Comparison

TeSlate vs Calculator

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

Head to head
About

TeSlate

This app provides a home screen widget for iOS 17 that displays key information from your Tesla vehicle. It allows you to select which car to showcase directly on your device's display.

Highlights
  • iOS 17 home screen widget
  • Connects to Tesla vehicles
  • Displays vehicle information
  • Selectable car display
Features
Read full description

TeSlate is a beautiful widget crafted for iOS 17. TeSlate communicates with your Tesla vehicle and shows you useful information on your home screen. Choose which car is displayed in the app.

About

Calculator

This versatile tool combines a scientific calculator with currency and unit conversion capabilities. It offers a history manager, full editing options, and an intuitive interface for school, work, and daily tasks. Supports offline currency conversion.

Highlights
  • Scientific calculator functions
  • Currency converter with 37 currencies
  • Unit converter with 181 units
  • History manager for calculations
  • Offline currency conversion
  • Full editing options (undo/redo)
Features
Read full description

This multi-function app is a scientific calculator packaged with currency converter and unit converter. It is powerful and user-friendly for school, work and for everyday use. == Feature Highlights == • History Manager: review calculation/conversion history, reuse/share/insert/copy expression and result, and delete individual/all records. See below for details. • iPad Landscape Mode: display functions and numeric keys side by side for higher efficiency, or display history records and numeric keys side by side. See below for details. • Full editing options: Undo, Redo, Select, Select All, Cut, Copy, Paste, and Cancel • Full expression display in multiple lines: review and easily check entry errors • Caret support, easier to edit an entry • Instant detection and identification of invalid entries • Unique and playful button sound and haptic effects, both mutable (note: haptic effects are only available on iPhone 7 & plus and later iPhone models) • Aesthetic in user interface, easy and simple to use == Scientific Calculator == • +, −, ×, ÷, (), +/-, %, delete, clear-all • (Inverse) trigonometric functions: sin, cos, tan, asin, acos, atan (radian & degree) • (Inverse) hyperbolic functions: sinh, cosh, tanh, asinh, acosh, atanh • Constants: e, π • Scientific notation E: enter numbers in the format of scientific notation, such as, 1.8E6 or 2.21E-10 • Roots: square root, cubic root • Power & exponential functions: x^2, x^3, x^y, 2^x, 3^x, 10^x, e^x • Logarithmic functions: ln, log2, log10 • Absolute value: |x| == Currency Converter == • +, −, ×, ÷, (), +/-, %, delete, clear-all • Converts back-and-forth and does calculation as well • Supports daily updates for 37 major world currencies (AED, AUD, BGN, BRL, CAD, CHF, CNY, CZK, DKK, EUR, GBP, HKD, HUF, IDR, ILS, INR, ISK, JPY, KRW, MXN, MYR, NOK, NZD, PEN, PHP, PLN, RON, RUB, SAR, SEK, SGD, THB, TRY, TWD, USD, ZAR) • Supports offline conversion. When there is no internet connection, last downloaded rates are available for conversion. • Daily updates from three trusted sources: the U.S. Federal Reserve, European Central Bank, Bank of Canada == Unit Converter == • +, −, ×, ÷, (), +/-, %, delete, clear-all • Converts back-and-forth and does calculation as well • Supports 13 common categories: Area, Data, Energy, Force, Frequency, Length, Pressure, Speed, Temperature, Time, Volume, Weight, Others • 181 units of measurement, 3,207 conversions • Supports both British Imperial and U.S. Customary • Supports unit measurements in both Mainland China & Taiwan == In-app Purchases == We offer the following two in-app purchases to access additional features. Your purchase and generous support can greatly help us to continue developing this app. Thank you! >> History Manager - USD$0.99, limited free trial: • One time purchase is for both iPhone & iPad • Review calculation/conversion history • Copy or share expression and result • Reuse expression • Insert expression or result at the caret (cursor) with detection of error/invalid input • Delete individual or all records • History records are listed in alternate colors for easy browsing, each is marked with its date of creation. Long expressions are compressed or expanded automatically. • Calculator, Currency and Unit converters all support History >> iPad Landscape Mode - USD$0.99, limited free trial: • When using Calculator, iPad Landscape displays functions and numeric keys side by side, for higher efficiency. Calculation history and numeric keys may also be displayed side by side, allowing you to watch recordkeeping of calculation simultaneously. • When using Currency & Unit converters, iPad Landscape displays conversion history and numeric keys side by side, allowing you to watch recordkeeping of conversion simultaneously. == Support == • Website: https://www.theequally.com • Contact us: calculatorcu@theequally.com == Credits == UX designer: Cheryl S. Yee UI designer: Cheryl S. Yee

Screenshots

TeSlate4 screens
Calculator4 screens

Verdict

The call

The clearest difference is rating: Calculator at 5.0 against TeSlate's 4.1. Calculator also leads on review sentiment (100% vs 90%) and iOS requirement (12.0 vs 16.0). TeSlate's advantage is in-app purchases (none vs 2) and update cadence (weekly vs every 3 weeks). On price, ads 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. Calculator sells 2 one-off in-app purchases. TeSlate asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Calculator holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: TeSlate has 26 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 90% of TeSlate's written reviews are positive against 100% of Calculator's.

UpkeepUpdate frequency

TeSlate ships an update weekly, Calculator every 3 weeks. Both last shipped on November 3, 2026.

Scorecard7 real differences · 3 level
TeSlate versus Calculator: the parameters behind the verdict, then further details
ParameterTeSlateCalculator
PriceFreeFree
Rating4.1 (26 ratings)5.0 (4 ratings) — better
Positive reviews90.0% of reviews100.0% of reviews — better
Number of ratings26 — better4
Update frequencyWeekly — betterEvery 3 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.012.0 — better
Further details — not scored
Size7 MB19 MB
Age rating4+4+
DeveloperMichael Teuscherhua-shan cheng

Customer experience

TeSlate

All ratings25 ratings
Positive84.0%
Neutral4.0%
Negative12.0%
Written reviews20 reviews
Positive90.0%
Neutral5.0%
Negative5.0%

Calculator

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

TeSlate

No in-app purchases

2 purchases

Calculator

One-time2
  • Unlock iPad Landscape$0.99
  • Unlock History$0.99

Questions

Is TeSlate free?
TeSlate is free to download, with no in-app purchases.
Is Calculator free?
Calculator is free to download, with in-app purchases available.
Which has better reviews, TeSlate or Calculator?
Calculator is rated higher. TeSlate averages 4.1 out of 5 from 26 ratings, while Calculator averages 5.0 from 4 ratings.
Do TeSlate or Calculator have ads?
Neither TeSlate nor Calculator shows ads.
Which is updated more often, TeSlate or Calculator?
TeSlate ships an update weekly, and Calculator every 3 weeks. Most recently, TeSlate was updated on November 3, 2026 and Calculator on November 3, 2026.

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