# Circa vs C

The clearest difference is in-app purchases: Circa at none against C's 2. C's advantage is update cadence (every 5 days vs every 3 weeks) and iOS requirement (16.0 vs 18.0). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. C sells 2 in-app purchases, starting at $4.99 per month. Circa asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Circa against 5.0 for C. Both are backed by a comparable volume of ratings — 2 and 5 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Circa ships an update every 3 weeks, C every 5 days. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Circa | C |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/circa-sleep-and-bedtime-routine/id6761396508/reviews) | [5.0 (5 ratings)](https://appshunter.io/ios/app/c-rex-gym-workout-tracker/id6764214059/reviews) |
| Number of ratings | 2 | **5** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Monetization | **Free** | Freemium |
| Size | 11 MB | 125 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [jean-baptiste delcros](https://appshunter.io/developer/1727119809) | [Jerry Kwong](https://appshunter.io/developer/1889200960) |

## What reviewers say

### Circa

[App page](https://appshunter.io/ios/app/circa-sleep-and-bedtime-routine/id6761396508)

Build a calmer bedtime routine and understand your sleep patterns with private insights from Apple Health. Plan daily habits, reduce digital distractions before bed, and track sleep trends securely on your device.

**Highlights:** Personalized daily routines, Digital distraction blocking, Private sleep insights, Circadian schedule visualization, Product discovery for sleep, Apple Health integration

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

**In-app purchases:** none


### C

[App page](https://appshunter.io/ios/app/c-rex-gym-workout-tracker/id6764214059)

This app verifies gym check-ins with GPS to track real progress and build streaks. It allows users to log workouts, compete on leaderboards, and connect with friends and local gym communities. Premium features offer advanced analytics and customization.

**Highlights:** GPS-verified gym check-ins, Workout logging (exercises, sets, reps, weight), Streaks and XP for gym attendance, Monthly gym leaderboards, Social features: follow friends, group challenges, Muscle group identification, Rest timer with Lock Screen Live Activities

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| C-Rex Monthly Subscription | $4.99 | per month |
| C-Rex Yearly Subscription | $49.99 | per year |


## Frequently asked questions

### Is Circa free?

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

### Is C free?

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

### Which has better reviews, Circa or C?

Circa and C are both rated 5.0 out of 5 on the App Store, from 2 and 5 ratings respectively.

### Do Circa or C have ads?

Neither Circa nor C shows ads.

### Which is updated more often, Circa or C?

Circa ships an update every 3 weeks, and C every 5 days. Most recently, Circa was updated on November 5, 2026 and C 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.*