Expert Assistant Professional vs RelativityOne
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Expert Assistant Professional
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.
- Time capture
- Expense capture
- Bill editing
- Client inquiries
- Matter inquiries
- Mobile access
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Welcome to Expert Assistant Professional (EA Pro), the mobile solution that enhances the professional’s Aderant Expert experience. Regardless of location, EA Pro provides the agile professional with access to the tasks and information needed to get their job done effectively and efficiently. Capture time and expenses, edit bills, and inquire on clients and matters, all within the EA Pro experience. This application is supported for Aderant Expert version 8.2 or later.
RelativityOne
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.
- Secure document sharing
- Access Views and Saved Searches
- Code documents with instant syncing
- Mobile access to RelativityOne
- 6-digit passcode/biometric login
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RelativityOne provides everything needed to tackle document review challenges. Get the control and flexibility you need to amplify your team’s efforts and get to the substance of a matter. Whether you’re in the office or on the go, the mobile application for RelativityOne allows you to securely share documents, access Views and Saved Searches, and code documents with all decisions instantly reflected in RelativityOne. RelativityOne was built with security top of mind. The app requires a 6-digit passcode (or TouchID / FaceID) and a RelativityOne log in.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Expert Assistant Professional | RelativityOne |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (6 ratings) | 3.4 (27 ratings) — better |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| Number of ratings | 6 | 27 — better |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 14.0 — better |
| Further details — not scored | ||
| Size | 19 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Aderant Holdings Inc. | Relativity ODA LLC |
Customer experience
Expert Assistant Professional
RelativityOne
In-app purchases
Expert Assistant Professional
No in-app purchases
RelativityOne
No in-app purchases
Questions
Is Expert Assistant Professional free?
Is RelativityOne free?
Which has better reviews, Expert Assistant Professional or RelativityOne?
Do Expert Assistant Professional or RelativityOne have ads?
Which is updated more often, Expert Assistant Professional or RelativityOne?
Other comparisons
