Comparison

Uno Calculator vs Mettle Inspect

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

Head to head
About

Uno Calculator

This app offers a comprehensive suite of calculation tools, handling everything from basic arithmetic to complex unit conversions. It supports measurements for size, temperature, speed, energy, and currency, making it a versatile solution for diverse needs.

Highlights
  • Arithmetic calculations
  • Unit conversions
  • Size measurements
  • Temperature conversions
  • Speed calculations
  • Energy calculations
  • Currency exchange
Read full description

The powerful Uno Calculator receives a makeover from Uno Platform with a wide variety of features. From calculations to measurements of size, temperature, speed, energy, currency and more, the calculator is a powerful one-stop-shop for all calculation-related needs.

About

Mettle Inspect

This platform enables inspection organizations and their teams to manage and capture on-site inspection information. It allows for project management, detailed field inspections, and secure data synchronization with an organization's workspace. Capture visual evidence, record observations, and collaborate with team members, even with limited connectivity.

Highlights
  • Project management
  • Field inspections
  • Picture documentation with annotations
  • Offline workflows
  • Team collaboration
  • Secure data synchronization
Read full description

Mettle Inspect is a field inspection platform for inspection organizations and their teams. This app is the field companion to the Mettle Inspect web platform, used by authorized team members to capture inspection information on site. Access requires an organization workspace. You can create a free account in this app to start a business workspace and begin an inspection, or sign in if your organization already invited you. Mettle Inspect is sold to organizations for authorized employees and contractors — not as a personal, individual, or family subscription. FEATURES • Project management Create and organize inspection projects with project details and inspection information. • Field inspections Create and complete inspections with organized observations and inspection details. • Picture documentation Capture inspection pictures, add annotations, and attach visual evidence directly to observations. • Offline workflows Continue working in areas with limited connectivity. Save inspection data offline and sync updates when back online. • Team collaboration Work with project teams using role-based access for owners, managers, and inspectors. • Inspection documentation Record observations, priorities, deadlines, recommendations, and inspection information in one place. • Secure synchronization Keep inspection data synchronized with your organization’s workspace. Mettle Inspect connects field capture, team review, and inspection reporting in one workflow, so organizations can document site conditions without duplicate data entry. New organizations can create a free account in this app. Billing and organization administration stay on the Mettle Inspect website. If your team already uses Mettle Inspect, sign in with the account your organization administrator provided, or accept their invite.

Screenshots

Uno Calculator3 screens
Mettle Inspect4 screens

Verdict

The call

The clearest difference is update cadence: Mettle Inspect at weekly against Uno Calculator's every 5 months. Mettle Inspect also leads on rating (5.0 vs 4.6) and review sentiment (100% vs 73%). Uno Calculator's advantage is ratings volume (116 vs 2) and device support (4 vs 2). On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Mettle Inspect holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Uno Calculator has 116 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 73% of Uno Calculator's written reviews are positive against 100% of Mettle Inspect's.

UpkeepUpdate frequency

Uno Calculator ships an update every 5 months, Mettle Inspect weekly. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.

Scorecard6 real differences · 4 level
Uno Calculator versus Mettle Inspect: the parameters behind the verdict, then further details
ParameterUno CalculatorMettle Inspect
PriceFreeFree
Rating4.6 (116 ratings)5.0 (2 ratings) — better
Positive reviews73.2% of reviews100.0% of reviews — better
Number of ratings116 — better2
Update frequencyEvery 5 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad
Requires iOS14.2 — better16.4
Further details — not scored
Size96 MB57 MB
Age rating4+4+
DeveloperUno Platform Inc.KUVO LABS, LLC

Customer experience

Uno Calculator

All ratings113 ratings
Positive89.4%
Neutral5.3%
Negative5.3%
Written reviews149 reviews
Positive73.2%
Neutral9.4%
Negative17.4%

Mettle Inspect

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Uno Calculator

Reported bugs

10 issues
  • Standard calculator mode doesn't follow order of operations (1+2*3 = 9 instead of 7)
  • Buttons disappear while using on iPad
  • Apple Pencil input causes buttons to blend into background
  • Slow key responsiveness on macOS
  • Numeric keypad input not recognized from Apple keyboard
Show 5 more
  • History not persisting after app closure
  • Text rendering issues on larger iPad displays
  • Unit conversion errors (volume translated incorrectly in Chinese)
  • Slow data entry on macOS Catalina
  • Landscape mode layout issues

Requested features

11 requests
  • Keyboard input support for Mac and iPad (most requested)
  • Copy and paste functionality for results and formulas
  • Option to reposition calculator buttons to right side
  • Ability to hide or collapse history pane
  • Persistent history that saves after app closes
Show 6 more
  • Sound/click feedback option in settings
  • Donation option within the app
  • Improved dark mode styling
  • Bluetooth keyboard support
  • Numeric keypad support for external keyboards
  • Currency conversion feature restoration

Mettle Inspect

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Uno Calculator

No in-app purchases

None

Mettle Inspect

No in-app purchases

Questions

Is Uno Calculator free?
Uno Calculator is free to download, with no in-app purchases.
Is Mettle Inspect free?
Mettle Inspect is free to download, with no in-app purchases.
Which has better reviews, Uno Calculator or Mettle Inspect?
Mettle Inspect is rated higher. Uno Calculator averages 4.6 out of 5 from 116 ratings, while Mettle Inspect averages 5.0 from 2 ratings.
Do Uno Calculator or Mettle Inspect have ads?
Neither Uno Calculator nor Mettle Inspect shows ads.
Which is updated more often, Uno Calculator or Mettle Inspect?
Uno Calculator ships an update every 5 months, and Mettle Inspect weekly. Most recently, Uno Calculator was updated on October 24, 2026 and Mettle Inspect on October 10, 2026.

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