# One US Dollar vs rialir.com

The clearest difference is ads: rialir.com at none against One US Dollar's shown. rialir.com also leads on iOS requirement (13.4 vs 17.0). On price, update cadence, 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.

One US Dollar ships an update every 5 days, rialir.com every 3 days. The most recent releases landed on October 30, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | One US Dollar | rialir.com |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 5 days | **Every 3 days** |
| Size | 8 MB | 19 MB |
| Requires iOS | 17.0 | **13.4** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Silas Hayri](https://appshunter.io/developer/1721976128) | [Mehrdad Mehralian](https://appshunter.io/developer/1736961294) |

## What reviewers say

### One US Dollar

[App page](https://appshunter.io/ios/app/one-us-dollar/id6474574039)

**Features:** macOS Compatibility

**In-app purchases:** none


### rialir.com

[App page](https://appshunter.io/ios/app/rialircom-try-exchange-rates/id6498321738)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is One US Dollar free?

One US Dollar is free to download, with no in-app purchases.

### Is rialir.com free?

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

### Do One US Dollar or rialir.com have ads?

One US Dollar shows ads; rialir.com does not.

### Which is updated more often, One US Dollar or rialir.com?

One US Dollar ships an update every 5 days, and rialir.com every 3 days. Most recently, One US Dollar was updated on October 30, 2026 and rialir.com on November 4, 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.*