# Expert Assistant Professional vs RelativityOne

The clearest difference is rating: RelativityOne at 3.4 against Expert Assistant Professional's 3.0. RelativityOne also leads on update cadence (every 2 months vs every 3 months) and ratings volume (27 vs 6). On price, review sentiment, 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.

RelativityOne holds the better App Store score, 3.4 against 3.0. Both are backed by a comparable volume of ratings — 6 and 27 respectively. Written reviews split almost evenly too, at 0% and 0% positive.

Expert Assistant Professional ships an update every 3 months, RelativityOne every 2 months. The most recent releases landed on September 17, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Expert Assistant Professional | RelativityOne |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (6 ratings)](https://appshunter.io/ios/app/expert-assistant-professional/id1294470752/reviews) | **[3.4 (27 ratings)](https://appshunter.io/ios/app/relativityone/id1452895391/reviews)** |
| Number of ratings | 6 | **27** |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 19 MB | 17 MB |
| Requires iOS | 15.1 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Aderant Holdings Inc.](https://appshunter.io/developer/896510525) | [Relativity ODA LLC](https://appshunter.io/developer/1289795097) |

## What reviewers say

### Expert Assistant Professional

[App page](https://appshunter.io/ios/app/expert-assistant-professional/id1294470752)

This mobile app provides Aderant Expert users with on-the-go access to essential professional tasks. Manage time, expenses, and client information efficiently from any location. It's designed to streamline workflows for agile professionals.

**Highlights:** Time capture, Expense capture, Bill editing, Client inquiries, Matter inquiries, Mobile access

**Features:** Vision Pro support

**In-app purchases:** none


### RelativityOne

[App page](https://appshunter.io/ios/app/relativityone/id1452895391)

This business application offers secure document review and management capabilities for legal professionals. Access case files, share documents, and make coding decisions from anywhere, with all changes syncing instantly to the main platform. It prioritizes security with passcode and biometric login options.

**Highlights:** Secure document sharing, Access Views and Saved Searches, Code documents with instant syncing, Mobile access to RelativityOne, 6-digit passcode/biometric login

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Expert Assistant Professional free?

Expert Assistant Professional is free to download, with no in-app purchases.

### Is RelativityOne free?

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

### Which has better reviews, Expert Assistant Professional or RelativityOne?

RelativityOne is rated higher. Expert Assistant Professional averages 3.0 out of 5 from 6 ratings, while RelativityOne averages 3.4 from 27 ratings.

### Do Expert Assistant Professional or RelativityOne have ads?

Neither Expert Assistant Professional nor RelativityOne shows ads.

### Which is updated more often, Expert Assistant Professional or RelativityOne?

Expert Assistant Professional ships an update every 3 months, and RelativityOne every 2 months. Most recently, Expert Assistant Professional was updated on September 17, 2026 and RelativityOne on September 14, 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.*