Converter vs Bio
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Converter
Easily convert between US customary and metric units for weight, length, volume, and temperature. The app features a simple interface with no learning curve and automatically saves your conversion history for quick review.
- Weight conversion (Lb-Kg, Oz-G)
- Length conversion (Cm-Inch, Mi-Km)
- Volume conversion (Fl Oz-Ml, Cups-L)
- Temperature conversion (F-C)
- Automatic conversion history
- Zero learning curve interface
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Convert units fast across length, volume, weight, and temperature. Simple by default Enter a value and convert instantly in either direction. Custom converter Build your own converter by choosing any two units within the same category. Conversion history Your recent conversions are saved automatically and can be cleared anytime. Entity Explorer Compare values with real-world entities, save favorites to My entities, and add your own. Supported units • Length: Inch, Cm, Foot, Meter, Yard, Mile, Km • Volume: Fl Oz, Milliliter, Cup, Liter, Pint, Quart, Gallon • Weight: Ounce, Gram, Lb, Kg, Stone, Ton, M. Ton • Temperature: Celsius, Fahrenheit Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Bio
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Bio-Analytics is a research-based application developed at Michigan State University by Aarthi Padmanabhan under the Alocilja Nano-Biosensors Lab. Key Features: • Capture assay images directly from your iPhone camera. • Analyze sample intensity and compute color-based metrics (R, G, B ratios, transformed values, S/N). • View and compare experiment results interactively. • Export data as CSV files to share or store in your iPhone’s Files app. • Organize multiple experiments by date, lab, organism, and algorithm. Designed for researchers and lab professionals, Bio-Analytics bridges laboratory image capture with fast, offline data analysis — no internet connection required. Whether you’re conducting biosensor validation, colorimetric assays, or prototype testing, Bio-Analytics ensures consistent, reproducible, and secure results wherever you work.
Screenshots
Verdict
The clearest difference is in-app purchases: Bio at none against Converter's 6. Bio also leads on ads (none vs shown) and device support (3 vs 1). On price 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. Converter sells 6 in-app purchases, starting at $0.39 per 7 days. Bio asks for nothing beyond the download.
| Parameter | Converter | Bio |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (4 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Weekly | — |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 16.6 | 12.0 — better |
| Further details — not scored | ||
| Size | 9 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | ALEKSEI SKVORTSOV, IE | Aarthi Padmanabhan |
In-app purchases
Converter
- Week$0.397 Days
- Month$0.491 Month
- Monthly$0.491 Month
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- Annually$0.991 Year
- Year$1.991 Year
- Forever$1.99
Bio
No in-app purchases









