# Circle vs ki

The clearest difference is rating: Circle at 4.3 against ki's 3.0. Circle also leads on ratings volume (5.5K vs 30) and review sentiment (43% vs 26%). ki's advantage is ads (none vs shown) and iOS requirement (8.0 vs 12.0). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Both are free to download. Circle sells 5 one-off in-app purchases and ki sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Circle holds the better App Store score, 4.3 against 3.0. That said, the two scores are not equally well evidenced: Circle has 5.5K ratings behind it against 30, so its average is the more settled of the two. Written reviews point the same way: 43% of Circle's written reviews are positive against 26% of ki's.

Circle ships an update every 2 months, ki every 4 months. The most recent releases landed on October 6, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Circle | ki |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (5.5K ratings)](https://appshunter.io/ios/app/circle/id911152486/reviews)** | [3.0 (30 ratings)](https://appshunter.io/ios/app/ki/id972946610/reviews) |
| Number of ratings | **5.5K** | 30 |
| Positive reviews | **42.9% of reviews** | 25.6% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 324 MB | 13 MB |
| Requires iOS | 12.0 | **8.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Ketchapp](https://appshunter.io/developer/528065807) | [General Adaptive Apps Pty Ltd](https://appshunter.io/developer/937589555) |

## What reviewers say

### Circle

[App page](https://appshunter.io/ios/app/circle/id911152486)

Guide a jumping circle to avoid a dangerous line. Test your reflexes and see how far you can progress in this simple yet challenging arcade game. Compete for the highest score.

**Highlights:** Tap to jump, Avoid the line, Endless gameplay, Score tracking, Challenging reflexes

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 400 Diamonds | $0.99 | one-time |
| Remove Ads | $1.99 | one-time |
| 1000 Diamonds | $1.99 | one-time |
| 3000 Diamonds | $4.99 | one-time |
| 5000 Diamonds | $6.99 | one-time |

**What reviewers like**

- 🚀 Addictive gameplay
- 👍 Simple and fun concept
- 🎨 Visually appealing circles
- 💎 Earning diamonds is rewarding

**What reviewers complain about**

- 🔍 Challenges are inaccurate/glitchy
- 📢 Excessive and intrusive ads
- 🐛 Frequent crashes and glitches
- 🕹️ Unresponsive controls and lag
- 🔄 Repetitive gameplay with lack of updates

**Reported bugs**

- Diamonds not counting properly in challenges
- Game screen not fitting properly on newer devices
- Tapping not registering correctly

**Requested features**

- More race levels and challenges
- Ability to customize circles
- Option to play own music
- Pause button during gameplay


### ki

[App page](https://appshunter.io/ios/app/ki/id972946610)

Test your timing and reflexes in this challenging arcade game. Tap the screen precisely at each turn to navigate increasingly difficult levels. Compete for high scores and earn medals.

**Highlights:** Precise tap-based controls, Progressively challenging levels, Leaderboard and medal system, 100 unique levels, Replay passed levels, Skip difficult levels

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Skip Level | $0.99 | one-time |
| Remove Ads | $1.99 | one-time |
| Unlock All Levels | $3.99 | one-time |

**What reviewers like**

- 🎮 Addictive and engaging gameplay
- 💡 Innovative concept with unique mechanics
- 🧠 Tests reflexes and patience effectively
- 🔥 Fun once mechanics are understood
- ⭐ Challenging difficulty appeals to some players

**What reviewers complain about**

- 🐛 Frequent glitches and crashes
- ❌ Unclear instructions and poor onboarding
- ⚡ Inconsistent ball speed mechanics
- 😤 Extremely difficult difficulty curve
- 🔴 Tutorial overlay blocks gameplay

**Reported bugs**

- Tutorial instruction box stays on screen blocking gameplay
- Game crashes frequently during play
- Ball moves erratically sideways off the line
- Fails occur while ball is still moving
- Level 1 unplayable due to tutorial overlay

**Requested features**

- Clear and detailed gameplay instructions
- Consistent and predictable speed mechanics
- Better tutorial system that doesn't block gameplay
- Adjustable difficulty levels
- Clearer visual feedback for turns


## Frequently asked questions

### Is Circle free?

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

### Is ki free?

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

### Which has better reviews, Circle or ki?

Circle is rated higher. Circle averages 4.3 out of 5 from 5.5K ratings, while ki averages 3.0 from 30 ratings.

### Do Circle or ki have ads?

Circle shows ads; ki does not.

### Which is updated more often, Circle or ki?

Circle ships an update every 2 months, and ki every 4 months. Most recently, Circle was updated on October 6, 2026 and ki on October 5, 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.*