# Calflora Observer Pro vs Mushroom Observer

The clearest difference is review sentiment: Calflora Observer Pro at 100% against Mushroom Observer's 0%. Mushroom Observer's advantage is update cadence (fortnightly vs every 3 months) and iOS requirement (13.4 vs 15.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Calflora Observer Pro ships an update every 3 months, Mushroom Observer fortnightly. The most recent releases landed on September 25, 2026 and August 27, 2026 respectively.

## The numbers

| Metric | Calflora Observer Pro | Mushroom Observer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/calflora-observer-pro/id1199907272/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | Free | Free |
| Size | 6 MB | 25 MB |
| Requires iOS | 15.0 | **13.4** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Calflora Database](https://appshunter.io/developer/605784321) | [Mushroom Observer, Inc.](https://appshunter.io/developer/1585728906) |

## What reviewers say

### Calflora Observer Pro

[App page](https://appshunter.io/ios/app/calflora-observer-pro/id1199907272)

Record observations of wild plants in California with photos, GPS, and notes. Upload your findings to the Calflora.org website to contribute to botanical data. Essential tips are available within the app.

**Highlights:** Record wild plant observations, Include photos and GPS coordinates, Add notes and other information, Upload data to Calflora.org, Access essential tips within the app

**Features:** macOS Compatibility

**In-app purchases:** none


### Mushroom Observer

[App page](https://appshunter.io/ios/app/mushroom-observer/id1585728694)

Document fungi discoveries directly from your mobile device. Record detailed observations and contribute to a community-driven database of fungal life. Ideal for naturalists and researchers documenting specimens in the field.

**Highlights:** Record fungi observations, Document field discoveries, Contribute to a database, Mobile specimen recording, Fungal life documentation

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Calflora Observer Pro free?

Calflora Observer Pro is free to download, with no in-app purchases.

### Is Mushroom Observer free?

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

### Do Calflora Observer Pro or Mushroom Observer have ads?

Neither Calflora Observer Pro nor Mushroom Observer shows ads.

### Which is updated more often, Calflora Observer Pro or Mushroom Observer?

Calflora Observer Pro ships an update every 3 months, and Mushroom Observer fortnightly. Most recently, Calflora Observer Pro was updated on September 25, 2026 and Mushroom Observer on August 27, 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.*