# 21 Day Container Tracker vs Macro Sync

The clearest difference is in-app purchases: Macro Sync at none against 21 Day Container Tracker's 3. Macro Sync also leads on update cadence (every 4 days vs every 3 weeks). 21 Day Container Tracker's advantage is review sentiment (74% vs 58%) and rating (4.7 vs 4.5). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. 21 Day Container Tracker sells 3 in-app purchases, starting at $4.99 per 7 days. Macro Sync asks for nothing beyond the download.

21 Day Container Tracker holds the better App Store score, 4.7 against 4.5. Both are backed by a comparable volume of ratings — 510 and 602 respectively. Written reviews point the same way: 74% of 21 Day Container Tracker's written reviews are positive against 58% of Macro Sync's.

21 Day Container Tracker ships an update every 3 weeks, Macro Sync every 4 days. The most recent releases landed on October 2, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | 21 Day Container Tracker | Macro Sync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (510 ratings)](https://appshunter.io/ios/app/21-day-container-tracker/id994287813/reviews)** | [4.5 (602 ratings)](https://appshunter.io/ios/app/macro-sync/id6475427404/reviews) |
| Number of ratings | 510 | **602** |
| Positive reviews | **74.3% of reviews** | 58.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Monetization | Subscription | **Free with in-app purchases** |
| Size | 45 MB | 124 MB |
| Requires iOS | **15.0** | 16 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Cube Software Solutions Inc.](https://appshunter.io/developer/994287812) | [Macros Inc](https://appshunter.io/developer/1646133566) |

## What reviewers say

### 21 Day Container Tracker

[App page](https://appshunter.io/ios/app/21-day-container-tracker/id994287813)

This app helps users track their progress on a 21-day program. It allows for easy logging of containers, water intake, exercises, and body measurements. Visualize your journey with progress graphs and access an approved food list.

**Highlights:** Tap & Track™ container and water logging, Automatic container generation, Body Part Indicator™ measurements, Exercise tracking with custom options, Daily notes and body weight tracking, Progress graphs, Approved food list

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 21 Day Tracker Weekly | $4.99 | per 7 days |
| 21 Day Container Tracker Pro | $29.99 | per year |
| 21 Day Tracker Annual Pro | $29.99 | per year |

**What reviewers like**

- 👍 Easy to use
- 📊 Helpful for tracking progress
- 🔍 Comprehensive food lists
- 🗓️ Convenient for daily tracking
- 💪 Supports various fitness programs

**What reviewers complain about**

- 💰 Paid subscription required
- 🔁 Resets data after each cycle
- 🚫 Limited customization options
- 📋 Lacks detailed food logging
- 🔔 Needs more notifications/reminders

**Reported bugs**

- Data loss when switching between cycles
- Compatibility issues with older devices
- Inconsistent container tracking behavior

**Requested features**

- Ability to manually enter food items
- Long-term data tracking and analytics
- Integration with other fitness apps
- Customizable container settings
- Meal planning and recipe suggestions


### Macro Sync

[App page](https://appshunter.io/ios/app/macro-sync/id6475427404)

This app simplifies health and fitness by making nutrition tracking easy. Log meals, organize recipes, and monitor calories and macronutrients with proven recommendations. It offers a user-friendly interface with powerful tools for personalized diet management.

**Highlights:** Macro tracking, Micro tracking, Custom goals, Barcode scanner, Recipe creator, Verified food database, Community support

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

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 🚀 Accurate tracking
- 💡 Customizable macros
- 🚀 Efficient barcode scanning
- 👍 Helpful recipe builder

**What reviewers complain about**

- 🐛 Crashes and sync issues
- 🔍 Limited food database
- 🤔 Confusing UI and navigation
- 🔍 Inaccurate food entries
- 🤔 Inability to edit custom entries

**Reported bugs**

- Crashes when adding new foods
- Inability to access previous day's entries
- Inconsistent nutrition data measurements

**Requested features**

- Ability to edit custom food entries
- More advanced nutrition tracking options
- Personalized daily macro goals
- Improved barcode scanning reliability
- Expanded food database


## Frequently asked questions

### Is 21 Day Container Tracker free?

21 Day Container Tracker is free to download, with in-app purchases available.

### Is Macro Sync free?

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

### Which has better reviews, 21 Day Container Tracker or Macro Sync?

21 Day Container Tracker is rated higher. 21 Day Container Tracker averages 4.7 out of 5 from 510 ratings, while Macro Sync averages 4.5 from 602 ratings.

### Do 21 Day Container Tracker or Macro Sync have ads?

Neither 21 Day Container Tracker nor Macro Sync shows ads.

### Which is updated more often, 21 Day Container Tracker or Macro Sync?

21 Day Container Tracker ships an update every 3 weeks, and Macro Sync every 4 days. Most recently, 21 Day Container Tracker was updated on October 2, 2026 and Macro Sync on October 12, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*