# UB Smart Bus vs Erel

The clearest difference is ads: UB Smart Bus at none against Erel's shown. UB Smart Bus also leads on update cadence (every 2 months vs every 6 months) and iOS requirement (11.4 vs 15.1). On price, 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.

UB Smart Bus ships an update every 2 months, Erel every 6 months. The most recent releases landed on October 26, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | UB Smart Bus | Erel |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.5 (79 ratings)](https://appshunter.io/ios/app/ub-smart-bus/id1076088335/reviews)** | — |
| Number of ratings | **79** | — |
| Positive reviews | 11.8% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 2 months** | Every 6 months |
| Monetization | Free | — |
| Size | 28 MB | 40 MB |
| Requires iOS | **11.4** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ulaanbaatar smart card](https://appshunter.io/developer/1076088334) | [Odilah Tech LLC](https://appshunter.io/developer/1694199468) |

## What reviewers say

### UB Smart Bus

[App page](https://appshunter.io/ios/app/ub-smart-bus/id1076088335)

This app provides real-time bus arrival information and route details for Ulaanbaatar citizens. It helps users find nearby bus stops, plan transfers, and check bus fares. You can also save frequently used routes and stops for quick access.

**Highlights:** Real-time bus location and route info, Bus transfer and fare information, Save favorite routes and stops, Find nearby bus stops, Search bus routes

**Features:** Vision Pro support

**In-app purchases:** none


### Erel

[App page](https://appshunter.io/ios/app/erel/id6744045418)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is UB Smart Bus free?

UB Smart Bus is free to download, with no in-app purchases.

### Is Erel free?

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

### Do UB Smart Bus or Erel have ads?

Erel shows ads; UB Smart Bus does not.

### Which is updated more often, UB Smart Bus or Erel?

UB Smart Bus ships an update every 2 months, and Erel every 6 months. Most recently, UB Smart Bus was updated on October 26, 2026 and Erel on October 10, 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.*