# Observation vs Fellows

Observation and Fellows are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Observation | Fellows |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Size | 80 MB | 42 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Observation International](https://appshunter.io/developer/1464543487) | [Camille Charton](https://appshunter.io/developer/1502156052) |

## What reviewers say

### Observation

[App page](https://appshunter.io/ios/app/observation/id6446407612)

**Features:** Vision Pro support

**In-app purchases:** none


### Fellows

[App page](https://appshunter.io/ios/app/fellows-aide-memoire/id6762631534)

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

**In-app purchases:** none


## Frequently asked questions

### Is Observation free?

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

### Is Fellows free?

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

### Do Observation or Fellows have ads?

Neither Observation nor Fellows shows ads.

### Which is updated more often, Observation or Fellows?

Observation ships an update every 2 weeks, and Fellows every 2 weeks. Most recently, Observation was updated on November 3, 2026 and Fellows 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.*