# Caffeine Tracker vs EnergyZ

The clearest difference is in-app purchases: EnergyZ at none against Caffeine Tracker's 2. EnergyZ also leads on iOS requirement (16.0 vs 18.0). Caffeine Tracker's advantage is update cadence (every 8 days vs every 3 months). On price, ads 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. EnergyZ asks for nothing beyond the download.

Caffeine Tracker ships an update every 8 days, EnergyZ every 3 months. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Caffeine Tracker | EnergyZ |
| --- | --- | --- |
| 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 | **No** |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 3 months |
| Monetization | Freemium | — |
| Size | 25 MB | 135 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [MOBILE CODING FACTORY DOO](https://appshunter.io/developer/1590013609) | [Andrea Solutions](https://appshunter.io/developer/1734094747) |

## 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

**In-app purchases (2)**

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


### EnergyZ

[App page](https://appshunter.io/ios/app/energyz/id6759220259)

**Features:** Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is Caffeine Tracker free?

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

### Is EnergyZ free?

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

### Do Caffeine Tracker or EnergyZ have ads?

Neither Caffeine Tracker nor EnergyZ shows ads.

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

Caffeine Tracker ships an update every 8 days, and EnergyZ every 3 months. Most recently, Caffeine Tracker was updated on October 31, 2026 and EnergyZ 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.*