# Sourdough Bread Proofing Timer vs Crumb

The clearest difference is in-app purchases: Sourdough Bread Proofing Timer at none against Crumb's 4. Crumb's advantage is update cadence (every 5 days vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Crumb sells 4 in-app purchases, starting at $2.99 per month. Sourdough Bread Proofing Timer asks for nothing beyond the download.

Sourdough Bread Proofing Timer ships an update every 4 months, Crumb every 5 days. The most recent releases landed on October 28, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | Sourdough Bread Proofing Timer | Crumb |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/crumb-sourdough-bread-reader/id6777581829/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 5 days** |
| Monetization | — | Freemium |
| Size | 6 MB | 20 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Linh Phan Nhat Khanh](https://appshunter.io/developer/1777727575) | [Zenmonkeys Digital LLC](https://appshunter.io/developer/1868802546) |

## What reviewers say

### Sourdough Bread Proofing Timer

[App page](https://appshunter.io/ios/app/sourdough-bread-proofing-timer/id6771844628)

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

**In-app purchases:** none


### Crumb

[App page](https://appshunter.io/ios/app/crumb-sourdough-bread-reader/id6777581829)

This AI-powered companion analyzes your sourdough bread's fermentation, crumb structure, and hydration from a single photo. It provides personalized recommendations for future bakes and tracks your progress in a detailed baking journal. Features include proofing timers, starter health checks, and baking calculators.

**Highlights:** AI crumb analysis for fermentation and structure, Proofing tracker with temperature-aware predictions, Starter coach with feeding logs and health checks, Baking journal to track bakes and progress, Mixing-water calculator, Recipe vault

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Crumb Pro | $2.99 | per month |
| Crumb Pro (Annual) | $19.99 | per year |
| 3 Scans | $0.99 | one-time |
| 15 Scans | $3.99 | one-time |


## Frequently asked questions

### Is Sourdough Bread Proofing Timer free?

Sourdough Bread Proofing Timer is free to download, with no in-app purchases.

### Is Crumb free?

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

### Do Sourdough Bread Proofing Timer or Crumb have ads?

Neither Sourdough Bread Proofing Timer nor Crumb shows ads.

### Which is updated more often, Sourdough Bread Proofing Timer or Crumb?

Sourdough Bread Proofing Timer ships an update every 4 months, and Crumb every 5 days. Most recently, Sourdough Bread Proofing Timer was updated on October 28, 2026 and Crumb on November 1, 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.*