Chemical Solution Simple vs Rockwall ISD
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Chemical Solution Simple
This app assists in preparing chemical solutions through dissolution and dilution. It calculates moles, molar masses, required solute weights, and starting solution volumes, supporting various concentration units.
- Solution preparation by dissolution
- Solution preparation by dilution
- Mole calculation
- Molar mass analysis
- Required solute weight calculation
- Starting solution volume calculation
- Supports Molar, mM, uM, g/l, mg/l units
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Chemical Solution Simple helps in preparation of chemical solution by dissolution of solid solute or by dilution of existing solution and in finding of moles, Molar masses, required weights of solutes and volumes of starting solutions. Supported concentration units are Molar (M), mM, uM, g/l, mg/l. Touch the units field to change the units in the aformentioned order. The app includes Molar Mass Analyser. Tap on arrow in the Mw field initiates analysis of chemical formula in the component field and set the value to Mw field. No charge values should be used. Valid examples: Mg(HCO3)2, CaCl2.2H2O, CaCl2*2H2O, (NH4)2Fe(SO4)2.6H2O, Mg(H2PO4)2, C6H12O6. Analyser is case sensitive. Application assigns dot as a decimal separator. For further details please refer to http://www.volard.wordpress.com
Rockwall ISD
Stay informed about your school district with personalized news and updates. Access important information, receive notifications, and connect with school resources. This app offers a direct line to district happenings for students, parents, and the community.
- Personalized news feed
- District and school news
- District tip line access
- Customizable notifications
- District directory
- Contact information management
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The official Rockwall ISD app gives you a personalized window into what is happening at the district and schools. Get the news and information that you care about and get involved. Anyone can: -View District and school news -Use the district tip line -Receive notifications from the district and schools -Access the district directory -Display information personalized to your interests Parents and students can: -View and add contact information
Screenshots
Verdict
The clearest difference is price: Rockwall ISD at Free against Chemical Solution Simple's $2.99. Rockwall ISD also leads on ratings volume (10 vs 1) and iOS requirement (14.0 vs 17.0). Chemical Solution Simple's advantage is rating (5.0 vs 3.8) and review sentiment (100% vs 67%). On 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
Rockwall ISD is free to download; Chemical Solution Simple costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Chemical Solution Simple holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: Rockwall ISD has 10 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of Chemical Solution Simple's written reviews are positive against 67% of Rockwall ISD's.
Chemical Solution Simple ships an update every 3 months, Rockwall ISD every 14 months. Both last shipped on November 2, 2026.
| Parameter | Chemical Solution Simple | Rockwall ISD |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 5.0 (1 ratings) — better | 3.8 (10 ratings) |
| Positive reviews | 100.0% of reviews — better | 66.7% of reviews |
| Number of ratings | 1 | 10 — better |
| Update frequency | Every 3 months — better | Every 14 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 37 MB |
| Age rating | 4+ | 4+ |
| Developer | Roman Volinsky | ROCKWALL INDEPENDENT SCHOOL DISTRICT PUBLIC FACILITY CORPORATION |
Customer experience
Chemical Solution Simple
Rockwall ISD
In-app purchases
Chemical Solution Simple
No in-app purchases
Rockwall ISD
No in-app purchases
Questions
Is Chemical Solution Simple free?
Is Rockwall ISD free?
Which has better reviews, Chemical Solution Simple or Rockwall ISD?
Do Chemical Solution Simple or Rockwall ISD have ads?
Which is updated more often, Chemical Solution Simple or Rockwall ISD?
Other comparisons
