Comparison

Rec StopWatch vs ExSciCalc

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

Head to head
About

Rec StopWatch

This stopwatch app allows users to measure and record times with custom labels, perfect for athletic events or physical education. Easily sort and save past records, and share them via email. Features both digital and analog displays with simple two-button operation.

Highlights
  • Digital and analog display
  • Customizable labels for measured times
  • Sorting of time records
  • Save and email past records
  • Countdown start function
  • Animation and sound effects
Features
Read full description

"Rec StopWatch" is a stopwatch application can also manage measured records. Labels can be set to the measured time, for example, this application respond to measuring and recording student's 50m running. You don't need write measured records on paper.After measuring, the rest is just to send e-mail! Treated as direct data recording. Moreover, because all measured time can be sorted, you can checkwho the shortest recorded. This is a stopwatch application for athletics and physical education class and circuit racing. =====Performance features===== - Digital and analog display - Simple operation with two buttons - Comfortable operation with animation and sounds. - Countdown start function * countdown time can be changed - The measured time editing labels - Time list sorting function -order the old record -order the new record -order short time -order longest time -order short lap time -order longest lap time -Save and Display a list of past records. -Send e-mail a list of records. * You can also email a list of the records kept in the past =====Settings====== - The operation sounds ON/OFF - Countdown seconds(3, 5, 10 s)

About

ExSciCalc

This calculator offers enhanced precision and memory beyond standard devices. It includes advanced functions for statistics, physics, and mathematics, alongside common calculations and unit conversions.

Highlights
  • Extended precision (30+ digits)
  • Extended memory (main + 10 auxiliary)
  • Scroll windows for button access
  • Statistical calculations
  • Physical and mathematical constants
  • Unit conversions
  • Roots of equations
  • Special relativity calculations
Features
Read full description

"Extended" scientific calculator has more features than typical calculators, including: • Extended precision (30+ digits), twice that of typical calculators. • Extended memory including a main memory with statistical information, and 10 auxiliary memory values. • Extended space for buttons using scroll windows--no confusing modes and function keys. • Extended functions not found on most calculators including (but not limited to): ◇ Statistical information for calculating standard deviation (tied to the M+ key) ◇ Most common physical constants and mathematical constants ◇ Extensive unit conversion constants ◇ Roots of polynomials and some transcendental equations ◇ Special relativity calculations • And normal functions including: ◇ Normal and hyperbolic trigonometry ◇ Various logs, powers and roots ◇ % calculations including interest and amortization ◇ Temperature conversion ◇ Random numbers ◇ Averages and means

Screenshots

Rec StopWatch1 screens
ExSciCalc4 screens

Verdict

The call

The clearest difference is review sentiment: ExSciCalc at 100% against Rec StopWatch's 50%. ExSciCalc also leads on rating (5.0 vs 3.0) and update cadence (every 3 weeks vs every 39 months). Rec StopWatch's advantage is price ($0.99 vs $1.99) and iOS requirement (12.0 vs 14.0). On ratings volume, 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

Rec StopWatch costs $0.99 and ExSciCalc $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

ExSciCalc holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews point the same way: 50% of Rec StopWatch's written reviews are positive against 100% of ExSciCalc's.

UpkeepUpdate frequency

Rec StopWatch ships an update every 39 months, ExSciCalc every 3 weeks. The most recent releases landed on August 1, 2026 and June 5, 2026 respectively.

Scorecard5 real differences · 5 level
Rec StopWatch versus ExSciCalc: the parameters behind the verdict, then further details
ParameterRec StopWatchExSciCalc
Price$0.99 — better$1.99
Rating3.0 (2 ratings)5.0 (1 ratings) — better
Positive reviews50.0% of reviews100.0% of reviews — better
Number of ratings2 — better1
Update frequencyEvery 39 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPodiPhone, iPod
Requires iOS12.0 — better14.0
Further details — not scored
Size8 MB1 MB
Age rating4+4+
DeveloperYoshinosuke NagayaDale C Koepp

Customer experience

Rec StopWatch

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

ExSciCalc

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Rec StopWatch

No in-app purchases

None

ExSciCalc

No in-app purchases

Questions

Is Rec StopWatch free?
Rec StopWatch costs $0.99, with no in-app purchases.
Is ExSciCalc free?
ExSciCalc costs $1.99, with no in-app purchases.
Which has better reviews, Rec StopWatch or ExSciCalc?
ExSciCalc is rated higher. Rec StopWatch averages 3.0 out of 5 from 2 ratings, while ExSciCalc averages 5.0 from 1 ratings.
Do Rec StopWatch or ExSciCalc have ads?
Neither Rec StopWatch nor ExSciCalc shows ads.
Which is updated more often, Rec StopWatch or ExSciCalc?
Rec StopWatch ships an update every 39 months, and ExSciCalc every 3 weeks. Most recently, Rec StopWatch was updated on August 1, 2026 and ExSciCalc on June 5, 2026.

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