# Challenger@Work vs Calorie AI Counter

The clearest difference is in-app purchases: Challenger@Work at none against Calorie AI Counter's 2. Calorie AI Counter's advantage is update cadence (fortnightly vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Calorie AI Counter sells 2 in-app purchases, starting at $1.99 per 7 days. Challenger@Work asks for nothing beyond the download.

Challenger@Work ships an update every 2 months, Calorie AI Counter fortnightly. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Challenger@Work | Calorie AI Counter |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Size | 11 MB | 6 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Green IT](https://appshunter.io/developer/1500914276) | [Saad Umar](https://appshunter.io/developer/1759858926) |

## What reviewers say

### Challenger@Work

[App page](https://appshunter.io/ios/app/challengerwork/id1660095565)

**Features:** macOS Compatibility

**In-app purchases:** none


### Calorie AI Counter

[App page](https://appshunter.io/ios/app/calorie-ai-counter/id6744887468)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly subscription | $1.99 | per 7 days |
| Monthly subscription | $6.99 | per month |


## Frequently asked questions

### Is Challenger@Work free?

Challenger@Work is free to download, with no in-app purchases.

### Is Calorie AI Counter free?

Calorie AI Counter is free to download, with in-app purchases available.

### Do Challenger@Work or Calorie AI Counter have ads?

Neither Challenger@Work nor Calorie AI Counter shows ads.

### Which is updated more often, Challenger@Work or Calorie AI Counter?

Challenger@Work ships an update every 2 months, and Calorie AI Counter fortnightly. Most recently, Challenger@Work was updated on October 27, 2026 and Calorie AI Counter on October 25, 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.*