Comparison

Scientific Timer vs CalculatorX

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

Head to head
About

Scientific Timer

Features
Read full description

Scientific Timer helps researchers keep complex experiments on schedule. It breaks multi-step protocols into timer-tasks, so every incubation, wash and spin gets its own timer, in order, and you always know what comes next. Tired of juggling kitchen timers across the bench, or losing track of which tube went in the centrifuge when? Start from a curated protocol or build your own, then run as many timer-tasks in parallel as your experiments need. FEATURES PROTOCOLS AS TIMER-TASKS Each step of a protocol becomes a timer-task with its name, duration and position. Start, pause and reset each one on its own, and see its progress at a glance. CURATED PROTOCOLS, READY TO RUN 12 protocols with 211 timer-tasks, already set up: 10x Chromium Single Cell 3' Gene Expression v4 and 5' Gene Expression v3, 10x Xenium In Situ Gene Expression, ScaleBio Single Cell RNA Sequencing v1.1, Twist Library Preparation EF 2.0, Beckman Coulter SPRIselect left-side and double-sided size selection, Qiagen QIAamp DNA Micro, Qiagen RNeasy Midi/Maxi, NEB Ligation, immunofluorescence on frozen sections and trypsinization. Choose the ones you use when you first open the app, and change your selection later in Settings. YOUR OWN PROTOCOLS Create protocols and timer-tasks of your own, up to 24 hours each, as a countdown timer or a stopwatch. Put steps in the order you run them and mark your favorites. RUN MANY AT ONCE Run as many timer-tasks in parallel as you need, across several protocols. Timers keep counting while the app is closed, and a timer that passes its target keeps going, shown with a "+", so you know exactly how far over it is. QUIET NOTIFICATIONS A subtle notification on your iPhone tells you when a timer-task is done, instead of another alarm ringing across the lab. SEARCH Find a protocol by name in your library, or a timer-task by name within a protocol. BACK UP AND SHARE Export the protocols you created to a file, and import them again on another iPhone or share them with your lab. ACCESSIBLE TO EVERYONE Works with VoiceOver and Voice Control, adapts to the largest text sizes, supports Dark Mode, respects Reduce Motion, and does not rely on colour alone. PRIVATE BY DESIGN Scientific Timer collects no data. No account, no sign-in, no analytics, no tracking, no third-party SDKs. Your protocols and timers stay on your iPhone. LANGUAGES The app and its curated protocols in English, French, Spanish and Simplified Chinese. REQUIREMENTS iPhone with iOS 18 or later. Privacy Policy: https://elyzeo.com/apps/scientific-timer/privacy.html

About

CalculatorX

A fast and customizable calculator app that allows users to personalize themes, button styles, and view calculation history in real-time. Offers various display options and sound feedback for an enhanced user experience.

Highlights
  • Real-time calculation history
  • Customizable button colors and shapes
  • Multiple themes and light/dark modes
  • Decimal precision control
  • Exportable calculation history
  • Sound effects and voice feedback
Features
Read full description

Calculator X is a lightweight and fast calculator designed for efficient computing. Quickly change themes with simple swipe gestures, customize button colors, spacing, and shapes, and view your calculation history in real time. Features: Compact and fast – perform calculations instantly User-friendly gestures – swipe up or down to switch and customize calculator themes Customizable buttons – change button color, spacing, and shape Real-time calculation history – view your previous calculations instantly Export history – save and export your calculation history for easy reference Decimal precision control – choose the number of decimal places Thousands separator – view numbers clearly with thousands grouping Highlighted results – calculation results are displayed prominently Multiple themes – dozens of beautiful calculator themes to choose from Sound effects and voice feedback – support for button sounds and real voice responses Light and dark modes – switch easily to match your preference More features coming soon – we are constantly improving CalculatorX CalculatorX combines speed, customization, and fun to create the perfect calculation experience.

Screenshots

Scientific Timer4 screens
CalculatorX4 screens

Verdict

The call

The clearest difference is price: CalculatorX at Free against Scientific Timer's $0.99. CalculatorX also leads on update cadence (every 6 days vs every 16 months) and device support (3 vs 1). Scientific Timer's advantage is in-app purchases (none vs 1). On ads 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

CalculatorX is free to download; Scientific Timer costs $0.99 up front. CalculatorX sells 1 one-off in-app purchase. Scientific Timer asks for nothing beyond the download.

UpkeepUpdate frequency

Scientific Timer ships an update every 16 months, CalculatorX every 6 days. The most recent releases landed on October 2, 2026 and October 12, 2026 respectively.

Scorecard5 real differences · 5 level
Scientific Timer versus CalculatorX: the parameters behind the verdict, then further details
ParameterScientific TimerCalculatorX
Price$0.99Free — better
Rating—4.0 (2 ratings) — better
Positive reviews—92.9% of reviews
Number of ratings—2 — better
Update frequencyEvery 16 monthsEvery 6 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS18.015.0 — better
Further details — not scored
Size8 MB12 MB
Age rating4+12+
DeveloperStephane Boutet学良 靳

In-app purchases

None

Scientific Timer

No in-app purchases

1 purchases

CalculatorX

One-time1
  • Lifetime Premium$2.99

Questions

Is Scientific Timer free?
Scientific Timer costs $0.99, with no in-app purchases.
Is CalculatorX free?
CalculatorX is free to download, with in-app purchases available.
Do Scientific Timer or CalculatorX have ads?
Neither Scientific Timer nor CalculatorX shows ads.
Which is updated more often, Scientific Timer or CalculatorX?
Scientific Timer ships an update every 16 months, and CalculatorX every 6 days. Most recently, Scientific Timer was updated on October 2, 2026 and CalculatorX on October 12, 2026.

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