# SAJ vs Unical Ufly

The clearest difference is iOS requirement: SAJ at 10.0 against Unical Ufly's 15.0. 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.

SAJ ships an update every 12 months, Unical Ufly every 18 months. The most recent releases landed on October 7, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | SAJ | Unical Ufly |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 11.1% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 12 months** | Every 18 months |
| Monetization | — | Free |
| Size | 69 MB | 10 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SAJ Instrument Ab](https://appshunter.io/developer/962246290) | [DigiBrain](https://appshunter.io/developer/1124086004) |

## What reviewers say

### SAJ

[App page](https://appshunter.io/ios/app/saj-dms-mobile/id962279584)

**Features:** macOS Compatibility

**In-app purchases:** none


### Unical Ufly

[App page](https://appshunter.io/ios/app/unical-ufly/id1124086005)

Control your Unical heating system remotely via smartphone or tablet. Program daily and weekly schedules for heating and hot water, monitor boiler status, and receive push notifications for system errors. Supports multiple profiles for different homes.

**Highlights:** Remote heating system control, Daily and weekly programming, Domestic hot water scheduling, Boiler status monitoring, Solar system control, Error history and system reset, Push notifications for system issues

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SAJ free?

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

### Is Unical Ufly free?

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

### Do SAJ or Unical Ufly have ads?

Neither SAJ nor Unical Ufly shows ads.

### Which is updated more often, SAJ or Unical Ufly?

SAJ ships an update every 12 months, and Unical Ufly every 18 months. Most recently, SAJ was updated on October 7, 2026 and Unical Ufly on October 12, 2026.

---

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