# Recursive vs o

The clearest difference is price: o at Free against Recursive's $2.99. o also leads on in-app purchases (none vs 3) and review sentiment (100% vs 71%). Recursive's advantage is ratings volume (28 vs 3). On rating, update cadence, ads and device support there is nothing between them.

o is free to download; Recursive costs $2.99 up front. Recursive sells 3 one-off in-app purchases. o asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for Recursive against 5.0 for o. That said, the two scores are not equally well evidenced: Recursive has 28 ratings behind it against 3, so its average is the more settled of the two. Written reviews are what separate them: 71% of Recursive's written reviews are positive against 100% of o's.

Recursive ships an update every 4 days, o every 5 days. The most recent releases landed on August 29, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Recursive | o |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [4.9 (28 ratings)](https://appshunter.io/ios/app/recursive-programming-puzzles/id1550504475/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/o-o-o/id6443790066/reviews)** |
| Number of ratings | **28** | 3 |
| Positive reviews | 71.4% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 5 days |
| Monetization | Paid | **Free** |
| Size | 4 MB | 247 MB |
| Requires iOS | 14.0 | **11.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kidori](https://appshunter.io/developer/1550451304) | [Play XD Ltd.](https://appshunter.io/developer/1649283052) |

## What reviewers say

### Recursive

[App page](https://appshunter.io/ios/app/recursive-programming-puzzles/id1550504475)

A challenging puzzle game where you guide robots to collect gems by creating simple programs. Master recursion and logic with a minimalistic, easy-to-learn language and diverse level elements.

**Highlights:** Learn a simple programming language, Solve puzzles with robots and gems, Master recursion concepts, Explore diverse level elements, Challenging, hard puzzles

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 10 hint credits | $0.99 | one-time |
| 20 hint credits | $1.99 | one-time |
| 40 hint credits | $2.99 | one-time |


### o

[App page](https://appshunter.io/ios/app/o-o-o/id6443790066)

A tactical turning strategy game where players rotate discs to chain colors and clear lines for high scores. Earn perks like Rewind and Bombs to enhance gameplay. Designed with minimalist aesthetics and a calming soundtrack, it offers a challenging yet relaxing experience.

**Highlights:** Disc rotation for color chaining, Perk system for enhanced gameplay, Minimalist design and ambient soundtrack, Leaderboard challenges, Achievement system

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Recursive free?

Recursive costs $2.99, and also offers in-app purchases.

### Is o free?

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

### Which has better reviews, Recursive or o?

o is rated higher. Recursive averages 4.9 out of 5 from 28 ratings, while o averages 5.0 from 3 ratings.

### Do Recursive or o have ads?

Neither Recursive nor o shows ads.

### Which is updated more often, Recursive or o?

Recursive ships an update every 4 days, and o every 5 days. Most recently, Recursive was updated on August 29, 2026 and o on September 13, 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.*