# OTROTango vs eBrAIny Index

The clearest difference is update cadence: OTROTango at monthly against eBrAIny Index's every 7 months. 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.

OTROTango ships an update monthly, eBrAIny Index every 7 months. The most recent releases landed on September 15, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | OTROTango | eBrAIny Index |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 7 months |
| Size | 32 MB | 32 MB |
| Requires iOS | **12.4** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ALGO TECH LIMITED](https://appshunter.io/developer/1220310133) | [eBroker Systems Limited](https://appshunter.io/developer/1146725918) |

## What reviewers say

### OTROTango

[App page](https://appshunter.io/ios/app/otrotango/id1223066628)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### eBrAIny Index

[App page](https://appshunter.io/ios/app/ebrainy-index/id6739239464)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OTROTango free?

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

### Is eBrAIny Index free?

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

### Do OTROTango or eBrAIny Index have ads?

Neither OTROTango nor eBrAIny Index shows ads.

### Which is updated more often, OTROTango or eBrAIny Index?

OTROTango ships an update monthly, and eBrAIny Index every 7 months. Most recently, OTROTango was updated on September 15, 2026 and eBrAIny Index on September 14, 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.*