# Caltopia vs Fastum

The clearest difference is rating: Fastum at 5.0 against Caltopia's 4.5. Fastum also leads on review sentiment (100% vs 86%) and monetization model (free with in-app purchases vs paid). Caltopia's advantage is ads (none vs shown). On price, ratings volume, update cadence and in-app purchases there is nothing between them.

Both are free to download. Caltopia sells 2 in-app purchases, starting at $1.99 per month and Fastum sells 2 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

Fastum holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 10 and 14 respectively. Written reviews point the same way: 86% of Caltopia's written reviews are positive against 100% of Fastum's.

Caltopia ships an update every 11 days, Fastum weekly. The most recent releases landed on November 9, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Caltopia | Fastum |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (10 ratings)](https://appshunter.io/ios/app/caltopia-calorie-tracker/id6769532300/reviews) | **[5.0 (14 ratings)](https://appshunter.io/ios/app/fastum-fasting-timer-and-stages/id6787239004/reviews)** |
| Number of ratings | 10 | **14** |
| Positive reviews | 85.7% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 11 days | **Weekly** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 11 MB | 57 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 12+ | 12+ |
| Developer | [COLE SHANE WILLIAMS](https://appshunter.io/developer/1896666136) | [Yurii Moskviak](https://appshunter.io/developer/6787239006) |

## What reviewers say

### Caltopia

[App page](https://appshunter.io/ios/app/caltopia-calorie-tracker/id6769532300)

This app offers private, offline calorie and macro tracking with an on-device AI coach for personalized insights and recipes. It supports voice logging, intermittent fasting, and GLP-1 tracking, with data securely stored on your device. Import data from other services and export your logs in various formats.

**Highlights:** Offline calorie and macro tracking, On-device AI coach for insights and recipes, Voice logging and nutrition label OCR, Intermittent fasting timer, GLP-1 tracking, Data import from MyFitnessPal, Adaptive calorie and macro targets

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Caltopia Pro | $1.99 | per month |
| Caltopia Unlock | $19.99 | one-time |


### Fastum

[App page](https://appshunter.io/ios/app/fastum-fasting-timer-and-stages/id6787239004)

This app helps users track their intermittent fasting journey with a simple, intuitive interface. It monitors your fast, logs meals and water intake, and provides insights into your body's metabolic stages. Integrates with health platforms for a comprehensive overview.

**Highlights:** One-tap fasting start, Timed and open fast modes, Metabolic stage notifications, Water and weight tracking, Meal and macro logging, Apple Health integration, Home screen widget

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fastum Pro Monthly | $7.99 | per month |
| Fastum Pro Annual | $49.99 | per year |


## Frequently asked questions

### Is Caltopia free?

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

### Is Fastum free?

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

### Which has better reviews, Caltopia or Fastum?

Fastum is rated higher. Caltopia averages 4.5 out of 5 from 10 ratings, while Fastum averages 5.0 from 14 ratings.

### Do Caltopia or Fastum have ads?

Fastum shows ads; Caltopia does not.

### Which is updated more often, Caltopia or Fastum?

Caltopia ships an update every 11 days, and Fastum weekly. Most recently, Caltopia was updated on November 9, 2026 and Fastum on October 31, 2026.

---

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