# FM Diamonds vs RDI Diamonds

The clearest difference is update cadence: RDI Diamonds at every 3 weeks against FM Diamonds's every 5 months. RDI Diamonds also leads on iOS requirement (13.0 vs 16.4). 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.

FM Diamonds ships an update every 5 months, RDI Diamonds every 3 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | FM Diamonds | RDI Diamonds |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rdi-diamonds/id6468219060/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 53 MB | 16 MB |
| Requires iOS | 16.4 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [FM Trading Company Inc.](https://appshunter.io/developer/1642920304) | [Braintree Products Inc.](https://appshunter.io/developer/948197557) |

## What reviewers say

### FM Diamonds

[App page](https://appshunter.io/ios/app/fm-diamonds/id1642920302)

**Features:** Vision Pro support

**In-app purchases:** none


### RDI Diamonds

[App page](https://appshunter.io/ios/app/rdi-diamonds/id6468219060)

Access a vast inventory of over 8,000 certified natural and lab-grown diamonds. This business app offers advanced search tools, flexible stock programs, and 24/7 live inventory access to help jewelry professionals succeed.

**Highlights:** 8,000+ diamonds in inventory, Simple stock programs, Highest certification standards, Natural and lab-grown diamond inventory, Advanced search tool, 24/7 live inventory access

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is FM Diamonds free?

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

### Is RDI Diamonds free?

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

### Do FM Diamonds or RDI Diamonds have ads?

Neither FM Diamonds nor RDI Diamonds shows ads.

### Which is updated more often, FM Diamonds or RDI Diamonds?

FM Diamonds ships an update every 5 months, and RDI Diamonds every 3 weeks. Most recently, FM Diamonds was updated on November 3, 2026 and RDI Diamonds on November 3, 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.*