# IV Observation vs Gemini Notebook

The clearest difference is update cadence: Gemini Notebook at weekly against IV Observation's every 2 weeks. Gemini Notebook also leads on chart position (#37 vs unranked). IV Observation's advantage is iOS requirement (13.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. IV Observation sells 4 one-off in-app purchases and Gemini Notebook sells 15 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

IV Observation ships an update every 2 weeks, Gemini Notebook weekly. The most recent releases landed on October 1, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | IV Observation | Gemini Notebook |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.9 (63K ratings)](https://appshunter.io/ios/app/gemini-notebook/id6737527615/reviews)** |
| Number of ratings | — | **63K** |
| Positive reviews | — | 78.8% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Best chart rank | — | **#37** |
| Size | 67 MB | 211 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 12+ |
| Developer | [inspectionviewer.com Inc.](https://appshunter.io/developer/1594829999) | [Google](https://appshunter.io/developer/281956209) |

## What reviewers say

### IV Observation

[App page](https://appshunter.io/ios/app/iv-observation/id6449625638)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Economy Pack Report Charges | $1.99 | one-time |
| Pay as you use report charges | $14.99 | one-time |
| IV Observation Economy Pack | $24.99 | one-time |
| IV Observation Unlimited/Month | $99.99 | one-time |


### Gemini Notebook

[App page](https://appshunter.io/ios/app/gemini-notebook/id6737527615)

**Currently charting:** #37 Top Free · Productivity, #111 Top Grossing · Productivity (US App Store)

This AI-powered tool transforms complex information from various sources into clear, understandable insights. It allows users to upload documents, websites, and videos, then ask questions and receive summarized answers with inline citations. Users can also generate podcast-style audio discussions for a different learning experience.

**Highlights:** Upload PDFs, websites, and videos, AI-powered summarization, Ask questions about sources, Inline source citations, Podcast-style audio overviews, Offline access

**In-app purchases (15)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100 GB | $1.99 | per month |
| 200 GB | $2.99 | per month |
| Google AI Plus (400 GB) | $4.99 | per month |
| Google AI Plus (400 GB) | $4.99 | per month |
| Google AI Plus (2 TB) | $9.99 | per month |
| Google AI Pro (5 TB) | $19.99 | per month |
| Google AI Pro (5 TB) | $19.99 | per month |
| 100 GB | $19.99 | per year |
| 5 TB | $24.99 | per month |
| 200 GB | $29.99 | per year |
| Google AI Plus (400 GB) | $49.99 | per year |
| 10 TB | $49.99 | per month |
| Google AI Pro (5 TB) | $199.99 | per year |
| Google AI Pro (2 TB) | $199.99 | per year |
| Google AI Ultra (30 TB) | $249.99 | per month |

**What reviewers like**

- 🚀 Fast and accurate audio summaries
- 👍 Useful for learning and studying
- 🚀 Convenient mobile access
- 👍 Great for on-the-go use

**What reviewers complain about**

- 🐛 Audio volume issues
- 🔍 Missing key features from web version
- 🔍 Lack of customization options
- 🔍 Inconsistent dark mode implementation

**Reported bugs**

- Audio coming through earpiece instead of speaker
- Interactive features not working properly

**Requested features**

- Ability to curate audio summaries
- Sync saved notes from web version
- Add mind maps, study guides, and other advanced features


## Frequently asked questions

### Is IV Observation free?

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

### Is Gemini Notebook free?

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

### Do IV Observation or Gemini Notebook have ads?

Neither IV Observation nor Gemini Notebook shows ads.

### Which is updated more often, IV Observation or Gemini Notebook?

IV Observation ships an update every 2 weeks, and Gemini Notebook weekly. Most recently, IV Observation was updated on October 1, 2026 and Gemini Notebook on October 16, 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.*