# Exatest Arithmetic Speed Drill vs Not Evil Sudoku

The clearest difference is in-app purchases: Exatest Arithmetic Speed Drill at none against Not Evil Sudoku's 1. Exatest Arithmetic Speed Drill also leads on rating (4.9 vs 4.6). Not Evil Sudoku's advantage is ratings volume (1.1K vs 7) and review sentiment (75% vs 50%). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Not Evil Sudoku sells 1 one-off in-app purchase. Exatest Arithmetic Speed Drill asks for nothing beyond the download.

Exatest Arithmetic Speed Drill holds the better App Store score, 4.9 against 4.6. That said, the two scores are not equally well evidenced: Not Evil Sudoku has 1.1K ratings behind it against 7, so its average is the more settled of the two. Written reviews complicate that: 50% of Exatest Arithmetic Speed Drill's written reviews are positive against 75% of Not Evil Sudoku's, so the app with the better star average is not the one people write more warmly about.

Exatest Arithmetic Speed Drill ships an update every 5 weeks, Not Evil Sudoku every 9 days. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Exatest Arithmetic Speed Drill | Not Evil Sudoku |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (7 ratings)](https://appshunter.io/ios/app/exatest-arithmetic-speed-drill/id1601075819/reviews)** | [4.6 (1.1K ratings)](https://appshunter.io/ios/app/not-evil-sudoku/id1614071642/reviews) |
| Number of ratings | 7 | **1.1K** |
| Positive reviews | 50.0% of reviews | **74.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 9 days** |
| Monetization | **Free** | Freemium |
| Size | 39 MB | 23 MB |
| Requires iOS | **14.1** | 15 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Steven Kideckel](https://appshunter.io/developer/1546724807) | [Ashish Selvaraj](https://appshunter.io/developer/1614070948) |

## What reviewers say

### Exatest Arithmetic Speed Drill

[App page](https://appshunter.io/ios/app/exatest-arithmetic-speed-drill/id1601075819)

Enhance your mental math skills with a daily speed drill. Solve as many arithmetic problems as possible within a 120-second timer. Track your progress with a score chart and challenge friends in a daily global competition.

**Highlights:** Timed mental arithmetic challenges, Daily speed drill mode, Score tracking and progression chart, Global daily challenge competition, Friend challenges, Practice for interviews

**Features:** macOS Compatibility

**In-app purchases:** none


### Not Evil Sudoku

[App page](https://appshunter.io/ios/app/not-evil-sudoku/id1614071642)

Enjoy a distraction-free Sudoku experience with helpful features like hints and real-time validation. Track your progress, compete globally, and customize the app with themes. Play daily puzzles for free or upgrade for unlimited games and advanced statistics.

**Highlights:** Fully offline play, No ads or distractions, Real-time move validation, Shake for hints, Daily puzzles with leaderboards, Customizable themes and icons, Notes and auto-clear notes

**Features:** Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $4.99 | one-time |

**What reviewers like**

- 🚀 Clean, minimalistic design
- 🔒 No ads or tracking
- 👍 Customizable features
- 👍 Good puzzle difficulty
- 👍 Helpful community

**What reviewers complain about**

- 🐛 Disappearing numbers glitch
- 🐛 App icon doesn't change for dark mode
- ⏱️ Limit of one game per day on free version
- 💰 Paid version considered expensive by some

**Reported bugs**

- Disappearing numbers when closing the app
- Numbers swapping to incorrect spots

**Requested features**

- Add auto-clear notes option without move validation
- Provide more theme color options
- Implement a 'warm' mode similar to other sudoku apps
- Add ability to remove notes after number is placed
- Highlight all instances of a number in the puzzle


## Frequently asked questions

### Is Exatest Arithmetic Speed Drill free?

Exatest Arithmetic Speed Drill is free to download, with no in-app purchases.

### Is Not Evil Sudoku free?

Not Evil Sudoku is free to download, with in-app purchases available.

### Which has better reviews, Exatest Arithmetic Speed Drill or Not Evil Sudoku?

Exatest Arithmetic Speed Drill is rated higher. Exatest Arithmetic Speed Drill averages 4.9 out of 5 from 7 ratings, while Not Evil Sudoku averages 4.6 from 1.1K ratings.

### Do Exatest Arithmetic Speed Drill or Not Evil Sudoku have ads?

Neither Exatest Arithmetic Speed Drill nor Not Evil Sudoku shows ads.

### Which is updated more often, Exatest Arithmetic Speed Drill or Not Evil Sudoku?

Exatest Arithmetic Speed Drill ships an update every 5 weeks, and Not Evil Sudoku every 9 days. Most recently, Exatest Arithmetic Speed Drill was updated on November 3, 2026 and Not Evil Sudoku on November 7, 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.*