Uno Calculator vs Mettle Inspect
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Arithmetic calculations
- Unit conversions
- Size measurements
- Temperature conversions
- Speed calculations
- Energy calculations
- Currency exchange
Read full descriptionHide 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.
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.
- Project management
- Field inspections
- Picture documentation with annotations
- Offline workflows
- Team collaboration
- Secure data synchronization
Read full descriptionHide 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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
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.
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.
| Parameter | Uno Calculator | Mettle Inspect |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (116 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 73.2% of reviews | 100.0% of reviews — better |
| Number of ratings | 116 — better | 2 |
| Update frequency | Every 5 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad |
| Requires iOS | 14.2 — better | 16.4 |
| Further details — not scored | ||
| Size | 96 MB | 57 MB |
| Age rating | 4+ | 4+ |
| Developer | Uno Platform Inc. | KUVO LABS, LLC |
Customer experience
Uno Calculator
Mettle Inspect
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 moreShow fewer
- 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 moreShow fewer
- 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
Uno Calculator
No in-app purchases
Mettle Inspect
No in-app purchases
Questions
Is Uno Calculator free?
Is Mettle Inspect free?
Which has better reviews, Uno Calculator or Mettle Inspect?
Do Uno Calculator or Mettle Inspect have ads?
Which is updated more often, Uno Calculator or Mettle Inspect?
Other comparisons















