Comparison

Sudogu vs RainMaker 4

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Sudogu

This app offers a unique take on Sudoku with user-loaded solution algorithms and instant feedback on incorrect guesses. Enjoy multiple difficulty levels, no time limits, and save your progress anytime. It provides a relaxed, ad-free gaming experience for all ages.

Highlights
  • User loaded solution algorithms
  • Immediate feedback on wrong guesses
  • Four difficulty levels
  • No time limits
  • Save progress anytime
  • Detailed game records
  • Ad-free experience
Features
Read full description

Sudogu is an innovative twist on the classic Sudoku puzzle game, offering unique features that set it apart from the rest. Its standout feature is the User Loaded solution algorithms, which allow players to input puzzles from any source and either solve them or play them with helpful hints. Another distinguishing feature is the immediate feedback on wrong guesses—incorrect entries are flagged and disallowed, effectively eliminating the need for note-taking. Sudogu offers four levels of difficulty, each containing 100 puzzles: Simple Easy Intermediate Expert Enjoy a relaxed gaming experience with no time limits. You can save your progress at any point and resume later. Detailed records of all games played, including low scores, average times, and total cumulative game time, are saved and easily accessible. The app includes a full-color User Guide in PDF format, which can be printed, and a quick-reference Help file available during gameplay. Sudogu boasts an ad-free experience, requires no internet connection, offers mutable sound effects, and features a simple, clean interface. Sudogu: Fun for the whole family!

About

RainMaker 4

Create personalized soundscapes with realistic rain and nature sounds for relaxation, focus, and meditation. Design your ideal weather experience anytime, anywhere.

Highlights
  • Realistic rain sounds
  • Nature soundscapes
  • Customizable sound mixing
  • Relaxation aid
  • Focus enhancement
  • Meditation tool
Features
Read full description

“Relax, focus, and meditate with realistic rain and nature sounds. Build your perfect storm anywhere, anytime!”

Screenshots

Sudogu4 screens
RainMaker 43 screens

Verdict

The call

The clearest difference is in-app purchases: Sudogu at none against RainMaker 4's 7. Sudogu also leads on iOS requirement (16.0 vs 18.0). On price, rating, review sentiment and ratings volume there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. RainMaker 4 sells 7 one-off in-app purchases. Sudogu asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Sudogu against 5.0 for RainMaker 4. Both are backed by a comparable volume of ratings — 2 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Sudogu ships an update fortnightly, RainMaker 4 every 8 days. The most recent releases landed on October 9, 2026 and September 29, 2026 respectively.

Scorecard3 real differences · 7 level
Sudogu versus RainMaker 4: the parameters behind the verdict, then further details
ParameterSudoguRainMaker 4
PriceFreeFree
Rating5.0 (2 ratings)5.0 (2 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings22
Update frequencyFortnightlyEvery 8 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 — better18.0
Further details — not scored
Size18 MB7 MB
Age rating4+4+
DeveloperNeil RohanTrevor Phillips

Customer experience

Sudogu

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

RainMaker 4

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Sudogu

No in-app purchases

7 purchases

RainMaker 4

One-time7
  • LightningStrikes$0.99
  • rainforest$0.99
  • rainOnMetal$0.99
Show 4 more
  • thunderstorm$0.99
  • rivers$0.99
  • waterfalls$0.99
  • continuousRainMode$4.99

Questions

Is Sudogu free?
Sudogu is free to download, with no in-app purchases.
Is RainMaker 4 free?
RainMaker 4 is free to download, with in-app purchases available.
Which has better reviews, Sudogu or RainMaker 4?
Sudogu and RainMaker 4 are both rated 5.0 out of 5 on the App Store, from 2 and 2 ratings respectively.
Do Sudogu or RainMaker 4 have ads?
Neither Sudogu nor RainMaker 4 shows ads.
Which is updated more often, Sudogu or RainMaker 4?
Sudogu ships an update fortnightly, and RainMaker 4 every 8 days. Most recently, Sudogu was updated on October 9, 2026 and RainMaker 4 on September 29, 2026.

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