# Power One vs Memory Challenge

The clearest difference is price: Memory Challenge at Free against Power One's $0.29. Memory Challenge also leads on update cadence (monthly vs every 30 months) and ratings volume (6 vs 2). Power One's advantage is ads (none vs shown). On rating, in-app purchases and device support there is nothing between them.

Memory Challenge is free to download; Power One costs $0.29 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Power One against 5.0 for Memory Challenge. Both are backed by a comparable volume of ratings — 2 and 6 respectively.

Power One ships an update every 30 months, Memory Challenge monthly. Both last shipped on November 3, 2026.

## The numbers

| Metric | Power One | Memory Challenge |
| --- | --- | --- |
| Price | $0.29 | **Free** |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/power-one/id1556653574/reviews) | [5.0 (6 ratings)](https://appshunter.io/ios/app/memory-challenge-from-1-to-50/id1615329392/reviews) |
| Number of ratings | 2 | **6** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 30 months | **Monthly** |
| Monetization | Paid | **Ad-supported** |
| Size | 5 MB | 150 MB |
| Requires iOS | 26.0 | **10.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Yuri Goncharov](https://appshunter.io/developer/1556653576) | [ASTER PLAY](https://appshunter.io/developer/1498296991) |

## 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


### Memory Challenge

[App page](https://appshunter.io/ios/app/memory-challenge-from-1-to-50/id1615329392)

This game challenges your attention, visual perception, and reaction speed. Tap numbers in ascending order on a 5x5 grid to test your memory and quickness. It's a fun daily brain exercise.

**Highlights:** Schulte Table game, Trains attention and visual perception, Improves memory and reaction speed, Daily brain exercise, Tap numbers 1 to 50 in order, 5x5 grid gameplay

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

**In-app purchases:** none


## Frequently asked questions

### Is Power One free?

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

### Is Memory Challenge free?

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

### Which has better reviews, Power One or Memory Challenge?

Power One and Memory Challenge are both rated 5.0 out of 5 on the App Store, from 2 and 6 ratings respectively.

### Do Power One or Memory Challenge have ads?

Memory Challenge shows ads; Power One does not.

### Which is updated more often, Power One or Memory Challenge?

Power One ships an update every 30 months, and Memory Challenge monthly. Most recently, Power One was updated on November 3, 2026 and Memory Challenge on November 3, 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.*