# Simple Fasting Tracker vs swiftCal AI Calorie Estimation

The clearest difference is update cadence: swiftCal AI Calorie Estimation at every 5 days against Simple Fasting Tracker's fortnightly. Simple Fasting Tracker's advantage is device support (4 vs 1) and iOS requirement (15.0 vs 17). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Simple Fasting Tracker sells 6 in-app purchases, starting at $4.99 per 7 days and swiftCal AI Calorie Estimation sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Simple Fasting Tracker ships an update fortnightly, swiftCal AI Calorie Estimation every 5 days. The most recent releases landed on September 24, 2026 and August 29, 2026 respectively.

## The numbers

| Metric | Simple Fasting Tracker | swiftCal AI Calorie Estimation |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (60 ratings)](https://appshunter.io/ios/app/simple-fasting-tracker/id6739862459/reviews)** | — |
| Number of ratings | **60** | — |
| Positive reviews | 77.8% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 5 days** |
| Monetization | Freemium | — |
| Size | 41 MB | 49 MB |
| Requires iOS | **15.0** | 17 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Mamta Shah](https://appshunter.io/developer/1688127666) | [Alper Beser](https://appshunter.io/developer/1001318941) |

## What reviewers say

### Simple Fasting Tracker

[App page](https://appshunter.io/ios/app/simple-fasting-tracker/id6739862459)

Easily track your intermittent fasting journey with personalized schedules, goal setting, and progress monitoring. Syncs with Apple Watch and HealthKit for seamless data management. Offers detailed analytics to optimize your fasting.

**Highlights:** Quick fast logging, Customizable fasting schedules, Real-time progress tracking, Track weight and body fat, Personalized fasting analytics, Apple Watch and HealthKit sync, Widgets for quick access

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly- Intermittent fasting | $4.99 | per 7 days |
| Monthly - Intermittent fasting | $9.99 | per month |
| Year Promo - Fasting Tracker | $14.99 | per year |
| Yearly - Intermittent Fasting | $24.99 | per year |
| Yearly - Intermittent fasting | $24.99 | per year |
| Lifetime - Fasting Tracker | $49.99 | one-time |


### swiftCal AI Calorie Estimation

[App page](https://appshunter.io/ios/app/swiftcal-ai-calorie-estimation/id6742362755)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| swiftCal 1 Month Subscription | $2.99 | per month |
| swiftCal 6 Months Subscription | $14.99 | per 6 months |
| swiftCal Yearly Subscription | $19.99 | per year |


## Frequently asked questions

### Is Simple Fasting Tracker free?

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

### Is swiftCal AI Calorie Estimation free?

swiftCal AI Calorie Estimation is free to download, with in-app purchases available.

### Do Simple Fasting Tracker or swiftCal AI Calorie Estimation have ads?

Neither Simple Fasting Tracker nor swiftCal AI Calorie Estimation shows ads.

### Which is updated more often, Simple Fasting Tracker or swiftCal AI Calorie Estimation?

Simple Fasting Tracker ships an update fortnightly, and swiftCal AI Calorie Estimation every 5 days. Most recently, Simple Fasting Tracker was updated on September 24, 2026 and swiftCal AI Calorie Estimation on August 29, 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.*