Actioforma KOS vs KAGAKU
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Actioforma KOS
Explore biology and medical concepts with immersive 3D content, including electron microscopy and CT scans. View on your device or connect to a 3D TV for enhanced learning. Interactive features allow detailed examination of biological structures.
- 3D electron microscopic images
- Interactive 3D CT content
- Adjustable view angles, size, and transparency
- Stereoscopic viewing with/without glasses
- External display support for 3D TVs/projectors
- Content view history
- Display user's 3D content
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This revolutionary application was developed for medical educational purposes and offers users the opportunity to enjoy interesting 3D content for biology education. Users can view 3D images on an iPad or iPhone either with or without red/cyan glasses. An *adaptor allows connection to a 3D TV where vivid 3D content can be viewed. Content includes 3D electron microscopic images and 3D CT content as well as 3D movies. Some 3D CT content allows users to interactively adjust the viewable angle, size, and transparency and observe living organisms from the inside. Students can benefit from this content for self-study. **The application is also useful when used accompanying lectures and or presentations displayed on large 3D TVs and or 3D projectors. New biology, medical, and healthcare related 3D movies and 3D interactive content suitable for educators in related fields will be introduced in the near future. *3D content is viewable on 3D TVs using the Apple Digital AV adaptor compatible with your TV or with Apple TV. **For 3D display, units compatible with side-by-side input is required. Information pertaining to compatibility issues are available at support site. Application characteristics 1. Stereoscopic viewing 2. External Display support for some models 3. Content view history 4. Display user's 3D content 1. Stereoscopic viewing Content is viewable as follows: Anaglyph: Stereoscopic viewing with red/cyan glasses Glasses-free stereoscopic viewing: Glasses-free viewing of images placed side-by-side as one stereoscopic image. This method corresponds to cross-eyed view and parallel view methods. 3D TV: Used to display content on a 3D TV or a projector compatible with side-by-side format. 2. External Display support for some models Content display on an external monitor is supported for some models. When using an iPad or iPhone, you can display the content on a large TV screen and enjoy simultaneous viewing with others. (Use of a high-performance iPad or iPhone is recommended for this function.) 3. Content view history Content accessed is stored. This function facilitates searches for frequently viewed content and the alternate display of multiple content items. 4. Display user's 3D content Transferring photos by iTunes, display user's 3D content with Stereoscopic viewing. Not only on a iPad/iPhone but on a 3D TV or a projector.
KAGAKU
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KAGAKU is an interactive app for learning how atoms, molecules and reactions work through moving visuals. How electrons fill shells, how bonds form, why molecules have their shapes, what makes reactions fast: ideas that are hard to grasp from textbook pictures become clear when you change the conditions yourself. Developer: Fuji Bit Inc. 12 simulations in 3 categories: Atoms & elements: - Periodic Table: Compare all 118 elements colored by category, block (s, p, d, f) or electronegativity. Tap an element for its details. Pinch to zoom. - Atomic Structure: Raise the atomic number one step at a time and watch electrons fill the shells in a Bohr model, following real electron configurations (potassium is 2, 8, 8, 1). "Excite" lifts an electron, which gives off light as it falls back. - Flame Test: Compare the flame colors and emission spectra of lithium, sodium, potassium, calcium, strontium, barium and copper. The photon energy (E = hc/λ) of the main line is shown too. - Chemical Bonds: Pick two atoms and see ionic, covalent and metallic bonds form. The electronegativity difference gives the ionic character and polarity (δ+ / δ−); ionic bonds show formulas such as MgCl₂ and Al₂O₃. Molecules & matter: - Molecular Shapes: See the seven shapes set by electron-pair repulsion (VSEPR) in 3D: H₂O, NH₃, CH₄, CO₂, BF₃, PCl₅, SF₆ and more. Lone pairs and bond angles show why. Drag to rotate. - Organic Chemistry: Ethanol, acetaldehyde, acetic acid, acetone, methylamine, phenol and more, with the functional group (hydroxy, carboxy, ...) highlighted and its family and properties explained. - Gas Laws: Choose Boyle's, Charles's or Gay-Lussac's law; the quantity it keeps fixed is locked, and particles plus P–V, V–T or P–T graphs show the relationship. Values use real units: kPa, L and K. - Changes of State (new): Heat or cool 1 mol of water from ice to steam and watch the heating curve and the molecular arrangement side by side. See why the temperature stops at 0 °C and 100 °C (heats of fusion and vaporization). Reactions & change: - Balancing Equations: Change coefficients with + and − until the atoms match on both sides. Bars compare the atoms of each element, and the app tells you whether the ratio is the simplest. Seven reactions. - Titration & pH: Titrate hydrochloric acid (strong) or acetic acid (weak) with NaOH. See the titration curve, equivalence point and indicator ranges, and whether phenolphthalein, methyl orange or bromothymol blue suits the titration. - How Batteries Work: Choose two metals from Mg, Zn, Fe, Ni, Pb, Cu and Ag, change the ion concentrations and read the voltage. Potentials come from the Nernst equation, with the negative and positive electrodes and half-reactions shown. The same metal on both sides makes a concentration cell. - Reaction Rate (new): Watch reactions happen through particle collisions. Change temperature, concentration and catalyst and compare the share of collisions above the activation energy and the product graph. Features: - Dark and light themes - Home screen organized by category, plus an "All modes" list - Tips and a play button in the control panel - Results update in real time as you move sliders and choices - An info sheet with formulas and terms for every simulation - In landscape and on iPad, the canvas and controls sit side by side - Supports larger text sizes - VoiceOver reads out each screen's results (pH, voltage, element details, ...) - 73 languages including English and Japanese (follows the device language) - No sign-in; start right away Price and purchases: - Price: free - In-app purchases: none - Subscriptions: none - Ads: a Pangle banner ad at the bottom of the screen The "-raku" education series: - SUUGAKU: Mathematics - BUTURAKU: Mechanics - DENRAKU: Electromagnetism - HARAKU: Waves - KORAKU: Optics - RYORAKU: Quantum mechanics - KAGAKU: Chemistry
Screenshots
Verdict
The clearest difference is in-app purchases: KAGAKU at none against Actioforma KOS's 2. Actioforma KOS's advantage is ads (none vs shown) and iOS requirement (7.0 vs 15.0). On price, update cadence 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
Both are free to download. Actioforma KOS sells 2 one-off in-app purchases. KAGAKU asks for nothing beyond the download.
Actioforma KOS ships an update every 2 months, KAGAKU every 3 months. The most recent releases landed on November 1, 2026 and October 29, 2026 respectively.
| Parameter | Actioforma KOS | KAGAKU |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| Update frequency | Every 2 months — better | Every 3 months |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 7.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 18 MB | 29 MB |
| Age rating | 12+ | 4+ |
| Developer | META Corporation Japan Ltd. | Fuji Bit Inc. |
In-app purchases
Actioforma KOS
- SEM Section of the Rat Liver$0.99
- CT image of Japanese Rat Snake$0.99
KAGAKU
No in-app purchases









