# Remember 3.1415 vs VariantDoku

The clearest difference is rating: VariantDoku at 4.9 against Remember 3.1415's 4.0. VariantDoku also leads on update cadence (weekly vs every 64 months). Remember 3.1415's advantage is review sentiment (100% vs 75%) and iOS requirement (13.0 vs 17.0). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Remember 3.1415 sells 1 one-off in-app purchase and VariantDoku sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

VariantDoku holds the better App Store score, 4.9 against 4.0. Both are backed by a comparable volume of ratings — 4 and 7 respectively. Written reviews complicate that: 100% of Remember 3.1415's written reviews are positive against 75% of VariantDoku's, so the app with the better star average is not the one people write more warmly about.

Remember 3.1415 ships an update every 64 months, VariantDoku weekly. Both last shipped on October 24, 2026.

## The numbers

| Metric | Remember 3.1415 | VariantDoku |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (4 ratings)](https://appshunter.io/ios/app/remember-31415/id985688958/reviews) | **[4.9 (7 ratings)](https://appshunter.io/ios/app/variantdoku-variant-sudoku/id6763799102/reviews)** |
| Number of ratings | 4 | **7** |
| Positive reviews | **100.0% of reviews** | 75.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 64 months | **Weekly** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 17 MB | 17 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [杨军 朱](https://appshunter.io/developer/564474259) | [Uladzislau Artsemyeu](https://appshunter.io/developer/1853525975) |

## What reviewers say

### Remember 3.1415

[App page](https://appshunter.io/ios/app/remember-31415/id985688958)

Challenge your math and logic skills with this game that tests your ability to recall digits of Pi. Compete against the clock in various timed modes or an endless challenge. AI provides helpful tips to improve your input speed and accuracy.

**Highlights:** Over 1 million digits of Pi, Multiple timed game modes, Endless challenge mode, AI-powered input tips, Game over on time or error

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy Pro Version | $0.99 | one-time |


### VariantDoku

[App page](https://appshunter.io/ios/app/variantdoku-variant-sudoku/id6763799102)

This app offers a vast library of over 1,800 logic puzzles, including various Sudoku variants. It features interactive tutorials for learning new puzzle types and tools to aid in solving without guesswork. Enjoy a calm, ad-free experience with progress tracking and customizable interface options.

**Highlights:** 1,800+ variant and zero-givens puzzles, Logic-checked puzzles with unique solutions, Daily puzzle with leaderboard, Interactive tutorials for all variants, Advanced solving tools (notes, colors, symbols), Progress tracking and streaks, Dark mode and calm interface

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Variant+ Monthly | $4.99 | per month |
| Variant+ Annual | $24.99 | per year |
| Variant+ Lifetime | $39.99 | one-time |


## Frequently asked questions

### Is Remember 3.1415 free?

Remember 3.1415 is free to download, with in-app purchases available.

### Is VariantDoku free?

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

### Which has better reviews, Remember 3.1415 or VariantDoku?

VariantDoku is rated higher. Remember 3.1415 averages 4.0 out of 5 from 4 ratings, while VariantDoku averages 4.9 from 7 ratings.

### Do Remember 3.1415 or VariantDoku have ads?

Neither Remember 3.1415 nor VariantDoku shows ads.

### Which is updated more often, Remember 3.1415 or VariantDoku?

Remember 3.1415 ships an update every 64 months, and VariantDoku weekly. Most recently, Remember 3.1415 was updated on October 24, 2026 and VariantDoku 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.*