# Caffeine Tracker vs calinfo

The clearest difference is update cadence: Caffeine Tracker at every 8 days against calinfo's every 3 weeks. calinfo's advantage is iOS requirement (15.1 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Caffeine Tracker sells 2 in-app purchases, starting at $6.99 per year and calinfo sells 3 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

Caffeine Tracker ships an update every 8 days, calinfo every 3 weeks. The most recent releases landed on November 13, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Caffeine Tracker | calinfo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/caffeine-tracker-doppio/id6758040507/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 3 weeks |
| Monetization | Freemium | — |
| Size | 26 MB | 51 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [MOBILE CODING FACTORY DOO](https://appshunter.io/developer/1590013609) | [Khalid KALIB](https://appshunter.io/developer/1883376588) |

## What reviewers say

### Caffeine Tracker

[App page](https://appshunter.io/ios/app/caffeine-tracker-doppio/id6758040507)

This app helps you track your caffeine intake and understand its impact on your sleep. It provides personalized insights into your caffeine metabolism, allowing you to build better habits and brew coffee like a pro. Syncs with Apple Health for comprehensive sleep analysis.

**Highlights:** Log caffeine intake with custom drinks, Personalized metabolism curve and half-life, Caffeine level forecasts, Sleep rating and efficiency tracking, Brewing calculator and timer, Apple Health integration, Detox planner

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Doppio Pro Yearly | $6.99 | per year |
| Doppio Lifetime | $14.99 | one-time |


### calinfo

[App page](https://appshunter.io/ios/app/calinfo/id6760232134)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CalInfo Pro Monthly | $6.99 | per month |
| CalInfo Pro 3 Months | $17.99 | per 3 months |
| CalInfo Pro Yearly | $79.99 | per year |


## Frequently asked questions

### Is Caffeine Tracker free?

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

### Is calinfo free?

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

### Do Caffeine Tracker or calinfo have ads?

Neither Caffeine Tracker nor calinfo shows ads.

### Which is updated more often, Caffeine Tracker or calinfo?

Caffeine Tracker ships an update every 8 days, and calinfo every 3 weeks. Most recently, Caffeine Tracker was updated on November 13, 2026 and calinfo on November 5, 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.*