# Viavo vs Dinosaur Guide.

The clearest difference is in-app purchases: Viavo at none against Dinosaur Guide.'s 2. Viavo also leads on ads (none vs shown) and iOS requirement (12.0 vs 15.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Dinosaur Guide. sells 2 in-app purchases, starting at $1.99 per month. Viavo asks for nothing beyond the download.

Viavo ships an update monthly, Dinosaur Guide. every 3 weeks. The most recent releases landed on October 9, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Viavo | Dinosaur Guide. |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/dinosaur-guide/id6746718846/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 214 MB | 212 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mazedia](https://appshunter.io/developer/469485636) | [Olga Ivanova](https://appshunter.io/developer/1733570435) |

## What reviewers say

### Viavo

[App page](https://appshunter.io/ios/app/viavo/id6596765229)

**Features:** macOS Compatibility

**In-app purchases:** none


### Dinosaur Guide.

[App page](https://appshunter.io/ios/app/dinosaur-guide/id6746718846)

Explore prehistoric species, fossil discoveries, and scientific classifications offline. This app offers structured profiles with details on size, diet, habitat, and geological periods. Includes learning tools like quizzes and a glossary for enthusiasts and students.

**Highlights:** Dinosaur profiles with classifications, Fossil discovery information, Geological time period details, Offline access, Quiz mode for knowledge testing, Search and category browsing, Favorite dinosaur saving

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| dinosaurs_subscription | $1.99 | per month |
| dinosaurs_by_oliva_donation | $1.99 | one-time |


## Frequently asked questions

### Is Viavo free?

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

### Is Dinosaur Guide. free?

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

### Do Viavo or Dinosaur Guide. have ads?

Dinosaur Guide. shows ads; Viavo does not.

### Which is updated more often, Viavo or Dinosaur Guide.?

Viavo ships an update monthly, and Dinosaur Guide. every 3 weeks. Most recently, Viavo was updated on October 9, 2026 and Dinosaur Guide. on October 15, 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.*