# Carbon vs Tidemark

The clearest difference is ratings volume: Carbon at 8.2K against Tidemark's 1. Carbon also leads on chart position (#103 vs unranked). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Carbon sells 9 in-app purchases, starting at $11.99 per month and Tidemark sells 3 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Tidemark holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Carbon has 8.2K ratings behind it against 1, so its average is the more settled of the two.

Carbon ships an update weekly, Tidemark every 9 days. The most recent releases landed on November 10, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Carbon | Tidemark |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (8.2K ratings)](https://appshunter.io/ios/app/carbon-macro-coach-and-tracker/id1437820611/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/tidemark-hydration-guide/id6772892443/reviews)** |
| Number of ratings | **8.2K** | 1 |
| Positive reviews | 79.2% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 9 days |
| Monetization | Free with in-app purchases | Freemium |
| Best chart rank | **#103** | — |
| Size | 105 MB | 4 MB |
| Requires iOS | **16.6** | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Reform LLC](https://appshunter.io/developer/1437820610) | [Sukhleen Kaur](https://appshunter.io/developer/1896281222) |

## What reviewers say

### Carbon

[App page](https://appshunter.io/ios/app/carbon-macro-coach-and-tracker/id1437820611)

**Currently charting:** #103 Top Grossing · Health & Fitness (US App Store)

This app acts as a personalized nutrition coach, helping you track your food intake and weight to adjust your calorie and macro targets. It provides weekly check-ins with clear explanations for any changes made to your plan, supporting various dietary goals like fat loss or muscle gain.

**Highlights:** Adaptive macro coaching, Personalized calorie and macro targets, Weekly weight trend analysis, Flexible calorie planner, Smart food logging with photo recognition, Support for various diet styles

**Features:** macOS Compatibility

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $11.99 | per month |
| Monthly Subscription | $11.99 | per month |
| Monthly Subscription | $11.99 | per month |
| Six Month Subscription | $59.99 | per 6 months |
| Six Month Subscription | $59.99 | per 6 months |
| Six Month Subscription | $59.99 | per 6 months |
| Yearly Subscription | $99.99 | per year |
| Yearly Subscription | $99.99 | per year |
| Yearly Subscription | $99.99 | per year |

**What reviewers like**

- 🚀 Easy to use
- 👍 Flexible and customizable
- 🔍 Accurate food database
- 💡 Helpful coaching and adjustments
- 🤝 Responsive customer support

**What reviewers complain about**

- 🐛 Limited food database for some regions
- 🤔 Strict adherence required for adjustments
- 🤷‍♀️ Lack of exercise tracking integration

**Reported bugs**

- Occasional app crashes or freezes
- Issues with resetting account data

**Requested features**

- Add water intake tracking
- Improve barcode scanning functionality
- Allow more flexibility in macro adjustments
- Integrate with fitness trackers


### Tidemark

[App page](https://appshunter.io/ios/app/tidemark-hydration-guide/id6772892443)

This app helps you stay hydrated by showing you your target water intake level throughout the day. It focuses on guiding your progress rather than logging every sip, making hydration simple and manageable.

**Highlights:** Real-time hydration guidance, Personalized pacing, Track multiple bottles, Daily streaks, Customizable goals, Home screen widgets, Apple Health integration

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tidemark Pro Weekly | $0.99 | per 7 days |
| Tidemark Pro Monthly | $3.99 | per month |
| Tidemark Pro Yearly | $29.99 | per year |


## Frequently asked questions

### Is Carbon free?

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

### Is Tidemark free?

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

### Which has better reviews, Carbon or Tidemark?

Tidemark is rated higher. Carbon averages 4.8 out of 5 from 8.2K ratings, while Tidemark averages 5.0 from 1 ratings.

### Do Carbon or Tidemark have ads?

Neither Carbon nor Tidemark shows ads.

### Which is updated more often, Carbon or Tidemark?

Carbon ships an update weekly, and Tidemark every 9 days. Most recently, Carbon was updated on November 10, 2026 and Tidemark 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.*