# Surd vs Sourdough Tracker

The clearest difference is in-app purchases: Surd at none against Sourdough Tracker's 4. Sourdough Tracker's advantage is iOS requirement (17.6 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Sourdough Tracker sells 4 in-app purchases, starting at $4.99 per month. Surd asks for nothing beyond the download.

## The numbers

| Metric | Surd | Sourdough Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sourdough-tracker-crust/id6758654537/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 6 days |
| Monetization | — | Freemium |
| Size | 41 MB | 18 MB |
| Requires iOS | 26.0 | **17.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Mark Stoumann](https://appshunter.io/developer/1781763312) | [Denis Kulkov](https://appshunter.io/developer/1867205516) |

## What reviewers say

### Surd

[App page](https://appshunter.io/ios/app/surd/id6755841368)

**In-app purchases:** none


### Sourdough Tracker

[App page](https://appshunter.io/ios/app/sourdough-tracker-crust/id6758654537)

Easily manage your sourdough starters with feeding schedules and reminders. Track feeding history, add custom starters, and receive push notifications to ensure your starters stay healthy and active.

**Highlights:** Manage multiple starters, One-tap feeding log, Next feeding countdown timer, Push notification reminders, Feeding history log, Pause starter activity

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $4.99 | per month |
| Weekly | $6.99 | per 7 days |
| Yearly | $14.99 | per year |
| Lifetime | $19.99 | one-time |


## Frequently asked questions

### Is Surd free?

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

### Is Sourdough Tracker free?

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

### Do Surd or Sourdough Tracker have ads?

Neither Surd nor Sourdough Tracker shows ads.

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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.*