# Viana 2 vs NiblyNotes

The clearest difference is in-app purchases: Viana 2 at none against NiblyNotes's 3. NiblyNotes's advantage is update cadence (every 10 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. NiblyNotes sells 3 one-off in-app purchases. Viana 2 asks for nothing beyond the download.

Viana 2 ships an update every 2 months, NiblyNotes every 10 days. The most recent releases landed on October 29, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Viana 2 | NiblyNotes |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 42.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 10 days** |
| Monetization | Paid | — |
| Size | 19 MB | 20 MB |
| Requires iOS | **17.4** | 18.6 |
| Devices | iPad | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Freie Universitaet Berlin](https://appshunter.io/developer/1031084427) | [PC-Future GmbH](https://appshunter.io/developer/1884718537) |

## What reviewers say

### Viana 2

[App page](https://appshunter.io/ios/app/viana-2/id1554845327)

This app allows users to record and analyze motion from videos. It automatically determines the trajectory, position, and velocity of objects, offering advanced graphing and coordinate system tools for physics education.

**Highlights:** Record and analyze motion from videos, Automatic trajectory, position, and velocity determination, Adjustable video frame rates, Object tracking with marker adjustment, Display up to three graph types simultaneously, New phase diagram types, Real-time coordinate system and graph comparison, Export and import projects

**In-app purchases:** none


### NiblyNotes

[App page](https://appshunter.io/ios/app/niblynotes/id6762114740)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Little Supporter | $0.99 | one-time |
| Middle Supporter | $3.99 | one-time |
| Big Supporter | $8.99 | one-time |


## Frequently asked questions

### Is Viana 2 free?

Viana 2 is free to download, with no in-app purchases.

### Is NiblyNotes free?

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

### Do Viana 2 or NiblyNotes have ads?

Neither Viana 2 nor NiblyNotes shows ads.

### Which is updated more often, Viana 2 or NiblyNotes?

Viana 2 ships an update every 2 months, and NiblyNotes every 10 days. Most recently, Viana 2 was updated on October 29, 2026 and NiblyNotes on October 31, 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.*