Comparison

A vs Euclid Lab

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

Head to head
About

A

Features
Read full description

This app uses numerous animations and test questions to explain high school level physics. It aims to give a sensory understanding of physics. It contains a lot of content, such as a list of formulas and explanations of the basics of mathematics. It consists of the following contents. 1. Topics --- The basic principles of physics are explained through animation. 2. Practical Explanation --- The behavior of cubes, springs, rigid bodies, etc. is displayed through animation. Detailed explanations, graphs, various values ​​such as velocity and displacement, and formulas are displayed. 3. Test --- Simple test questions are given. If you have difficulty doing the math in your head, you can use notes to calculate. 4. Formula display --- Formulas can be displayed in a list. Simple explanations are also provided. Please try. This app will show ads, but if you buy it for about $ 5, the ads will not show. The price fluctuates in accordance with the exchange rate. *Currently, only mechanics is supported, but we plan to add more fields in the future. We also plan to add and change animations and tests. If you have any comments or find any errors, please let us know in the rating section. ///////////////////////////////////////////////// Current main contents ・Mechanics --- Equation of motion, momentum, impulse, mechanical energy, work, dynamic friction, static friction, law of inertia, simple harmonic motion, simple pendulum, moment of force, center of gravity

About

Euclid Lab

Features
Read full description

Explore the 48 propositions of Book I of Euclid’s Elements through reading, construction and proof practice. Euclid Lab separates proposition reading, straightedge-and-compass work and reasoning so you can focus on one activity at a time. Arrange supplied proof blocks to connect premises to conclusions. Scored exercises use semantic checks of geometric relationships and logical dependencies, not the appearance of a drawing or AI grading. Progressive hints and complete solutions, shown on request, help when you get stuck. I.7 currently offers unscored reading, exploration and notes. Freehand notes are also unscored and are not automatically verified as correct proofs. Foundations and I.1–I.12 are free. I.13–I.24 and I.25–I.48 are separate, one-time in-app purchases. Buying one pack does not unlock the other. No subscription is required. Learning progress and notes are stored locally on your device. Learner profiles are not Apple Accounts, and no Euclid Lab account registration is required. Restore Purchases restores eligible content access; it does not synchronize learning progress.

Screenshots

A4 screens
Euclid Lab4 screens

Verdict

The call

The clearest difference is in-app purchases: Euclid Lab at none against A's 1. Euclid Lab also leads on update cadence (every 3 days vs every 2 weeks). On price, ads, device support and iOS requirement 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. A sells 1 one-off in-app purchase. Euclid Lab asks for nothing beyond the download.

UpkeepUpdate frequency

A ships an update every 2 weeks, Euclid Lab every 3 days. The most recent releases landed on October 18, 2026 and October 25, 2026 respectively.

Scorecard2 real differences · 4 level
A versus Euclid Lab: the parameters behind the verdict, then further details
ParameterAEuclid Lab
PriceFreeFree
Update frequencyEvery 2 weeksEvery 3 days — better
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhone, iPadiPhone, iPad, Mac — better
Requires iOS18.017.0 — better
Further details — not scored
Size271 MB14 MB
Age rating4+4+
DeveloperOgumo Co., Ltd.Yung-Hsin Shieh

In-app purchases

1 purchases

A

One-time1
  • Hide ads$5.99
None

Euclid Lab

No in-app purchases

Questions

Is A free?
A is free to download, with in-app purchases available.
Is Euclid Lab free?
Euclid Lab is free to download, with no in-app purchases.
Do A or Euclid Lab have ads?
Neither A nor Euclid Lab shows ads.
Which is updated more often, A or Euclid Lab?
A ships an update every 2 weeks, and Euclid Lab every 3 days. Most recently, A was updated on October 18, 2026 and Euclid Lab on October 25, 2026.

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