# Correlate vs Koffee

The clearest difference is price: Koffee at Free against Correlate's $12.99. Correlate's advantage is in-app purchases (none vs 3). On update cadence, ads, device support and iOS requirement there is nothing between them.

Koffee is free to download; Correlate costs $12.99 up front. Koffee sells 3 in-app purchases, starting at $1.99 per month. Correlate asks for nothing beyond the download.

Correlate ships an update every 3 weeks, Koffee monthly. Both last shipped on October 31, 2026.

## The numbers

| Metric | Correlate | Koffee |
| --- | --- | --- |
| Price | $12.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Size | 2 MB | 53 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPod, Apple Watch** |
| Age rating | 4+ | 12+ |
| Developer | [James Michael Beck](https://appshunter.io/developer/1877941198) | [Jose Maria Moreno](https://appshunter.io/developer/1866215737) |

## What reviewers say

### Correlate

[App page](https://appshunter.io/ios/app/correlate-life-journal/id6759300356)

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

**In-app purchases:** none


### Koffee

[App page](https://appshunter.io/ios/app/koffee-caffeine-tracker/id6760164016)

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Koffee Monthly | $1.99 | per month |
| Koffee Annual | $9.99 | per year |
| Koffee Lifetime | $19.99 | one-time |


## Frequently asked questions

### Is Correlate free?

Correlate costs $12.99, with no in-app purchases.

### Is Koffee free?

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

### Do Correlate or Koffee have ads?

Neither Correlate nor Koffee shows ads.

### Which is updated more often, Correlate or Koffee?

Correlate ships an update every 3 weeks, and Koffee monthly. Most recently, Correlate was updated on October 31, 2026 and Koffee on October 31, 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.*