Comparison

SudokuVault vs AstroSpell

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

Head to head
About

SudokuVault

Features
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Put the noise aside. Give your mind a puzzle worth finishing. SudokuVault is a calm place to play Sudoku on your iPhone or iPad. There are no ads between moves, no account to create, and no subscription to keep track of. Just choose a challenge and settle into the grid. A LITTLE HELP, WHEN YOU WANT IT Use pencil notes to work through possibilities. Correct entries remove matching notes from their row, column and box. Ask for a hint when you need a nudge, or solve the whole puzzle yourself. A CHALLENGE YOU CAN TRUST Every newly generated puzzle is checked for a single solution. Choose Beginner, Intermediate or Expert and work at your own pace. Pause whenever you need to: your timer counts active play, and your game is saved so you can continue later. SEE YOUR PROGRESS Track completed games, best times, points and streaks. Earn achievements as your confidence grows. Your statistics and saved game stay on your device, with no account required. START FREE Play unlimited Beginner puzzles with notes, hints, statistics and achievements. You can also complete ten Intermediate or Expert games free; unfinished games do not use up the trial. ONE PAYMENT FOR EVERY LEVEL An optional lifetime PRO purchase unlocks unlimited Intermediate and Expert puzzles. No subscription, no recurring charge. Your local price is shown before purchase. If you bought the earlier full app, your full access is included: use Restore Purchases with the same Apple Account. No ads. No tracking. No personal data collection. Works offline.

About

AstroSpell

Features
Read full description

AstroSpell is a space-themed word mission game that turns spelling practice into a galaxy journey. Reveal astronomy words, manage oxygen, survive hazards, collect star coins, unlock achievements, and learn real space facts as you progress. The app includes campaign levels, a deterministic daily challenge, Spell-It recall mode, spoken word pronunciation, spaced-repetition review, accessibility-friendly typography, and a Mission Control learning hub. Version 1.3 adds Today's Flight Plan in Mission Control. The app reviews your local progress, missed words, review queue, and accuracy to recommend the best next session: Recovery Run, Spell-It, Campaign, or Daily Challenge. It also shows focus words, estimated practice time, and the category most worth reviewing. Core features include: - 200 astronomy word missions with original hints and facts. - Campaign, Daily Challenge, Spell-It, and Recovery Run modes. - Spoken pronunciation using on-device text-to-speech. - Spaced-repetition word review for missed words. - Mission Control learning hub with the new daily Flight Plan. - Difficulty profiles for different skill levels. - Achievements, star coins, upgrades, and galaxy map progression. - Safe offline play with local stats and progress. - Accessibility options including dyslexia-friendly typography. - Synthesized audio and haptics. AstroSpell does not require an account. Progress, settings, and word mastery stay on the device.

Screenshots

SudokuVault3 screens
AstroSpell4 screens

Verdict

The call

The clearest difference is price: SudokuVault at Free against AstroSpell's $0.99. SudokuVault also leads on iOS requirement (15.0 vs 17.0). AstroSpell's advantage is in-app purchases (none vs 1) and update cadence (every 6 days vs fortnightly). On ads and device support there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

SudokuVault is free to download; AstroSpell costs $0.99 up front. SudokuVault sells 1 one-off in-app purchase. AstroSpell asks for nothing beyond the download.

UpkeepUpdate frequency

SudokuVault ships an update fortnightly, AstroSpell every 6 days. The most recent releases landed on November 5, 2026 and November 10, 2026 respectively.

Scorecard4 real differences ยท 2 level
SudokuVault versus AstroSpell: the parameters behind the verdict, then further details
ParameterSudokuVaultAstroSpell
PriceFree โ€” better$0.99
Update frequencyFortnightlyEvery 6 days โ€” better
AdsNoNo
In-app purchasesYesNo โ€” better
DevicesiPhone, iPad, iPod โ€” betteriPhone, iPad
Requires iOS15.0 โ€” better17.0
Further details โ€” not scored
Size3 MB7 MB
Age rating4+4+
DeveloperSeishin Team SRLRobert Corbin

In-app purchases

1 purchases

SudokuVault

One-time1
  • SudokuVault PRO Lifetime$2.99
None

AstroSpell

No in-app purchases

Questions

Is SudokuVault free?
SudokuVault is free to download, with in-app purchases available.
Is AstroSpell free?
AstroSpell costs $0.99, with no in-app purchases.
Do SudokuVault or AstroSpell have ads?
Neither SudokuVault nor AstroSpell shows ads.
Which is updated more often, SudokuVault or AstroSpell?
SudokuVault ships an update fortnightly, and AstroSpell every 6 days. Most recently, SudokuVault was updated on November 5, 2026 and AstroSpell on November 10, 2026.

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