QwikSpec vs SimTanka
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
QwikSpec
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QwikSpec is a cross-platform application that enables real estate developers and construction companies to streamline the construction process to save time and money by optimizing the use of resources, accelerating approvals and decisions. It includes a mobile app for Engineers on-site to automate workflow across Structural, Finishing, Snagging, Handover, and Interiors. Using the application provides customers with auto-generated project progress reports, observation summary reports, task reports, and real-time management dashboards. QwikSpec is the entry level version of the product. It's a simple and powerful tool with basic features and functionality that allows tracking of project progress, quality, and safety issues.
SimTanka
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With climate change bringing more extreme weather, planning for adequate clean water is more important than ever. SimTanka helps you estimate, collect, store, and monitor rainwater for household use. SimTanka downloads past daily rainfall records for your location so you can see seasonal variations and drought cycles. Use this data to set a realistic daily household water budget tailored to your needs. SimTank then suggests optimal rainwater tank sizes to meet your budget based on the historical rainfall. Large tanks can be expensive, but undersized tanks won't provide enough water. This feature takes the guesswork out of planning tank capacity. Worried about droughts and shortages? SimTanka looks ahead 30 days using forecast data to estimate your available rainwater. Youโll know in advance if rationing may be required. After installing your system, the app becomes your water diary. Log each rainfall event and the amount collected in your tank. Note any water quality issues like odor or debris that require treatment. Record maintenance like filter changes and roof washing. Knowing your water supply and demand helps preparation. Store extra in times of plenty, and conserve when lean times arrive. With climate uncertainty, a good rainwater harvesting plan brings resilience and peace of mind. This app provides the information you need to create a reliable, safe home rainwater system.
Screenshots
Verdict
The clearest difference is in-app purchases: QwikSpec at none against SimTanka's 3. QwikSpec also leads on device support (3 vs 1). On price, update cadence, ads and iOS requirement there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. SimTanka sells 3 one-off in-app purchases. QwikSpec asks for nothing beyond the download.
QwikSpec ships an update every 3 weeks, SimTanka every 2 weeks. The most recent releases landed on October 7, 2026 and October 2, 2026 respectively.
| Parameter | QwikSpec | SimTanka |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks | Every 2 weeks โ better |
| Ads | No | No |
| In-app purchases | No โ better | Yes |
| Devices | iPhone, iPad, iPod โ better | iPhone |
| Requires iOS | 15.6 โ better | 16.0 |
| Further details โ not scored | ||
| Size | 59 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Xlsys Technologies | Vikram Vyas |
In-app purchases
QwikSpec
No in-app purchases
SimTanka
- Support SimTanka$0.99
- Voluntary Contribution$9.99
- Voluntary Contribution$99.99









