Numdactle vs AstroSpell
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Numdactle
This logic puzzle app challenges your mind with Numdactle grids. Fill in missing numbers so that each row, column, and diagonal sums to the same value, using unique numbers from a sequence. It's a fun way to boost cognitive skills and memory.
- Numdactle puzzle challenges
- Logical and strategic thinking
- Improves memory and cognitive abilities
- Offline play available
- Printable puzzles for sharing
- No ads, subscriptions, or in-app purchases
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The Numdactle app is designed to challenge your logical and strategic thinking with Numdactle puzzles. We provide a grid with a few numbers, and your task is to find the missing number we ask for. Here are the rules: The sum of the numbers in each row, column, and diagonal must be identical. Each number in the grid can only appear once, and while they may not be in sequential order, they are all part of a sequence. We believe Numdactle is an excellent workout for the brain and that it improves memory and cognitive abilities. Therefore, the Numdactle App not only provides entertainment, but it also contributes to mental fitness. You don't need online access to play the Numdactle app on your device, but you will need Internet access to retrieve your printable Numdactle puzzles that you can give out to friends, students, and so on. Unlike other puzzle or game apps out there, the Numdactle app does not have any advertising, subscription fees, in-app purchases, or tracking. In other words, you can play Numdactle every day with no surprises or extra costs. Are you up for the challenge? Download the Numdactle App today!
AstroSpell
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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
Verdict
The clearest difference is iOS requirement: Numdactle at 14.1 against AstroSpell's 17.0. On price, ads, in-app purchases and device support 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
Numdactle costs $0.99 and AstroSpell $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Numdactle | AstroSpell |
|---|---|---|
| Price | $0.99 | $0.99 |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | — | Every 6 days |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 14.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 1 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | H Valeur | Robert Corbin |
In-app purchases
Numdactle
No in-app purchases
AstroSpell
No in-app purchases









