Comparison

Math Shelf vs Napa Valley USD

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

Head to head
About

Math Shelf

This app provides an experimentally proven program to enhance early mathematics achievement for preschool and kindergarten students. It offers on-level instruction through adaptive learning and placement tests, aligning with Common Core Standards.

Highlights
  • Experimentally proven to increase math achievement
  • Common Core Aligned content
  • Adaptive learning and placement tests
  • Cloud-based syncing for school and home
  • Free 7-day trial
  • Supports iPhone, iPad, and iPod
Read full description

Math Shelf is experimentally proven to increase preschool and Kindergarten students' mathematics achievement. **** Winner Re-Imagine Education Best Learning App **** From over 3,000 entries Math Shelf won the Silver Medal for best learning app. **** Common Core Aligned ***** Math Shelf's content exceeds the expectations in the Kindergarten Common Core Standards. **** On Level Instruction for Every Student **** Placement tests and adaptive learning provide on level learning for every student in your class. **** Cloud Based ***** Play Math Shelf on any iPad or iPhone. Students can play for free at home and data will sync to their school account. **** Experimentally Proven **** Read our 3 peer-reviewed published studies at www.mathshelf.com/research. ****Valhalla Foundation Funded**** Program Related Investment and grant recipient from the Valhalla Foundation to improve early math education. **** Heising-Simons Foundation Funded **** Grant recipient Heising-Simons Foundation to improve early mathematics education. **** Free Trial **** Try Math Shelf with your students for 7 days. **** Technology Requirements **** iPhone 6 and above. Plays on iOS 12.0 and above. You may purchase an auto-renewing subscription through an In-App Purchase. You can access all games and administrative features. Auto-renewable subscription -1 month ($4.99) period, for 2 students access. -1 year ($41.99) period, for 2 students access. Your subscription will be charged to your Apple account at confirmation of purchase and will automatically renew (at the duration selected) unless auto-renew is turned off at least 24 hours before the end of the current period. Current subscription may not be cancelled during the active subscription period; however, you can manage your subscription and/or turn off auto-renewal by visiting your Apple Account Settings after purchase. Privacy Policy: https://mathshelf.com/privacy Terms Of Use: https://mathshelf.com/terms

About

Napa Valley USD

This app connects schools and families, providing a central hub for all important communications. It ensures families receive timely updates, alerts, and messages from teachers and the district, fostering student success.

Highlights
  • School news and classroom updates
  • Important alerts and notices
  • Direct messaging with teachers
  • Group conversations
  • Volunteer and conference sign-ups
  • Absence and tardy responses
  • Fee and invoice payments
Features
Read full description

What is the Napa Valley USD app? The Napa Valley USD app helps schools and families stay connected and informed—all in one easy place. Whether it’s a quick message from a teacher, an important alert from the district, or a reminder about tomorrow’s field trip, the Napa Valley USD app makes sure families never miss a thing. Why families and teachers love the Napa Valley USD app: • Simple, easy-to-use app and website • Messages are automatically translated into 190+ languages • Best-in-class safety and security practices • One place for all school updates, alerts, and messages With the Napa Valley USD app, families and staff save time and stay connected—so everyone can focus on helping students succeed. Napa Valley USD for iOS The Napa Valley USD app makes it easy for families to stay in the loop and engage with their child’s school community. With the app, parents and guardians can: • See school news, classroom updates, and photos • Receive important notices like attendance alerts and cafeteria balances • Message teachers and staff directly • Join group conversations • Sign up for wishlist items, volunteering, and conferences • Respond to absences or tardies* • Pay school-related fees and invoices* * If included with your school's implementation

Screenshots

Math Shelf2 screens
Napa Valley USD4 screens

Verdict

The call

The clearest difference is in-app purchases: Napa Valley USD at none against Math Shelf's 10. Napa Valley USD also leads on update cadence (weekly vs every 4 months). Math Shelf's advantage is rating (4.7 vs 4.3) and iOS requirement (12.0 vs 17.0). On price, ratings volume, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Math Shelf sells 10 in-app purchases, starting at $4.99 per month. Napa Valley USD asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Math Shelf holds the better App Store score, 4.7 against 4.3. Both are backed by a comparable volume of ratings — 15 and 24 respectively.

UpkeepUpdate frequency

Math Shelf ships an update every 4 months, Napa Valley USD weekly. The most recent releases landed on November 1, 2026 and November 4, 2026 respectively.

Scorecard5 real differences · 5 level
Math Shelf versus Napa Valley USD: the parameters behind the verdict, then further details
ParameterMath ShelfNapa Valley USD
PriceFreeFree
Rating4.7 (15 ratings) — better4.3 (24 ratings)
Positive reviews80.0% of reviews—
Number of ratings1524 — better
Update frequencyEvery 4 monthsWeekly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better17.0
Further details — not scored
Size380 MB154 MB
Age rating4+4+
DeveloperJohn SchacterParentSquare

Customer experience

Math Shelf

All ratings13 ratings
Positive92.3%
Neutral0.0%
Negative7.7%
Written reviews5 reviews
Positive80.0%
Neutral0.0%
Negative20.0%

Napa Valley USD

All ratings24 ratings
Positive83.3%
Neutral4.2%
Negative12.5%

In-app purchases

10 purchases

Math Shelf

Subscriptions2
  • 1 Month Access7 Days trial$4.991 Month
  • 1 Year Access7 Days trial$41.991 Year
One-time8
  • 1 Students Monthly Subscription$1.99
  • 1 Student Monthly Subscription$2.99
  • 2 Students Monthly Subscription$3.99
Show 5 more
  • 3 Students Monthly Subscription$5.99
  • 2 Students Monthly Subscription$5.99
  • 3 Students Monthly Subscription$8.99
  • 3 Students Subscription$9.99
  • 4 Students Monthly Subscription$11.99
None

Napa Valley USD

No in-app purchases

Questions

Is Math Shelf free?
Math Shelf is free to download, with in-app purchases available.
Is Napa Valley USD free?
Napa Valley USD is free to download, with no in-app purchases.
Which has better reviews, Math Shelf or Napa Valley USD?
Math Shelf is rated higher. Math Shelf averages 4.7 out of 5 from 15 ratings, while Napa Valley USD averages 4.3 from 24 ratings.
Do Math Shelf or Napa Valley USD have ads?
Neither Math Shelf nor Napa Valley USD shows ads.
Which is updated more often, Math Shelf or Napa Valley USD?
Math Shelf ships an update every 4 months, and Napa Valley USD weekly. Most recently, Math Shelf was updated on November 1, 2026 and Napa Valley USD on November 4, 2026.

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