6 MB | 11 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Sisoft Saglik Bilgi Sistemleri](https://appshunter.io/developer/419293655) | [Muhammed Abdullah Gursu](https://appshunter.io/developer/1894537836) |

## What reviewers say

### SisoRis

[App page](https://appshunter.io/ios/app/sisoris/id834295711)

This application allows doctors to view patient PACS images and analyze reports on mobile devices. It facilitates electronic access to medical images and reporting from anywhere with a Wi-Fi connection, replacing traditional paper or film-based methods.

**Highlights:** View patient PACS images, Analyze and approve reports, Access patient information, Filter patients, Electronic medical records

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

**In-app purchases:** none


### Less

[App page](https://appshunter.io/ios/app/less-smoking-log-and-quit/id6762529598)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $1.99 | per month |
| Annual Premium | $7.99 | per year |
| Lifetime Premium | $39.99 | one-time |


## Frequently asked questions

### Is SisoRis free?

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

### Is Less free?

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

### Do SisoRis or Less have ads?

Neither SisoRis nor Less shows ads.

### Which is updated more often, SisoRis or Less?

SisoRis ships an update every 3 months, and Less every 5 weeks. Most recently, SisoRis was updated on November 1, 2026 and Less on October 8, 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.*