BA Plus Pro Calculator vs ColorMetric
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BA Plus Pro Calculator
This app emulates the TI BA II Plus financial calculator, offering familiar functions and algorithms. It's optimized for iPhone and iPad, preserving your work between sessions for seamless financial calculations and analysis.
- Time Value of Money calculations
- Cash flow analysis (NPV, IRR)
- Amortization schedules
- Full scientific calculations
- Chain or Algebraic calculation
- Statistical analysis
- Session state preservation
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BA Plus Pro Calculator is an emulator of the TI BA II Plus. It is built with the same layout, functions and algorithms of the original. If you are a student or a finance or real estate professional that is already familiar with the BA Plus you will feel at home with this calculator. The calculator has been optimized for viewing on iPhones and iPads. All time value of money variables are continuously displayed to give you confidence in your problem setups. The contents of the calculator and worksheets are preserved between computing sessions. If you are interrupted by a phone call or leave to work in another application, the next time you start BA Finance Plos it will be restored to the state you left off. •Time Value of Money calculations •Cash flow analysis with NPV and IRR •Amortization schedules • Cash flow analysis, Net Present Value (NPV), and Internal Rate of Return (IRR), Net Future Value (NFV), Payback (PB), Discounted Payback (DPB), Reinvestment Rate (RI), and Modified Internal Rate of Return (MOD). •full set of scientific calculations including logs and trig functions •Chain or Algebraic calculation • Statistical analysis. Bonus Features • Both iPhone and iPad versions included in one application
ColorMetric
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Water Testing, Perfected for Your Eyes and Your Environment. Are you tired of squinting at paper charts trying to decide if your Nitrate is 10 or 20? ColorMetric transforms your iPhone into a professional-grade colorimeter. Designed for both freshwater enthusiasts and reef-keepers, our app eliminates the subjectivity of traditional testing. What makes ColorMetric different? Intelligent Lighting Calibration: Room lighting often distorts colors. ColorMetric allows you to calibrate the app to your specific environment, ensuring your camera "sees" the same color every time, regardless of whether you’re under LEDs or sunlight. Individual Card Calibration: Every test kit brand has slight variations. You can calibrate the app to your specific test cards for unparalleled accuracy. Guided Test Assistant: Never botch a 5-minute wait again. The app walks you through every step of the testing process with integrated timers and clear instructions for every parameter. Dual Environment Support: Specialized profiles for Saltwater and Freshwater aquariums, covering everything from pH and Ammonia to high-sensitivity Reef parameters like Phosphate and Magnesium. A Healthier Tank Starts with Better Data Accuracy is the difference between a thriving ecosystem and a crash. ColorMetric bridges the gap between affordable liquid tests and expensive digital monitors, giving you the precision you need at a fraction of the cost. Download ColorMetric today and stop guessing. Privacy Policy URL: https://colormeter.web.app/privacy-policy.html Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is price: ColorMetric at Free against BA Plus Pro Calculator's $1.99. ColorMetric also leads on update cadence (weekly vs every 6 weeks). BA Plus Pro Calculator's advantage is in-app purchases (none vs 1) and device support (3 vs 1). On ads 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
ColorMetric is free to download; BA Plus Pro Calculator costs $1.99 up front. ColorMetric sells 1 in-app purchase, starting at $9.99 per year. BA Plus Pro Calculator asks for nothing beyond the download.
BA Plus Pro Calculator ships an update every 6 weeks, ColorMetric weekly. The most recent releases landed on September 24, 2026 and September 9, 2026 respectively.
| Parameter | BA Plus Pro Calculator | ColorMetric |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 3.7 (3 ratings) — better | — |
| Positive reviews | 62.5% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 6 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 12.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 4 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | 国栋 焦 | Lance Zukel |
In-app purchases
BA Plus Pro Calculator
No in-app purchases
ColorMetric
- ColorMetric Annual Ad Free$9.991 Year
Questions
Is BA Plus Pro Calculator free?
Is ColorMetric free?
Do BA Plus Pro Calculator or ColorMetric have ads?
Which is updated more often, BA Plus Pro Calculator or ColorMetric?
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