Comparison

Fast Convert Unit and Measure vs UnitDeck

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

Head to head
About

Fast Convert Unit and Measure

Easily convert between various units and metrics with a streamlined interface. Quickly access frequently used conversions through automatic shortcuts. Supports over 130 units across 20 categories, with options to customize decimals and reorganize metrics.

Highlights
  • Automatic shortcut creation for frequent units
  • Customizable number of decimals
  • Reorganize metric shortcuts
  • Over 130 units in 20 categories
  • Streamlined and simple interface
  • Fast conversion tables for cooking, shoes, and more
Features
Read full description

The simplest, most beautiful way possible to convert units and metric. Just select the unit you want to convert from and it will be automatically added to your shortcuts. You can then access to this unit directly. Usually, you end up converting the same unit over and over again. This app is fully focused on efficiency to help you have your conversion as fast as possible, for the optimum user experience ———————————————————— Fast tables for easy conversion for cooking, shoes size, oven, clothes and weather ———————————————————— If you don’t find your units, contact us and we will add it in the next release. This is the only unit converter you will ever need. ———————————————————— Simple and streamlined interface, very easy to use * For the best user experience, shortcut for unit are automatically added * You can reorganize your metrics shortcut * You can customize the number of decimals ———————————————————— Over 130 Units and 20 Categories. Focusing on the most common unit used. * acceleration * angle * apparentPower * area * charge * current * digital * energy * force * frequency * illuminance * length and distance * weight * power * pressure * speed * temperature * time * voltage * volume If your unit is missing contact us and we will add it. ———————————————————— Do not hesitate to contact us with the Contact button inside the app. We reply to all emails and take feedback into account :)

About

UnitDeck

Features
Read full description

UnitDeck is a fast unit converter and practical calculation toolbox built for real work. Choose your industry and UnitDeck places the conversions you use most on your Home screen. Convert common and specialist units, search by name or symbol, save favorites, keep conversion records, and add simple work notes without digging through long menus. BUILT AROUND YOUR WORK • Industry profiles for trade, logistics, construction, textiles, manufacturing, furniture, electrical work, HVAC, agriculture, energy, marine work, automotive work, and more • 121 conversion categories covering everyday and professional measurements • 25 practical trade calculators for common field and desk workflows • Search by unit name, symbol, or abbreviation • Favorites, recents, saved conversions, notes, configurable precision, and inch fractions FAST AND PRIVATE • Conversion inputs, saved records, and notes stay on your device • No account required • No advertising or cross-app tracking • Core conversion tools work offline UNITDECK PRO The free version includes a useful set of common conversions, tools recommended for your first industry, and limited previews of professional categories. UnitDeck Pro unlocks the complete professional toolbox with one lifetime purchase. It is not a subscription and does not auto-renew. Conversion results are provided for general information, estimation, and workflow assistance. Verify safety-critical, contractual, engineering, medical, financial, or regulated work against applicable standards and qualified professional guidance.

Screenshots

Fast Convert Unit and Measure4 screens
UnitDeck4 screens

Verdict

The call

The clearest difference is ads: UnitDeck at none against Fast Convert Unit and Measure's shown. Fast Convert Unit and Measure's advantage is iOS requirement (13.0 vs 17.0). On price, update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Fast Convert Unit and Measure sells 6 one-off in-app purchases and UnitDeck sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Fast Convert Unit and Measure ships an update weekly, UnitDeck every 2 weeks. The most recent releases landed on October 6, 2026 and October 25, 2026 respectively.

Scorecard2 real differences · 8 level
Fast Convert Unit and Measure versus UnitDeck: the parameters behind the verdict, then further details
ParameterFast Convert Unit and MeasureUnitDeck
PriceFreeFree
Rating4.4 (25 ratings) — better—
Positive reviews87.5% of reviews—
Number of ratings25 — better—
Update frequencyWeekly — betterEvery 2 weeks
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better17.0
Further details — not scored
Size176 MB3 MB
Age rating4+4+
DeveloperBruno Bongiovanni建辉 刘

In-app purchases

6 purchases

Fast Convert Unit and Measure

One-time6
  • Tip 10%2 variants$0.99
  • Tip 15%2 variants$1.99
  • Unlock app$1.99
Show 3 more
  • Tip 20%$2.99
  • Tip 20%$3.99
  • Tip 25%2 variants$4.99
1 purchases

UnitDeck

One-time1
  • UnitDeck Pro – Lifetime$3.99

Questions

Is Fast Convert Unit and Measure free?
Fast Convert Unit and Measure is free to download, with in-app purchases available.
Is UnitDeck free?
UnitDeck is free to download, with in-app purchases available.
Do Fast Convert Unit and Measure or UnitDeck have ads?
Fast Convert Unit and Measure shows ads; UnitDeck does not.
Which is updated more often, Fast Convert Unit and Measure or UnitDeck?
Fast Convert Unit and Measure ships an update weekly, and UnitDeck every 2 weeks. Most recently, Fast Convert Unit and Measure was updated on October 6, 2026 and UnitDeck on October 25, 2026.

Other comparisons