Comparison

Converter vs Bio

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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/

About

Bio

Features
Read full description

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

Converter3 screens
Bio4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

Scorecard4 real differences · 6 level
Converter versus Bio: the parameters behind the verdict, then further details
ParameterConverterBio
PriceFreeFree
Rating4.8 (4 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings4 — better—
Update frequencyWeekly—
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS16.612.0 — better
Further details — not scored
Size9 MB26 MB
Age rating4+4+
DeveloperALEKSEI SKVORTSOV, IEAarthi Padmanabhan

In-app purchases

6 purchases

Converter

Subscriptions5
  • Week$0.397 Days
  • Month$0.491 Month
  • Monthly$0.491 Month
Show 2 more
  • Annually$0.991 Year
  • Year$1.991 Year
One-time1
  • Forever$1.99
None

Bio

No in-app purchases

Questions

Is Converter free?
Converter is free to download, with in-app purchases available.
Is Bio free?
Bio is free to download, with no in-app purchases.
Do Converter or Bio have ads?
Converter shows ads; Bio does not.

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