# Nexus®Pro vs 121

The clearest difference is update cadence: 121 at fortnightly against Nexus®Pro's every 6 weeks. On price, ads, 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.

Nexus®Pro ships an update every 6 weeks, 121 fortnightly. The most recent releases landed on September 8, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Nexus®Pro | 121 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Fortnightly** |
| Monetization | Free | — |
| Size | 60 MB | 254 MB |
| Requires iOS | 17.6 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ABB Information Systems AG](https://appshunter.io/developer/1026885389) | [Jones Lang LaSalle Incorporated](https://appshunter.io/developer/429518140) |

## What reviewers say

### Nexus®Pro

[App page](https://appshunter.io/ios/app/nexuspro/id1504425021)

Manage and control emergency lighting installations remotely. This app allows for setup, maintenance, and activity logging in the cloud, ensuring system safety and transparency. It is designed for organizations of any size, supporting multiple users and property management.

**Highlights:** Remote setup and control, Cloud-based activity logging, Cyber security via ABB Ability™ platform, Transparent system inspection, Proactive maintenance, Multi-user organization support, Property management tool

**Features:** Vision Pro support

**In-app purchases:** none


### 121

[App page](https://appshunter.io/ios/app/121-131-steuart/id1554815853)

**Features:** Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is Nexus®Pro free?

Nexus®Pro is free to download, with no in-app purchases.

### Is 121 free?

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

### Do Nexus®Pro or 121 have ads?

Neither Nexus®Pro nor 121 shows ads.

### Which is updated more often, Nexus®Pro or 121?

Nexus®Pro ships an update every 6 weeks, and 121 fortnightly. Most recently, Nexus®Pro was updated on September 8, 2026 and 121 on September 17, 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.*