Comparison

Natural Selection Sim vs Teach iLit 9

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

Head to head
About

Natural Selection Sim

This educational simulation models natural selection processes. It is designed for use with a specific science curriculum and requires a school-provided login and license to function.

Highlights
  • Natural selection simulation
  • Educational curriculum integration
  • Requires school login and license
  • iPad compatible
Read full description

A simulation of natural selection, for use with Amplify's science curriculum. **************************************************************** Natural Selection Sim WILL ONLY WORK IF YOU HAVE AN AMPLIFY LOGIN AND LICENSE PROVIDED BY A SCHOOL. You can download the app without a login, but you will not be able to use the app without a valid Amplify login. ****************************************************************"

About

Teach iLit 9

Features
Read full description

iLit is available for grades 6 through 12. Savvas Learning Company is a comprehensive literacy solution designed to produce two or more years of reading growth in a single year. The iLit student app contains everything a student needs to participate in an iLit class: interactive assignments, a digital notebook, and an e-library with over (2,500+) fiction and nonfiction titles. Recent additions include co-teacher functionality and student grouping throughout the app. iLit supports offline mode when the Internet isn’t available and a comprehensive automated rostering solution. The program was carefully crafted to meet the rigors of the Common Core State Standards as well as California, Florida, Texas, Nebraska, Ohio, Virginia, Pennsylvania, Georgia, and WIDA standards, and prepares students for success on the new Next Generation assessments. Individual, small group, and whole-class instruction is personalized based on a constant stream of data from a wide range of embedded assessments, including text-based performance tasks. iLit engages students like no other reading program through its vast library of high-interest nonfiction, instant support, engaging activities, and built-in reward systems that motivate students and track their progress. The iLit 20/45/90/ELL, Teacher and Student apps are all components of the iLit instructional product.

Verdict

The call

The clearest difference is iOS requirement: Natural Selection Sim at 10.0 against Teach iLit 9's 15.0. On price, update cadence, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Natural Selection Sim ships an update every 3 months, Teach iLit 9 every 4 months. The most recent releases landed on October 26, 2026 and October 29, 2026 respectively.

Scorecard1 real difference · 9 level
Natural Selection Sim versus Teach iLit 9: the parameters behind the verdict, then further details
ParameterNatural Selection SimTeach iLit 9
PriceFreeFree
Rating3.4 (22 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings22 — better—
Update frequencyEvery 3 months — betterEvery 4 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPadiPad
Requires iOS10.0 — better15.0
Further details — not scored
Size128 MB10 MB
Age rating4+4+
DeveloperAmplify Education, Inc.Savvas Learning Company LLC

In-app purchases

None

Natural Selection Sim

No in-app purchases

None

Teach iLit 9

No in-app purchases

Questions

Is Natural Selection Sim free?
Natural Selection Sim is free to download, with no in-app purchases.
Is Teach iLit 9 free?
Teach iLit 9 is free to download, with no in-app purchases.
Do Natural Selection Sim or Teach iLit 9 have ads?
Neither Natural Selection Sim nor Teach iLit 9 shows ads.
Which is updated more often, Natural Selection Sim or Teach iLit 9?
Natural Selection Sim ships an update every 3 months, and Teach iLit 9 every 4 months. Most recently, Natural Selection Sim was updated on October 26, 2026 and Teach iLit 9 on October 29, 2026.

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