# One By One vs Puzzl3D

The clearest difference is in-app purchases: Puzzl3D at none against One By One's 3. Puzzl3D also leads on ads (none vs shown) and rating (5.0 vs 4.8). One By One's advantage is update cadence (every 2 weeks vs every 6 weeks) and ratings volume (77 vs 7). On price, monetization model, device support and iOS requirement there is nothing between them.

Both are free to download. One By One sells 3 in-app purchases, starting at $1.99 per month. Puzzl3D asks for nothing beyond the download.

Puzzl3D holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: One By One has 77 ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 91% of One By One's written reviews are positive against 100% of Puzzl3D's.

One By One ships an update every 2 weeks, Puzzl3D every 6 weeks. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | One By One | Puzzl3D |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (77 ratings)](https://appshunter.io/ios/app/one-by-one-mental-math/id1555846023/reviews) | **[5.0 (7 ratings)](https://appshunter.io/ios/app/puzzl3d/id6479337783/reviews)** |
| Number of ratings | **77** | 7 |
| Positive reviews | 90.9% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Every 6 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 64 MB | 15 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Brice Brown](https://appshunter.io/developer/1555846025) | [Gwheat Studios LLC](https://appshunter.io/developer/1735637940) |

## What reviewers say

### One By One

[App page](https://appshunter.io/ios/app/one-by-one-mental-math/id1555846023)

Practice arithmetic, algebra, trigonometry, and calculus with a retro-style math game. Level up by solving problems, unlock new challenges, and compete on leaderboards. Enhance your skills with artifacts and strategic upgrades.

**Highlights:** Randomly generated math problems, Leveling system with unlockable content, Practice arithmetic, algebra, trigonometry, and calculus, Retro ASCII art and music style, Leaderboards and achievements, Math artifacts and upgrades, AI battle mode for targeted practice

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Support | $1.99 | per month |
| Yearly Support | $12.99 | per year |
| Lifetime Supporter pass | $19.99 | one-time |


### Puzzl3D

[App page](https://appshunter.io/ios/app/puzzl3d/id6479337783)

Engage your mind with a 3D block puzzle game featuring intricately designed levels. This game challenges spatial reasoning and problem-solving with intuitive controls, offering an engaging experience for all skill levels. Enjoy endless entertainment on the go or at home.

**Highlights:** Intricately designed 3D levels, Challenges spatial reasoning, Enhances problem-solving skills, Intuitive gameplay controls, Engaging experience for all players, Regularly updated with new content

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

**In-app purchases:** none


## Frequently asked questions

### Is One By One free?

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

### Is Puzzl3D free?

Puzzl3D is free to download, with no in-app purchases.

### Which has better reviews, One By One or Puzzl3D?

Puzzl3D is rated higher. One By One averages 4.8 out of 5 from 77 ratings, while Puzzl3D averages 5.0 from 7 ratings.

### Do One By One or Puzzl3D have ads?

One By One shows ads; Puzzl3D does not.

### Which is updated more often, One By One or Puzzl3D?

One By One ships an update every 2 weeks, and Puzzl3D every 6 weeks. Most recently, One By One was updated on November 3, 2026 and Puzzl3D on October 30, 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.*