Sudogu vs RainMaker 4
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
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.
- User loaded solution algorithms
- Immediate feedback on wrong guesses
- Four difficulty levels
- No time limits
- Save progress anytime
- Detailed game records
- Ad-free experience
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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!
RainMaker 4
Create personalized soundscapes with realistic rain and nature sounds for relaxation, focus, and meditation. Design your ideal weather experience anytime, anywhere.
- Realistic rain sounds
- Nature soundscapes
- Customizable sound mixing
- Relaxation aid
- Focus enhancement
- Meditation tool
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“Relax, focus, and meditate with realistic rain and nature sounds. Build your perfect storm anywhere, anytime!”
Screenshots
Verdict
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
Both are free to download. RainMaker 4 sells 7 one-off in-app purchases. Sudogu asks for nothing beyond the download.
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.
Sudogu ships an update fortnightly, RainMaker 4 every 8 days. The most recent releases landed on October 9, 2026 and September 29, 2026 respectively.
| Parameter | Sudogu | RainMaker 4 |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) | 5.0 (2 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 2 | 2 |
| Update frequency | Fortnightly | Every 8 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 18 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Neil Rohan | Trevor Phillips |
Customer experience
Sudogu
RainMaker 4
In-app purchases
Sudogu
No in-app purchases
RainMaker 4
- LightningStrikes$0.99
- rainforest$0.99
- rainOnMetal$0.99
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- thunderstorm$0.99
- rivers$0.99
- waterfalls$0.99
- continuousRainMode$4.99









