Comparison

Math Shelf vs Resfly

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

Resfly

This app streamlines medical residency programs by centralizing schedules, training records, and communication for residents, faculty, and coordinators. It offers a glance at daily tasks, manages rotations, and facilitates conference participation and document tracking.

Highlights
  • Daily schedule overview
  • Rotation and conference management
  • Training record logging
  • Program-wide communication
  • Document management
  • Configurable reminders
Features
Read full description

ResFly connects residents, faculty, coordinators, and program leaders with the schedules, training records, and communication tools they use every day. The iPhone app works alongside the ResFly desktop app and web workspace, bringing your program’s information together wherever you work. YOUR DAY AT A GLANCE See upcoming tasks, alerts, conferences, on-call assignments, clinic schedules, and coverage from your Home dashboard. Access your personal schedule and training activities without switching between separate tools. SCHEDULING AND PROGRAM MANAGEMENT Use the desktop and web workspace to organize rotations, conferences, clinics, shifts, on-call schedules, jeopardy, night coverage, holidays, and time off. Review assignments, manage requests and schedule changes, and keep your team informed. Program dashboards bring important activity, outstanding work, and scheduling information into view. EXTERNAL ROTATIONS AND CONNECTED PROGRAMS Coordinate external rotations and visiting learners, connect participating programs, and manage shared rotation information, contacts, and requirements. Keep communication and scheduling organized across training locations. CONFERENCES AND PARTICIPATION View upcoming sessions, sign up for available conferences, submit presentation topics, and follow approval updates. Access conference details and materials, check in to eligible sessions, and track participation. TRAINING RECORDS AND DOCUMENTS Log work hours and procedures, complete evaluations, and review training progress. Keep program documents and records organized, with reminders for document expirations and outstanding requirements where configured. REMINDERS AND FOLLOW-UP Stay informed with program alerts and configurable reminders for conferences, sign-ups, rotation requirements, evaluations, work hours, documents, and other assigned tasks. Email and in-app notifications help you follow up on upcoming activities, pending requests, and items that need attention. Reminder availability and delivery depend on your program’s settings and notification preferences. IMPORTS AND AI INTEGRATIONS Bring existing member, scheduling, and training information into supported workflows using data-import tools in the desktop and web workspace. Optional AI integrations support enabled workflows, including drafting and refining program content, helping teams work with their information more efficiently. STAY CONNECTED Use program messages, notifications, and contact information to stay in touch with your team and keep up with changes throughout the training year. ResFly requires an account with a participating program. Available features, integrations, reminders, and administrative tools vary by program configuration, permissions, and platform. Some program-management features are available through the desktop app or web workspace.

Screenshots

Math Shelf2 screens
Resfly4 screens

Verdict

The call

The clearest difference is in-app purchases: Resfly at none against Math Shelf's 10. Resfly also leads on update cadence (daily vs every 4 months) and rating (5.0 vs 4.7). Math Shelf's advantage is ratings volume (15 vs 2) and device support (3 vs 1). On price and ads 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. Resfly asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Resfly holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Math Shelf has 15 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

Math Shelf ships an update every 4 months, Resfly daily. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

Scorecard7 real differences · 3 level
Math Shelf versus Resfly: the parameters behind the verdict, then further details
ParameterMath ShelfResfly
PriceFreeFree
Rating4.7 (15 ratings)5.0 (2 ratings) — better
Positive reviews80.0% of reviews—
Number of ratings15 — better2
Update frequencyEvery 4 monthsDaily — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS12.0 — better17.0
Further details — not scored
Size380 MB42 MB
Age rating4+17+
DeveloperJohn SchacterFADEL HANOUN

Customer experience

Math Shelf

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

Resfly

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

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

Resfly

No in-app purchases

Questions

Is Math Shelf free?
Math Shelf is free to download, with in-app purchases available.
Is Resfly free?
Resfly is free to download, with no in-app purchases.
Which has better reviews, Math Shelf or Resfly?
Resfly is rated higher. Math Shelf averages 4.7 out of 5 from 15 ratings, while Resfly averages 5.0 from 2 ratings.
Do Math Shelf or Resfly have ads?
Neither Math Shelf nor Resfly shows ads.
Which is updated more often, Math Shelf or Resfly?
Math Shelf ships an update every 4 months, and Resfly daily. Most recently, Math Shelf was updated on November 1, 2026 and Resfly on November 6, 2026.

Other comparisons