Comparison

Numbla vs Simple Gradebook

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

Head to head
About

Numbla

A math-based game challenges players to identify multiples of a given number by selecting connected tiles. Progress through increasingly difficult levels with more tiles and complex numbers before the timer expires. Correctly identified tiles disappear, making way for new ones.

Highlights
  • Identify multiples of numbers
  • Select touching tiles
  • Timed gameplay
  • Increasing difficulty levels
  • New tiles fall after matches
Features
Read full description

Numbla is a Maths based game that tests your skills on identifying multiples of numbers. The objective of this game is to select a series of touching tiles that are multiples of the number that appears at the top of the screen before the timer runs out. Each time tiles are correctly identified they will disappear and new tiles will fall down. As you progress through the levels the numbers become a little more challenging and the number of tiles that appear on the screen increases.

About

Simple Gradebook

Features
Read full description

Simple Gradebook is a simple app to track and calculate your grades. Simply enter your Courses and Assessments, and Gradebook will calculate your current average in your Course and Term. Gradebook supports: โ€ข Assessments with individual weights e.g. "My Midterm exam is worth 10% of my final grade." โ€ข Assessments with multiple sub-assessments e.g. "There are 10 assignments. Combined they are worth 10% of my final grade." โ€ข Courses with a number of credit units โ€ข Pass/fail Courses I created Gradebook when I was in school to track my grades. Before that I was using a spreadsheet to do my calculations. I hope you enjoy using Gradebook. Please leave a review If you have suggestions for improvement! Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Numbla1 screens
Simple Gradebook4 screens

Verdict

The call

The clearest difference is in-app purchases: Numbla at none against Simple Gradebook's 1. Simple Gradebook's advantage is update cadence (every 4 days vs every 3 months) and iOS requirement (13.0 vs 18.6). On price, ads and device support there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Simple Gradebook sells 1 one-off in-app purchase. Numbla asks for nothing beyond the download.

UpkeepUpdate frequency

Numbla ships an update every 3 months, Simple Gradebook every 4 days. The most recent releases landed on October 24, 2026 and October 4, 2026 respectively.

Scorecard3 real differences ยท 5 level
Numbla versus Simple Gradebook: the parameters behind the verdict, then further details
ParameterNumblaSimple Gradebook
PriceFreeFree
Positive reviews100.0% of reviewsโ€”
Update frequencyEvery 3 monthsEvery 4 days โ€” better
AdsNoNo
In-app purchasesNo โ€” betterYes
MonetizationFreeโ€”
DevicesiPhone, iPadiPhone, iPad, iPod โ€” better
Requires iOS18.613.0 โ€” better
Further details โ€” not scored
Size16 MB25 MB
Age rating4+4+
DeveloperAlistair ShawJory Cooper

In-app purchases

None

Numbla

No in-app purchases

1 purchases

Simple Gradebook

One-time1
  • Gradebook Premium$12.99

Questions

Is Numbla free?
Numbla is free to download, with no in-app purchases.
Is Simple Gradebook free?
Simple Gradebook is free to download, with in-app purchases available.
Do Numbla or Simple Gradebook have ads?
Neither Numbla nor Simple Gradebook shows ads.
Which is updated more often, Numbla or Simple Gradebook?
Numbla ships an update every 3 months, and Simple Gradebook every 4 days. Most recently, Numbla was updated on October 24, 2026 and Simple Gradebook on October 4, 2026.

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