# IO vs Chalker

The clearest difference is in-app purchases: IO at none against Chalker's 3. IO also leads on iOS requirement (9.0 vs 18). On price, ads and device support there is nothing between them.

Both are free to download. Chalker sells 3 in-app purchases, starting at $2.99 per month. IO asks for nothing beyond the download.

## The numbers

| Metric | IO | Chalker |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 4 days |
| Monetization | **Free** | Free with in-app purchases |
| Size | 11 MB | 24 MB |
| Requires iOS | **9.0** | 18 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Digitech Co., Ltd.](https://appshunter.io/developer/1281561834) | [Maximilian Berndt](https://appshunter.io/developer/1689867635) |

## What reviewers say

### IO

[App page](https://appshunter.io/ios/app/io-hawk/id1531669334)

This app syncs with smart cycling hardware to display detailed riding data, manage your e-bike, and provide anti-theft features. It offers a user-friendly interface for tracking performance and staying connected on the go.

**Highlights:** Riding data synchronization, Detailed tour reports, E-bike management, Anti-theft alert, Bike locator, Phone call notifications

**In-app purchases:** none


### Chalker

[App page](https://appshunter.io/ios/app/chalker-dart-scorekeeper-pdc/id6766213337)

This app helps dart players track scores and improve their game. It offers various game modes, training exercises, and configurable bots for practice. Analyze your performance with detailed statistics to identify areas for improvement.

**Highlights:** Multiple dart game modes (X01, Cricket, Baseball), Skill-building training exercises, Configurable bot opponents, Detailed game statistics and leaderboards, In-game rules reference

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Chalker Pro Monthly | $2.99 | per month |
| Chalker Pro (Yearly) | $17.99 | per year |
| Dart Tracker Pro (Lifetime) | $39.99 | one-time |


## Frequently asked questions

### Is IO free?

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

### Is Chalker free?

Chalker is free to download, with in-app purchases available.

### Do IO or Chalker have ads?

Neither IO nor Chalker shows ads.

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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.*