# RelativityOne vs 1550 Lamar

The clearest difference is update cadence: RelativityOne at every 2 months against 1550 Lamar's every 4 months. RelativityOne also leads on device support (3 vs 1) and iOS requirement (14.0 vs 16.0). On price, 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 ships an update every 2 months, 1550 Lamar every 4 months. The most recent releases landed on September 14, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | RelativityOne | 1550 Lamar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.4 (27 ratings)](https://appshunter.io/ios/app/relativityone/id1452895391/reviews)** | — |
| Number of ratings | **27** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Free | — |
| Size | 17 MB | 107 MB |
| Requires iOS | **14.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Relativity ODA LLC](https://appshunter.io/developer/1289795097) | [SCD BLK 250 Houston LLC](https://appshunter.io/developer/1729359724) |

## What reviewers say

### 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


### 1550 Lamar

[App page](https://appshunter.io/ios/app/1550-lamar/id6477445201)

**Features:** Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is RelativityOne free?

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

### Is 1550 Lamar free?

1550 Lamar is free to download, with no in-app purchases.

### Do RelativityOne or 1550 Lamar have ads?

Neither RelativityOne nor 1550 Lamar shows ads.

### Which is updated more often, RelativityOne or 1550 Lamar?

RelativityOne ships an update every 2 months, and 1550 Lamar every 4 months. Most recently, RelativityOne was updated on September 14, 2026 and 1550 Lamar on October 5, 2026.

---

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