# Calidus vs Fastingkit

The clearest difference is in-app purchases: Calidus at none against Fastingkit's 3. Calidus also leads on ads (none vs shown) and iOS requirement (17.0 vs 26.0). Fastingkit's advantage is update cadence (every 2 weeks vs every 6 weeks). On price and device support there is nothing between them.

Both are free to download. Fastingkit sells 3 in-app purchases, starting at $0.99 per month. Calidus asks for nothing beyond the download.

Calidus ships an update every 6 weeks, Fastingkit every 2 weeks. The most recent releases landed on October 9, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Calidus | Fastingkit |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 2 weeks** |
| Size | 14 MB | 36 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [MANEO HOUSE LC](https://appshunter.io/developer/1896179257) | [Rashmi Chaudhari](https://appshunter.io/developer/6802464521) |

## What reviewers say

### Calidus

[App page](https://appshunter.io/ios/app/calidus-calorie-tracker/id6778625160)

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

**In-app purchases:** none


### Fastingkit

[App page](https://appshunter.io/ios/app/fastingkit-fasting-tracker/id6797449870)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fastingkit Pro | $0.99 | per month |
| Fastingkit Pro | $9.99 | per year |
| Fastingkit Pro | $29.99 | one-time |


## Frequently asked questions

### Is Calidus free?

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

### Is Fastingkit free?

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

### Do Calidus or Fastingkit have ads?

Fastingkit shows ads; Calidus does not.

### Which is updated more often, Calidus or Fastingkit?

Calidus ships an update every 6 weeks, and Fastingkit every 2 weeks. Most recently, Calidus was updated on October 9, 2026 and Fastingkit on October 8, 2026.

---

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