Comparison

KnowDay vs MathMentor Pro

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

Head to head
About

KnowDay

Features
Read full description

Knowday turns curiosity into a daily habit. Pick a topic, discover a surprising fact, answer a quick question, and see instantly if you’re right. Build streaks, unlock titles, and save your favorite facts. No long reads. No boring lessons. Just one fun moment of discovery every day.

About

MathMentor Pro

Features
Read full description

Your Math Tutor at the Fingertip! MathMentor Pro turns any math worksheet into your personalized SAT and PSAT practice. Just snap a picture of a worksheet with your phone or device, and MathMentor Pro generates 10 new problems matched to what you are already working on, including five problems at the same difficulty and another five at a level harder to help your student excel at the target math concept and skill. A Digital Math Tutor Guides Your Growth Every problem includes a complete, step-by-step solution with clear mathematical notation. Designed for grades 6–12. Pre-algebra through precalculus, all SAT/PSAT domains covered with no manual setup required. Full solutions, not just answers. Each worked solution explains the reasoning behind every step, so you can learn why an answer is correct - really dive into the concept and skill to own it! Zero Sweat in Running & Save all Your Energy to Learning Export to PDF. Print a clean worksheet or answer key and share via AirDrop, Mail, or Files. Sign in with Apple keeps your account secure across devices. Subscriptions auto-renew and can be cancelled any time in your Apple ID settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

KnowDay3 screens
MathMentor Pro4 screens

Verdict

The call

The clearest difference is in-app purchases: KnowDay at none against MathMentor Pro's 2. KnowDay also leads on update cadence (every 5 weeks vs every 3 months) and iOS requirement (15.1 vs 26.0). On price, ads and device support there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. MathMentor Pro sells 2 in-app purchases, starting at $9.99 per month. KnowDay asks for nothing beyond the download.

UpkeepUpdate frequency

KnowDay ships an update every 5 weeks, MathMentor Pro every 3 months. The most recent releases landed on November 9, 2026 and October 31, 2026 respectively.

Scorecard3 real differences Β· 3 level
KnowDay versus MathMentor Pro: the parameters behind the verdict, then further details
ParameterKnowDayMathMentor Pro
PriceFreeFree
Update frequencyEvery 5 weeks β€” betterEvery 3 months
AdsNoNo
In-app purchasesNo β€” betterYes
DevicesiPhone, iPad, iPod β€” betteriPhone, iPad
Requires iOS15.1 β€” better26.0
Further details β€” not scored
Size67 MB18 MB
Age rating4+4+
DeveloperDaniel BrouwerSHIHYI HSUEH

In-app purchases

None

KnowDay

No in-app purchases

2 purchases

MathMentor Pro

Subscriptions2
  • MathMentor Pro$9.991 Month
  • MathMentor Pro$99.991 Year

Questions

Is KnowDay free?
KnowDay is free to download, with no in-app purchases.
Is MathMentor Pro free?
MathMentor Pro is free to download, with in-app purchases available.
Do KnowDay or MathMentor Pro have ads?
Neither KnowDay nor MathMentor Pro shows ads.
Which is updated more often, KnowDay or MathMentor Pro?
KnowDay ships an update every 5 weeks, and MathMentor Pro every 3 months. Most recently, KnowDay was updated on November 9, 2026 and MathMentor Pro on October 31, 2026.

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