EyeOpen | Powertech vs Chemistry Equations
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
EyeOpen | Powertech
Remotely manage and monitor your garage door from anywhere using your smartphone. Receive instant notifications about its status and ensure your home is secure. Offers smart pairing and robust security features for peace of mind.
- Remote garage door opening and closing
- Real-time status notifications
- Smart device pairing
- Smartphone setup
- 6-digit PIN security
- 64-bit AES encryption
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Open up your life with an intelligent experience. From now on, you can manage and control your garage door with your iPhone at home or even miles away. You no longer have to worry about leaving your house without closing the garage door. With Eyeopen, you can check on the door’s status and close it right away. Eyeopen allows for better control over your home and gives you peace of mind. Eyeopen requires working with the Powertech garage door opener or a compatible garage door opener. Please email us at sales@powertech.tw for more purchase information. Features: - Open and close your garage door via home WiFi or Internet - Receive a mobile push notification when your garage door status changes - Smart pairing: Connect a new device to the garage door opener automatically - Simple setup: Program with your smartphone - Security protection: 6-digit PIN for user only and 64 bit AES encryption You can obtain an auto-renewing subscription through an In-App Purchase. • Auto-renewable subscription: IFTTT • Period: 1 year ($9.99 USD) • Upon confirming the purchase, your subscription will be billed to your iTunes account and will automatically renew (based on the chosen period) unless auto-renew is disabled at least 24 hours before the current period's conclusion. • Canceling the current subscription is not allowed during the active subscription period; however, you can manage your subscription and/or deactivate auto-renewal by navigating to your iTunes Account Settings after completing the purchase. • Privacy policy: https://powertech-automation.com/pages.php?pa=privacy • Member Terms of use: https://powertech-automation.com/pages.php?pa=eula
Chemistry Equations
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Chemy+ is an infinite canvas for understanding chemistry: type an equation and get the balanced right-hand side drawn atom by atom, build compounds by joining atoms with your finger, or drop elements into the Lab and watch what reacts. EQUATIONS • Type the reactants ("2H2 + O2 =") and Chemy+ completes and balances the equation. • Every product is drawn with its bonds and CPK colors; tap one for molar mass, bonds and composition. • Write both sides and the balancing happens on your device, offline. • Write the formula by hand with your finger or Apple Pencil: whatever is recognized goes into the same engine. BUILDER AND LAB • Drop one atom onto another and they bond by valence: covalent, polar, ionic or metallic. Valence electrons orbit the atom you touch. • Every body draws its real structure, with single, double and triple bonds, charges and ions. • Cut a bond with the scissors and see what it cost in energy and what is left: ions if it was polar, radicals if it was not. • Draw an organic skeleton as lines and drop it into the Lab fully built: each vertex is a carbon and hydrogens are filled in for you. • Place zones of heat, cold, pressure, catalyst, aqueous solution or current and change what forms and why. REAL CHEMISTRY • 118 elements with search, families, electronegativity, configuration and melting and boiling points. • 174 reactions verified against general and organic chemistry sources, each with its chapter. • Activity series, acid-base with live pH and indicators, states of matter, electrolysis and the Daniell cell. • Functional groups and IUPAC names for what you build. • "How to make it": Chemy+ traces the route from the elements in your palette and unfolds it on the canvas, step by step. MADE FOR LEARNING • 50 challenges across five levels, with no points and no leaderboards. • A history of everything you solved and built. • Spanish and English. • No accounts and no ads. Your canvases stay on your device. Product prediction for open equations uses artificial intelligence and is always verified against the on-device chemistry engine before being shown; only the equation text is sent. CHEMY+ PRO (OPTIONAL) • Free forever: equations, the Lab, the builder, the periodic table, challenges, molecules and organic chemistry, with up to 3 canvases and 10 AI predictions a day. Balancing an equation typed with both sides is unlimited. • Chemy+ Pro removes those caps: unlimited canvases and AI predictions with no daily limit. • Monthly or annual subscription; the annual plan includes a 7-day free trial. • Payment is charged to your Apple ID account. The subscription renews automatically unless you cancel it at least 24 hours before the end of the period in your Apple ID settings. • Your canvases are yours: if Pro ends, every one of them still opens and can be edited. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Chemistry Equations at none against EyeOpen | Powertech's 12. Chemistry Equations also leads on update cadence (weekly vs every 2 months). EyeOpen | Powertech's advantage is iOS requirement (15.0 vs 17.0). On price, ads 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. EyeOpen | Powertech sells 12 in-app purchases, starting at $0.99 per month. Chemistry Equations asks for nothing beyond the download.
EyeOpen | Powertech ships an update every 2 months, Chemistry Equations weekly. The most recent releases landed on October 23, 2026 and October 18, 2026 respectively.
| Parameter | EyeOpen | Powertech | Chemistry Equations |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (4 ratings) — better | — |
| Positive reviews | 13.4% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 2 months | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Subscription | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 181 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Powertech Automation Inc. | JIESUS RICARDO ROJAS MANJARREZ |
In-app purchases
EyeOpen | Powertech
- Widget$0.991 Month
- Notify Management$0.991 Month
- IFTTT$9.991 Year
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- Widget$9.991 Year
- Notify Management$9.991 Year
- Edit remote's button$29.99
- Remote backup & restore$29.99
- Unlock remote edit permissions$29.99
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- Classic Edition + 10 members$30.99
- 3 month record$54.99
- Deluxe Edition + 50 members$89.99
- Ultimate Edition + 90 members$139.99
Chemistry Equations
No in-app purchases
Questions
Is EyeOpen | Powertech free?
Is Chemistry Equations free?
Do EyeOpen | Powertech or Chemistry Equations have ads?
Which is updated more often, EyeOpen | Powertech or Chemistry Equations?
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