# Sourdough Starter Tracker vs S.D Timer Pro

The clearest difference is in-app purchases: S.D Timer Pro at none against Sourdough Starter Tracker's 2. S.D Timer Pro also leads on ads (none vs shown) and update cadence (daily vs every 5 days). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Sourdough Starter Tracker sells 2 one-off in-app purchases. S.D Timer Pro asks for nothing beyond the download.

Sourdough Starter Tracker ships an update every 5 days, S.D Timer Pro daily. The most recent releases landed on October 1, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Sourdough Starter Tracker | S.D Timer Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (25 ratings)](https://appshunter.io/ios/app/sourdough-starter-tracker/id6755709217/reviews)** | — |
| Number of ratings | **25** | — |
| Positive reviews | 88.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 days | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 51 MB | 4 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MyQuietSpot Inc.](https://appshunter.io/developer/1841316087) | [oran kamelgarn](https://appshunter.io/developer/1884948105) |

## What reviewers say

### Sourdough Starter Tracker

[App page](https://appshunter.io/ios/app/sourdough-starter-tracker/id6755709217)

Easily track your sourdough starter's feeding schedule, health, and receive real-time safety alerts. This app offers smart reminders and detailed health insights for home bakers. Enjoy a simple, offline experience with a one-time purchase.

**Highlights:** Log feedings with details, Smart feeding reminders, Real-time safety alerts, Starter health monitoring, Beginner's guide, Feeding calendar and charts, Manage multiple starters

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |
| Premium | $9.99 | one-time |


### S.D Timer Pro

[App page](https://appshunter.io/ios/app/sd-timer-pro/id6760554281)

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

**In-app purchases:** none


## Frequently asked questions

### Is Sourdough Starter Tracker free?

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

### Is S.D Timer Pro free?

S.D Timer Pro is free to download, with no in-app purchases.

### Do Sourdough Starter Tracker or S.D Timer Pro have ads?

Sourdough Starter Tracker shows ads; S.D Timer Pro does not.

### Which is updated more often, Sourdough Starter Tracker or S.D Timer Pro?

Sourdough Starter Tracker ships an update every 5 days, and S.D Timer Pro daily. Most recently, Sourdough Starter Tracker was updated on October 1, 2026 and S.D Timer Pro on September 23, 2026.

---

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