# Dienos vs Fathomly

The clearest difference is in-app purchases: Dienos at none against Fathomly's 3. Fathomly's advantage is device support (3 vs 1). On price, update cadence, ads and iOS requirement there is nothing between them.

Both are free to download. Fathomly sells 3 in-app purchases, starting at $2.99 per 7 days. Dienos asks for nothing beyond the download.

Dienos ships an update monthly, Fathomly every 3 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Dienos | Fathomly |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/fathomly-learn-by-doing/id6800842023/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Size | 40 MB | 12 MB |
| Requires iOS | 16.4 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [MB Olten Technologies](https://appshunter.io/developer/1896771771) | [jake green](https://appshunter.io/developer/1845576374) |

## What reviewers say

### Dienos

[App page](https://appshunter.io/ios/app/dienos/id6786348354)

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

**In-app purchases:** none


### Fathomly

[App page](https://appshunter.io/ios/app/fathomly-learn-by-doing/id6800842023)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fathomly Scholar | $2.99 | per 7 days |
| Fathomly Scholar | $9.99 | per month |
| Fathomly Scholar | $79.99 | per year |


## Frequently asked questions

### Is Dienos free?

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

### Is Fathomly free?

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

### Do Dienos or Fathomly have ads?

Neither Dienos nor Fathomly shows ads.

### Which is updated more often, Dienos or Fathomly?

Dienos ships an update monthly, and Fathomly every 3 weeks. Most recently, Dienos was updated on October 24, 2026 and Fathomly on October 25, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*