# Circle.ooo vs Fydo Dog

Circle.ooo and Fydo Dog 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.

Circle.ooo ships an update weekly, Fydo Dog every 2 weeks. The most recent releases landed on October 7, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Circle.ooo | Fydo Dog |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 weeks |
| Size | 132 MB | 139 MB |
| Requires iOS | 14.0 | **13.4** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Noww, Inc.](https://appshunter.io/developer/1275092398) | [Thomas Rielly](https://appshunter.io/developer/1848545624) |

## What reviewers say

### Circle.ooo

[App page](https://appshunter.io/ios/app/circleooo/id1611956542)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### Fydo Dog

[App page](https://appshunter.io/ios/app/fydo-dog/id6754504233)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Circle.ooo free?

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

### Is Fydo Dog free?

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

### Do Circle.ooo or Fydo Dog have ads?

Neither Circle.ooo nor Fydo Dog shows ads.

### Which is updated more often, Circle.ooo or Fydo Dog?

Circle.ooo ships an update weekly, and Fydo Dog every 2 weeks. Most recently, Circle.ooo was updated on October 7, 2026 and Fydo Dog on October 10, 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.*