Fathom・AI Note Taker vs CO2 Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Fathom・AI Note Taker
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.
- 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
Read full descriptionHide full description
Turn meetings into clear notes, summaries, and follow-ups with an AI notetaker designed to make every conversation easier to capture and review. Record audio, turn it into searchable text, translate important parts, and get quick answers from your past meetings without digging through everything manually. Key Features: - Record meetings and conversations with one tap in your selected meeting language - Turn recordings into transcripts, notes, and next steps automatically - Generate AI summaries with adjustable detail levels for different needs - Translate transcripts and notes into multiple languages inside the app - Search across notes and full transcripts to find key moments faster - Ask questions about past meetings and track important topics with keyword alerts - Copy, share, or export your notes and summaries as TXT or PDF Stay more organized after every meeting with an AI note app built for faster capture, clearer follow-up, and easier sharing. Disclaimer: FATHOM and related brand assets are used by NOVI NASLOV d.o.o. under authorization granted by Fathom Video Inc. pursuant to an applicable licensing agreement. All associated trademarks, logos, and brand elements remain the property of their respective rights holder. Payment will be charged to the credit card connected to your iTunes Account when you confirm the initial subscription purchase. Subscriptions automatically renew unless auto-renew is turned off at least 24-hours before the end of the current subscription period. Your account will be charged for renewal within 24-hours prior to the end of the current period, and the cost of the renewal will be identified. You may manage your subscription and auto-renewal may be turned off by going to your Account Settings after the purchase. Any unused portion of a free trial period, if offered, will be forfeited when you purchase a subscription, where applicable. By using this app, you consent to our Privacy Policy and Terms of Use: https://docs.google.com/document/d/11bloJbs4siwe-66HJJm-NW0XJRur-57TA_1wftLqIo8/edit?usp=sharing https://docs.google.com/document/d/10X3lw71CxLjxi6KnSwwuatZ14-3fklq1dmfYyUwPpOs/edit?usp=sharing
CO2 Calculator
Read full descriptionHide full description
Most CO2 charts hand you one confident number. That number is wrong more often than the hobby admits. This calculator does two things differently. It always returns a range instead of a bare value, and it locks the calculation when your water chemistry breaks the method it relies on. WHY A RANGE INSTEAD OF A NUMBER Nobody in this hobby measures dissolved CO2 directly. It is inferred from carbonate hardness, pH and temperature, and every one of those inputs carries error. A pH reading off by 0.1 shifts the result by about 26 percent. A KH kit that resolves only whole degrees can sit half a degree off at 3 dKH, worth another 17 percent. The app carries the resolution of your actual test through the equation and reports "22 to 31 ppm" instead of "26 ppm". The band is the honest answer. A single value claims a precision your test kit never had. WHEN THE APP REFUSES TO ANSWER The KH/pH method assumes carbonate is the only thing buffering your water. Peat, aquasoil, phosphate buffers and many pH-down products break that assumption: they hold pH down without contributing to KH, and the formula reads that as dissolved CO2 that is not in the tank. In documented soil setups the classic table runs high by a factor of 12 to 19. So the app asks what is in your tank first, locks the KH/pH result when the preconditions fail, and sends you to the drop checker or a delta-pH run instead. A locked screen helps you more than a confident 90 ppm on a tank actually sitting near 5 ppm. THE DELTA-pH METHOD, NOW GUIDED Drive the CO2 out of a water sample, then measure it again. The difference between degassed pH and tank pH gives you CO2 without any KH value at all, because carbonate hardness appears on both sides of the ratio and cancels out. This is the method that still holds on aquasoil and peat, and the app now runs the step it depends on: pick an air stone or a glass left standing, start the timer, and it tells you when the sample is ready. It refuses a baseline that reads below the tank, and says so when your two readings sit closer together than your pH method can resolve. THE PREFACTOR CORRECTION The CO2 table copied across every forum uses a fixed prefactor. That prefactor is temperature dependent. Across the usual temperature window of a planted tank, the common table therefore reads 10 to 21 percent low. This app derives the coefficient for the temperature you actually run. DROP CHECKER A blue to green to yellow scale referenced to the usual 4 dKH solution, including the part most guides leave out: a drop checker lags real conditions by one to two hours. It shows where your CO2 was, not where it is. WHAT THIS APP DOES NOT DO - It does not measure anything. Your test kit or probe does the measuring. - It does not replace water tests. - It is not a fish or plant database. - It does not calculate medication doses. WITHOUT PAYING All three methods, the error bands, the locks, the guided degassing, the drop checker scale with its reference recipe, the tools for tank volume, hardness units and dosing, and pH sessions across the photoperiod with the curve and the drift reading. One tank, with the last 30 saved readings. CO2SCAPE PRO, 6.99 EUR, ONE PURCHASE - Unlimited tanks instead of one. Each tank keeps its own hardness, temperature, substrate declarations, target range and readings. - Unlimited history instead of the last 30 readings - Reminders at your chosen interval while a session runs - CSV export of the readings of the tank you are viewing Pro is a single purchase, not a subscription, and it works with Family Sharing. It extends the record keeping, not the chemistry. YOUR TANK DATA STAYS ON DEVICE Your tank data stays on your device. No login or sync. Google loads third-party ads online; Pro removes them. Apple handles purchases and restores. Recommendations for our other apps load online. Their views and taps are counted as daily totals, without personal profiles or user/device identifiers. See our privacy policy.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Fathom・AI Note Taker | CO2 Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 3 weeks — better | Every 4 weeks |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Subscription | — |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 37 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Aura AI Labs | Levin David Schwab |
In-app purchases
Fathom・AI Note Taker
- Fаthоm: AI Notetaker$5.997 Days
- AI Note$9.991 Month
- Record meetings2 variants$9.997 Days
Show 5 moreShow fewer
- Turn recordings into transcripts$11.997 Days
- Generate AI summaries$11.997 Days
- Turn recordings$19.991 Month
- Translate transcripts$19.991 Month
- Copy, share, or export your notes$69.991 Year
CO2 Calculator
- CO2Scape Pro$5.99
Questions
Is Fathom・AI Note Taker free?
Is CO2 Calculator free?
Do Fathom・AI Note Taker or CO2 Calculator have ads?
Which is updated more often, Fathom・AI Note Taker or CO2 Calculator?
Other comparisons















