# OKO⁢ vs Perfect Sum

The clearest difference is price: Perfect Sum at Free against OKO⁢'s $3.99. Perfect Sum also leads on rating (5.0 vs 4.0) and update cadence (every 3 days vs every 44 months). OKO⁢'s advantage is ads (none vs shown). On ratings volume, in-app purchases and device support there is nothing between them.

Perfect Sum is free to download; OKO⁢ costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Perfect Sum holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 3 and 2 respectively. Written reviews point the same way: 71% of OKO⁢'s written reviews are positive against 100% of Perfect Sum's.

OKO⁢ ships an update every 44 months, Perfect Sum every 3 days. The most recent releases landed on November 1, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | OKO⁢ | Perfect Sum |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | [4.0 (3 ratings)](https://appshunter.io/ios/app/oko/id524351381/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/perfect-sum/id6477300117/reviews)** |
| Number of ratings | **3** | 2 |
| Positive reviews | 71.4% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 44 months | **Every 3 days** |
| Monetization | Paid | **Ad-supported** |
| Size | 55 MB | 139 MB |
| Requires iOS | 14.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Playables](https://appshunter.io/developer/904930239) | [Benjamin Richy](https://appshunter.io/developer/1636888789) |

## What reviewers say

### OKO⁢

[App page](https://appshunter.io/ios/app/oko/id524351381)

A captivating puzzle game that transforms NASA satellite images into a cosmic visual and auditory experience. Reconstruct images by precisely stopping rotating circular pieces, with increasingly complex patterns and otherworldly soundscapes.

**Highlights:** Hypnotizing puzzle gameplay, NASA satellite imagery, Otherworldly soundscapes, Retina graphics, Increasingly complex patterns

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

**In-app purchases:** none


### Perfect Sum

[App page](https://appshunter.io/ios/app/perfect-sum/id6477300117)

A captivating puzzle game where you strategically place shapes on a numbered board to reach a perfect sum. Unlock new buildings and enjoy stunning visuals and rewarding animations as you progress through increasingly challenging levels.

**Highlights:** Strategic shape placement, Numbered board puzzles, Unlockable buildings, Increasing difficulty levels, Rewarding animations, Stunning visuals

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OKO⁢ free?

OKO⁢ costs $3.99, with no in-app purchases.

### Is Perfect Sum free?

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

### Which has better reviews, OKO⁢ or Perfect Sum?

Perfect Sum is rated higher. OKO⁢ averages 4.0 out of 5 from 3 ratings, while Perfect Sum averages 5.0 from 2 ratings.

### Do OKO⁢ or Perfect Sum have ads?

Perfect Sum shows ads; OKO⁢ does not.

### Which is updated more often, OKO⁢ or Perfect Sum?

OKO⁢ ships an update every 44 months, and Perfect Sum every 3 days. Most recently, OKO⁢ was updated on November 1, 2026 and Perfect Sum on November 4, 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.*