Laboratory Timer vs Calculator Smart
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Laboratory Timer
Manage multiple countdown timers simultaneously for scientific experiments. This app features a user-friendly interface, the ability to save presets, and notifications when alarms sound. It also offers Apple Watch integration for real-time visualization and alerts.
- Run multiple timers concurrently
- Save preset timers with names
- Pause and resume timers
- Receive alarm notifications
- Apple Watch real-time visualization
- User-friendly interface
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Laboratory Timer is an easy-to-use countdown timer designed to run multiple alarm timers for laboratory at once. With Laboratory Timer’s gorgeous interface and user friendly navigation, it has never been easier to manage scientific experiments. You can also use your Apple Watch to visualize all your timers in real-time, and get notifications on your wrist. To use the Laboratory Timer app just pull down to add a new timer, set the duration and press “Play”. Key Features: • Add and run as many timers as you need • Save preset timers with name and duration • Pause and resume timers • Receive a notification when the alarms go off Learn more about shazino at www.shazino.com Follow us on Twitter @shazino
Calculator Smart
This app offers a powerful and precise calculator for everyday math and advanced scientific computations. It features a clean interface with large buttons, supporting complex equations, multiple modes, and intuitive input methods. Personalize your experience with colorful skins and custom icons.
- 30+ scientific operations
- Degrees and Radians support
- Parentheses and nested equations
- Intuitive input with slide-to-delete
- Copy & Paste results
- Apple Watch app and Lock Screen Widget
- Colorful skins and custom icons
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Calculator Smart is the most powerful and precise calculator for iPhone, iPad, and Apple Watch — built for everyday math and advanced scientific computations alike. Whether you need a quick percentage or a complex nested equation with parentheses, Calculator Smart handles it all with a clean, modern interface and lightning-fast big buttons. Scientific & Standard Modes • 30+ scientific operations including trigonometry, logarithms, and more • Degrees and Radians support • Parentheses and nested parentheses for complex equations • Output in Decimal or Scientific Notation (mantissa/exponent) Intuitive Input • Slide to delete wrong digits instantly • Double-tap or long-press to Copy & Paste results • Full External Keyboard support (Bluetooth & Smart Keyboard) • Three-digit grouping with locale-specific decimal and thousands separators Cross-Platform & Widgets • Apple Watch app with Complication shortcuts • Lock Screen Widget — calculate without unlocking your device • Messages Extension — share results directly in conversations • Multitasking: Slide Over and Split View (iPad) Personalization • Colorful skins to match your style • Custom App Icons that match your chosen skin • Button sound feedback for a satisfying tactile feel Universal Purchase — buy once, use on all your Apple devices. Download Calculator Smart for FREE today!
Screenshots
Verdict
Laboratory Timer and Calculator Smart both sit at 4.7 stars, but that hides the real split: 92% of Laboratory Timer's written reviews are positive against 36% of Calculator Smart's. Laboratory Timer also leads on in-app purchases (none vs 3) and ads (none vs shown). Calculator Smart's advantage is ratings volume (494 vs 47). On price, rating, update cadence 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
Both are free to download. Calculator Smart sells 3 one-off in-app purchases. Laboratory Timer asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.7 for Laboratory Timer against 4.7 for Calculator Smart. That said, the two scores are not equally well evidenced: Calculator Smart has 494 ratings behind it against 47, so its average is the more settled of the two. Written reviews are what separate them: 92% of Laboratory Timer's written reviews are positive against 36% of Calculator Smart's.
Laboratory Timer ships an update every 3 months, Calculator Smart every 4 months. The most recent releases landed on October 2, 2026 and October 11, 2026 respectively.
| Parameter | Laboratory Timer | Calculator Smart |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (47 ratings) | 4.7 (494 ratings) |
| Positive reviews | 91.7% of reviews — better | 36.4% of reviews |
| Number of ratings | 47 | 494 — better |
| Update frequency | Every 3 months — better | Every 4 months |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod, Apple TV, Apple Watch | iPhone, iPad, iPod, Mac, Apple TV, Apple Watch — better |
| Requires iOS | 8.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 7 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | shazino | Miroslav Otsedarski |
Customer experience
Laboratory Timer
Calculator Smart
In-app purchases
Laboratory Timer
No in-app purchases
Calculator Smart
- Colorful Skins and Remove Ads$1.99
- Colorful Skins$1.99
- Colorful Skins for Mac app$1.99
Questions
Is Laboratory Timer free?
Is Calculator Smart free?
Which has better reviews, Laboratory Timer or Calculator Smart?
Do Laboratory Timer or Calculator Smart have ads?
Which is updated more often, Laboratory Timer or Calculator Smart?
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