Comparison

7 Planets vs Tertiary Sudoku

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

Head to head
About

7 Planets

This relaxing logic puzzle game features a wooden board and colorful marbles. Solve brain-teasing challenges by rolling and matching marbles to restore order. Enjoy offline play at your own pace with simple, satisfying gameplay.

Highlights
  • Wooden board and marble gameplay
  • Mind-bending logic challenges
  • Offline puzzle solving
  • Three distinct game modes
  • Leaderboards and achievements
  • Satisfying tactile experience
Features
Read full description

7 PLANETS is a relaxing yet challenging logic puzzle game with wooden balls, brain-teasing mechanics, and the timeless feel of a classic board game. Roll and match colourful marbles on a beautifully crafted wooden board, solve puzzles at your own pace, and train your brain with simple but deeply rewarding gameplay. A Puzzle with History 7 PLANETS has been on the App Store for over 15 years and is inspired by a beloved tabletop puzzle first introduced in 1985. It preserves the charm of the original game while bringing its clever logic challenges to modern mobile devices. You start with a wooden board containing 28 balls in 7 different colours. Your objective is simple: restore order by placing every ball into its correct row. The challenge is that when you move one ball, the entire row moves with it. Since the balls are shuffled differently every game, every puzzle presents a unique challenge. 5 Game Modes • One Planet – Match balls using only one randomly selected target colour. Fast, accessible, and perfect for short play sessions. • 7 Planets – The classic experience. Match all seven colours to their fixed positions on the board and improve your strategy over time. • Daily Planets – A new challenge every day. All players around the world receive exactly the same board and compete to achieve the best time and move count before a new puzzle arrives the next day. • Online Duel – Challenge friends or compete against players online in live head-to-head matches to prove who can solve the puzzle faster. • Black Planets – The ultimate challenge. Target colours are shuffled and a mysterious black planet blocks your path, creating entirely new strategic possibilities. This special mode appears only occasionally, making every appearance a unique event. Compete & Improve • Unlock 15 achievements • Climb 5 leaderboards • Improve your time and move count • Compare your skills with players around the world • Master increasingly difficult challenges Whether you are looking for a relaxing puzzle, a daily brain workout, or competitive challenges, 7 PLANETS offers a unique wooden puzzle experience that is easy to learn and rewarding to master. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula Privacy Policy: https://www.drugikat.com/new/?page_id=1772

About

Tertiary Sudoku

Features
Read full description

Tertiary Sudoku is a clean, offline number-puzzle game for players aged 14 and up. Every puzzle is generated on your device with a guaranteed unique solution, so you never run out and never see the same grid twice. Choose from four difficulty levels - Easy, Medium, Hard, and Expert - and solve at your own pace. - Four difficulty levels, from gentle warm-ups to ruthless Expert grids - Smart hints whenever you ask - reveal the right number for any cell - Pencil notes (candidates) with optional auto-cleanup - Conflict and same-number highlighting you can toggle on or off - Optional 3-strike challenge mode for mistake-free runs - A timer, scoring, and full game history kept entirely on your iPhone - Stats tab with your best times and scores per difficulty - Feedback and About tabs built right in - 100% offline and private - nothing ever leaves your device Track your best times and scores per difficulty, resume any game you leave, and train your brain one grid at a time.

Screenshots

7 Planets4 screens
Tertiary Sudoku3 screens

Verdict

The call

The clearest difference is in-app purchases: Tertiary Sudoku at none against 7 Planets's 2. Tertiary Sudoku also leads on update cadence (every 2 weeks vs every 4 months). 7 Planets's advantage is device support (3 vs 1). On price, ads and iOS requirement 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. 7 Planets sells 2 in-app purchases, starting at $1.99 per month. Tertiary Sudoku asks for nothing beyond the download.

UpkeepUpdate frequency

7 Planets ships an update every 4 months, Tertiary Sudoku every 2 weeks. The most recent releases landed on October 23, 2026 and October 15, 2026 respectively.

Scorecard3 real differences · 7 level
7 Planets versus Tertiary Sudoku: the parameters behind the verdict, then further details
Parameter7 PlanetsTertiary Sudoku
PriceFreeFree
Rating3.8 (16 ratings) — better—
Positive reviews38.7% of reviews—
Number of ratings16 — better—
Update frequencyEvery 4 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better16.0
Further details — not scored
Size107 MB1 MB
Age rating4+12+
DeveloperTomislav PuzakAlfred Ang

In-app purchases

2 purchases

7 Planets

Subscriptions2
  • 7 Planets Premium (Monthly)$1.991 Month
  • 7 Planets Premium (Yearly)$8.991 Year
None

Tertiary Sudoku

No in-app purchases

Questions

Is 7 Planets free?
7 Planets is free to download, with in-app purchases available.
Is Tertiary Sudoku free?
Tertiary Sudoku is free to download, with no in-app purchases.
Do 7 Planets or Tertiary Sudoku have ads?
Neither 7 Planets nor Tertiary Sudoku shows ads.
Which is updated more often, 7 Planets or Tertiary Sudoku?
7 Planets ships an update every 4 months, and Tertiary Sudoku every 2 weeks. Most recently, 7 Planets was updated on October 23, 2026 and Tertiary Sudoku on October 15, 2026.

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