# Fathom・AI Note Taker vs CO2 Calculator

The clearest difference is ads: Fathom・AI Note Taker at none against CO2 Calculator's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Fathom・AI Note Taker sells 8 in-app purchases, starting at $5.99 per 7 days and CO2 Calculator sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Fathom・AI Note Taker ships an update every 3 weeks, CO2 Calculator every 4 weeks. The most recent releases landed on October 25, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Fathom・AI Note Taker | CO2 Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/fathomai-note-taker/id6791170892/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 4 weeks |
| Monetization | Subscription | — |
| Size | 37 MB | 7 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Aura AI Labs](https://appshunter.io/developer/6791170894) | [Levin David Schwab](https://appshunter.io/developer/1896432297) |

## What reviewers say

### Fathom・AI Note Taker

[App page](https://appshunter.io/ios/app/fathomai-note-taker/id6791170892)

This AI-powered tool transforms audio recordings of meetings into searchable text, detailed notes, and concise summaries. It allows for translation, question-answering about past conversations, and easy export of information. Stay organized and recall key details effortlessly.

**Highlights:** Record meetings and conversations, Generate transcripts and notes automatically, Create AI summaries with adjustable detail, Translate notes into multiple languages, Search across notes and transcripts, Ask questions about past meetings, Export notes as TXT or PDF

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fаthоm: AI Notetaker | $5.99 | per 7 days |
| AI Note | $9.99 | per month |
| Record meetings | $9.99 | per 7 days |
| Turn recordings into transcripts | $11.99 | per 7 days |
| Generate AI summaries | $11.99 | per 7 days |
| Turn recordings | $19.99 | per month |
| Translate transcripts | $19.99 | per month |
| Copy, share, or export your notes | $69.99 | per year |


### CO2 Calculator

[App page](https://appshunter.io/ios/app/co2-calculator-planted-tank/id6796387320)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CO2Scape Pro | $5.99 | one-time |


## Frequently asked questions

### Is Fathom・AI Note Taker free?

Fathom・AI Note Taker is free to download, with in-app purchases available.

### Is CO2 Calculator free?

CO2 Calculator is free to download, with in-app purchases available.

### Do Fathom・AI Note Taker or CO2 Calculator have ads?

CO2 Calculator shows ads; Fathom・AI Note Taker does not.

### Which is updated more often, Fathom・AI Note Taker or CO2 Calculator?

Fathom・AI Note Taker ships an update every 3 weeks, and CO2 Calculator every 4 weeks. Most recently, Fathom・AI Note Taker was updated on October 25, 2026 and CO2 Calculator on October 29, 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.*