Pre vs Knowledge Snack
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Pre
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Auto-renewable subscription Pre-Algebra Fundamentals comes with a 7-day free trial. After this you will be charged $4.99 a month and you can cancel anytime. Your subscription will be charged to your iTunes account at confirmation of purchase and will automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. You can manage your subscription by visiting your iTunes Account Settings. Privacy policy: https://www.mathgalaxy.com/FQ3_Menu/FQ3_PreAlgebra_Privacy.html Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Math Galaxy Pre-Algebra Fundamentals is like having an interactive textbook, with explanations, practice, games, and videos that cover all topics found in middle school math: decimals negative numbers (integers) absolute value exponents roots scientific and metric notation and operations order of operations factors and prime numbers 1 & 2-step equations systems of equations slopes and linear equations ratios & proportions similar figures direct & inverse variation percents geometry, including length, area, volume, weight, lines, angles & polygons pythagoras & right triangles basic trigonometry graphs frequency tables, mean (average) & median stem-and-leaf plots box-and-whisker plots probability patterns and sequences The concepts are presented in bite-size pieces and there is an unlimited number of practice problems, with numbers chosen randomly. By solving problems students earn robots to use in a maze game called the Labyrinth.
Knowledge Snack
Discover a new interesting fact daily in just two minutes. Enjoy audio narration for learning on the go and save your favorite facts for later reference. Customize notification frequency to suit your learning schedule.
- Daily new facts
- Audio narration
- Save favorite facts
- Customizable notifications
- Short learning sessions
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GET SMARTER IN 2 MINUTES Learn a new interesting fact every day. LISTEN ON THE GO Learn on the go with audio narration. SAVE YOUR FAVORITES Save your favorite knowledge snacks to reference them later. CHOOSE YOUR NOTIFICATION CADENCE Pick when you want to get notified: daily, weekly or never! Terms of Use: https://knowledgesnack.app/terms.html Privacy Policy: https://knowledgesnack.app/privacy.html
Screenshots
Verdict
The clearest difference is update cadence: Knowledge Snack at every 9 days against Pre's every 31 months. 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
Both are free to download. Pre sells 1 in-app purchase, starting at $4.99 per month and Knowledge Snack sells 1 in-app purchase, starting at $19.99 per year. Whichever you choose, the download price is not the number that matters.
Pre ships an update every 31 months, Knowledge Snack every 9 days. The most recent releases landed on November 8, 2026 and November 15, 2026 respectively.
| Parameter | Pre | Knowledge Snack |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Number of ratings | — | 2 — better |
| Update frequency | Every 31 months | Every 9 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Freemium |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 296 MB | 54 MB |
| Age rating | 4+ | 9+ |
| Developer | Math Galaxy | Giftphoria |
In-app purchases
Pre
- PreAlgebra - Math Galaxy7 Days trial$4.991 Month
Knowledge Snack
- Annual Premium3 Days trial$19.991 Year









