# Kollo vs Currency Research Events

The clearest difference is update cadence: Kollo at weekly against Currency Research Events's every 16 months. Currency Research Events's advantage is iOS requirement (11.0 vs 13.4). 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.

Kollo ships an update weekly, Currency Research Events every 16 months. Both last shipped on October 30, 2026.

## The numbers

| Metric | Kollo | Currency Research Events |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 16 months |
| Size | 41 MB | 78 MB |
| Requires iOS | 13.4 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Instinct Tech ApS](https://appshunter.io/developer/1776854951) | [Currency Research USA Corp](https://appshunter.io/developer/1475511288) |

## What reviewers say

### Kollo

[App page](https://appshunter.io/ios/app/kollo/id6737515863)

**Features:** macOS Compatibility

**In-app purchases:** none


### Currency Research Events

[App page](https://appshunter.io/ios/app/currency-research-events/id6738112087)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is Kollo free?

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

### Is Currency Research Events free?

Currency Research Events is free to download, with no in-app purchases.

### Do Kollo or Currency Research Events have ads?

Neither Kollo nor Currency Research Events shows ads.

### Which is updated more often, Kollo or Currency Research Events?

Kollo ships an update weekly, and Currency Research Events every 16 months. Most recently, Kollo was updated on October 30, 2026 and Currency Research Events on October 30, 2026.

---

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