# Power One vs Zen Screw

The clearest difference is price: Zen Screw at Free against Power One's $0.29. Zen Screw also leads on update cadence (fortnightly vs every 30 months) and ratings volume (3.2K vs 2). Power One's advantage is in-app purchases (none vs 23) and ads (none vs shown).

Zen Screw is free to download; Power One costs $0.29 up front. Zen Screw sells 23 one-off in-app purchases. Power One asks for nothing beyond the download.

Power One holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Zen Screw has 3.2K ratings behind it against 2, so its average is the more settled of the two.

Power One ships an update every 30 months, Zen Screw fortnightly. The most recent releases landed on October 7, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Power One | Zen Screw |
| --- | --- | --- |
| Price | $0.29 | **Free** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/power-one/id1556653574/reviews)** | [4.7 (3.2K ratings)](https://appshunter.io/ios/app/zen-screw/id6769321582/reviews) |
| Number of ratings | 2 | **3.2K** |
| Positive reviews | — | 27.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 30 months | **Fortnightly** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 5 MB | 663 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Yuri Goncharov](https://appshunter.io/developer/1556653576) | [Talefun](https://appshunter.io/developer/1440135076) |

## What reviewers say

### Power One

[App page](https://appshunter.io/ios/app/power-one/id1556653574)

This game challenges your mental agility and speed by presenting you with four-digit numbers. You must quickly add one to each digit and input the result before the one-minute timer runs out. Compete for high scores and compare your progress on the leaderboard.

**Highlights:** Develops motility and speed of thinking, Add one to each digit of a four-digit number, Score points for correct answers, Lose points for incorrect answers, One-minute countdown timer, Leaderboard for high scores, Invite friends functionality

**Features:** macOS Compatibility

**In-app purchases:** none


### Zen Screw

[App page](https://appshunter.io/ios/app/zen-screw/id6769321582)

Unwind with a satisfying 3D puzzle game that combines ASMR physics with color-sorting logic. Strategically remove and sort screws from intricate structures at your own pace, enjoying a calming sensory escape. This game offers a gentle brain workout with helpful boosters and a minimalist aesthetic.

**Highlights:** 3D spatial and color-sorting puzzles, Immersive ASMR relaxation with realistic sound effects, Intuitive gameplay with strategic depth, Zen Boosters for smooth progression, Minimalist UI and modern color palette, Offline play capability

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

**In-app purchases (23)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coin Pack 1 | $1.99 | one-time |
| Event 02 | $1.99 | one-time |
| Event 03 | $2.99 | one-time |
| Event 04 | $3.99 | one-time |
| Event 06 | $5.99 | one-time |
| Event 07 | $6.99 | one-time |
| Event 08 | $7.99 | one-time |
| Event 10 | $9.99 | one-time |
| Store Pack 1 | $9.99 | one-time |
| Event 11 | $10.99 | one-time |
| No Ads Pack | $10.99 | one-time |
| Coin Pack 3 | $14.99 | one-time |
| Store Pack 2 | $19.99 | one-time |
| Event 34 | $33.99 | one-time |
| Event 37 | $36.99 | one-time |
| Event 39 | $38.99 | one-time |
| Event 40 | $39.99 | one-time |
| Event 41 | $49.99 | one-time |
| Event 42 | $59.99 | one-time |
| Event 43 | $69.99 | one-time |
| Event 44 | $79.99 | one-time |
| Event 45 | $89.99 | one-time |
| Event 46 | $99.99 | one-time |


## Frequently asked questions

### Is Power One free?

Power One costs $0.29, with no in-app purchases.

### Is Zen Screw free?

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

### Which has better reviews, Power One or Zen Screw?

Power One is rated higher. Power One averages 5.0 out of 5 from 2 ratings, while Zen Screw averages 4.7 from 3.2K ratings.

### Do Power One or Zen Screw have ads?

Zen Screw shows ads; Power One does not.

### Which is updated more often, Power One or Zen Screw?

Power One ships an update every 30 months, and Zen Screw fortnightly. Most recently, Power One was updated on October 7, 2026 and Zen Screw on October 24, 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.*