# ∞ Sudoku ∞ vs Life on Io

The clearest difference is review sentiment: Life on Io at 100% against ∞ Sudoku ∞'s 0%. Life on Io also leads on ads (none vs shown) and price ($0.99 vs $4.99). ∞ Sudoku ∞'s advantage is rating (4.5 vs 3.0) and iOS requirement (16.6 vs 26.0). On ratings volume, in-app purchases and monetization model there is nothing between them.

∞ Sudoku ∞ costs $4.99 and Life on Io $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

∞ Sudoku ∞ holds the better App Store score, 4.5 against 3.0. Both are backed by a comparable volume of ratings — 2 and 2 respectively. Written reviews complicate that: 0% of ∞ Sudoku ∞'s written reviews are positive against 100% of Life on Io's, so the app with the better star average is not the one people write more warmly about.

∞ Sudoku ∞ ships an update every 11 months, Life on Io every 4 months. The most recent releases landed on November 1, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | ∞ Sudoku ∞ | Life on Io |
| --- | --- | --- |
| Price | $4.99 | **$0.99** |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/sudoku/id625720673/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/life-on-io/id6746771849/reviews) |
| Number of ratings | 2 | 2 |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 11 months | **Every 4 months** |
| Monetization | Paid | Paid |
| Size | 13 MB | 1.6 GB |
| Requires iOS | **16.6** | 26.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac, Apple TV, Vision Pro** |
| Age rating | 4+ | 4+ |
| Developer | [Oscar Tsang](https://appshunter.io/developer/416987065) | [Pieter Hartzenberg](https://appshunter.io/developer/495577297) |

## What reviewers say

### ∞ Sudoku ∞

[App page](https://appshunter.io/ios/app/sudoku/id625720673)

This application offers a dynamic Sudoku experience with an infinite number of puzzles. It features auto-save functionality and five distinct difficulty levels to challenge players of all skill sets. Enjoy endless Sudoku fun on your iOS devices.

**Highlights:** Dynamically generating puzzles, Auto save, Five difficulty levels, Infinite gameplay

**In-app purchases:** none


### Life on Io

[App page](https://appshunter.io/ios/app/life-on-io/id6746771849)

Explore AI-generated images and videos of newly discovered life forms on planet Io. Learn about species like Tardigrades and Ctenophora through an interactive visual experience. Features include slideshows and custom widgets.

**Highlights:** Discover known life forms on Io, View AI-generated photos and videos, Learn about specific species, Autoplay slideshow mode, Custom photo widgets

**In-app purchases:** none


## Frequently asked questions

### Is ∞ Sudoku ∞ free?

∞ Sudoku ∞ costs $4.99, with no in-app purchases.

### Is Life on Io free?

Life on Io costs $0.99, with no in-app purchases.

### Which has better reviews, ∞ Sudoku ∞ or Life on Io?

∞ Sudoku ∞ is rated higher. ∞ Sudoku ∞ averages 4.5 out of 5 from 2 ratings, while Life on Io averages 3.0 from 2 ratings.

### Do ∞ Sudoku ∞ or Life on Io have ads?

∞ Sudoku ∞ shows ads; Life on Io does not.

### Which is updated more often, ∞ Sudoku ∞ or Life on Io?

∞ Sudoku ∞ ships an update every 11 months, and Life on Io every 4 months. Most recently, ∞ Sudoku ∞ was updated on November 1, 2026 and Life on Io on November 5, 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.*