Comparison

atom.sim vs iORA

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

Head to head

★ 5.012 ratingsView app →

About

atom.sim

Features

Read full description

A simulation of the anatomy of atoms. This app shows the first 18 atoms in 3d detail, provides info about the anatomy of these atoms and shows how empty an atom is. Ideal for students in mid school and high school.

About

iORA

Visualize chemical reactions in 3D using quantum-mechanical simulations. This free, interactive application makes complex chemistry concepts accessible and engaging for learners.

Highlights

3D chemical reaction visualization
Quantum-mechanical simulations
Interactive learning
Easy to use interface
Educational tool

Features

Read full description

iORA is a free, easy to use, highly interactive smartphone application that provides 3D visualization of chemical reactions based on quantum-mechanical simulations.

Screenshots

atom.sim2 screens

iORA4 screens

Verdict

The call

The clearest difference is update cadence: iORA at every 2 months against atom.sim's every 7 months. On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

atom.sim ships an update every 7 months, iORA every 2 months. The most recent releases landed on September 10, 2026 and September 7, 2026 respectively.

Scorecard1 real difference · 9 level

atom.sim versus iORA: the parameters behind the verdict, then further details
Parameter	atom.sim	iORA
Price	Free	Free
Rating	—	5.0 (12 ratings) — better
Positive reviews	—	100.0% of reviews
Number of ratings	—	12 — better
Update frequency	Every 7 months	Every 2 months — better
Ads	No	No
In-app purchases	No	No
Monetization	—	Free
Devices	iPhone, iPod	iPhone, iPad, iPod — better
Requires iOS	15.0	14.3 — better
Further details — not scored
Size	78 MB	40 MB
Age rating	4+	4+
Developer	Hans Kovi	Daniel Ess

Customer experience

atom.sim

All ratings1 ratings

Positive100.0%

Neutral0.0%

Negative0.0%

iORA

All ratings12 ratings

Positive100.0%

Neutral0.0%

Negative0.0%

Written reviews3 reviews

Positive100.0%

Neutral0.0%

Negative0.0%

In-app purchases

None

atom.sim

No in-app purchases

None

iORA

No in-app purchases

Questions

Is atom.sim free?

atom.sim is free to download, with no in-app purchases.

Is iORA free?

iORA is free to download, with no in-app purchases.

Do atom.sim or iORA have ads?

Neither atom.sim nor iORA shows ads.

Which is updated more often, atom.sim or iORA?

atom.sim ships an update every 7 months, and iORA every 2 months. Most recently, atom.sim was updated on September 10, 2026 and iORA on September 7, 2026.