# Fasting Tracker vs Peptide Calculator

The clearest difference is in-app purchases: Peptide Calculator at none against Fasting Tracker's 2. Peptide Calculator also leads on update cadence (every 4 weeks vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Fasting Tracker sells 2 in-app purchases, starting at $2.99 per month. Peptide Calculator asks for nothing beyond the download.

Fasting Tracker ships an update every 2 months, Peptide Calculator every 4 weeks. The most recent releases landed on October 25, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Fasting Tracker | Peptide Calculator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 weeks** |
| Size | 47 MB | 77 MB |
| Requires iOS | **15.1** | 15.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ramazan Erikli](https://appshunter.io/developer/1789625854) | [2784951 Alberta Inc.](https://appshunter.io/developer/1896579158) |

## What reviewers say

### Fasting Tracker

[App page](https://appshunter.io/ios/app/fasting-tracker-fast-timer/id6761269473)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fasting Tracker Premium - Monthly | $2.99 | per month |
| Fasting Tracker Premium - Yearly | $19.99 | per year |


### Peptide Calculator

[App page](https://appshunter.io/ios/app/peptide-calculator-truetide/id6768497591)

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

**In-app purchases:** none


## Frequently asked questions

### Is Fasting Tracker free?

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

### Is Peptide Calculator free?

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

### Do Fasting Tracker or Peptide Calculator have ads?

Neither Fasting Tracker nor Peptide Calculator shows ads.

### Which is updated more often, Fasting Tracker or Peptide Calculator?

Fasting Tracker ships an update every 2 months, and Peptide Calculator every 4 weeks. Most recently, Fasting Tracker was updated on October 25, 2026 and Peptide Calculator on October 15, 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.*