Comparison

AddCalc Freedom vs OT

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

Head to head
About

AddCalc Freedom

This calculator app offers two modes: an adder calculator for accounting and an ordinary calculator. Customize its design, use sound effects, and manage input logs with editing and recalculation. It supports 14 significant digits and always displays Grand Total and Memory.

Highlights
  • Dual calculator modes (adder and ordinary)
  • Customizable calculator design
  • Input log with editing and recalculation
  • Voice reading of input log
  • 14 significant digits
  • Always display Grand Total and Memory
  • Backspace function
Features
Read full description

Do you know the calculator of optimal adder method for an accounting calculation? (with the calculation method change function) Try it on the iPhone and iPad you always carry around. 【Feature】 - This can switch an "adder calculator" and "ordinary calculator” - Simple setting of the design of the calculator - Sound effects - Input log and copy - Input log editing + recalculation function - Voice reading of the input log (for iOS7) - 14 Number of significant digits - Always display "Grand Total" - Always display "Memory" - BackSpace function Simple design that is emphasis in the adder calculation function 【How to use an adder calculator】 ”(10×10)+(5×5)-(6×5)=95” 10 [×] 10 [+=] 5 [×] 5 [+=] 6 [×] 5 [-] [GT] (10×10)Add(5×5)Add(6×5)Pull Ver5.5.3 later % Calculation example : 500 + (500 × 12%) = 560 500 [+=] 12 [%] [+=] (Old : 500 [+=] [×] 12 [%] [+=]) 【How to use an ordinary calculator】 ”(10×10)+(5×5)-(6×5)=95” 10 [×] 10 [=][M+] 5 [×] 5 [=][M+] 6 [×] 5 [=] [M-][MR] Added to the Grand Total by "=" The continuous input will be "10 × 10 + 5 × 5 - 6 × 5 = 2595" Ver5.5.3 later % Calculation example : 500 + (500 × 12%) = 560 500 [+] 12 [%] [=] (Old : 500 [+] [×] 12 [%] [=])

About

OT

This application streamlines employee attendance tracking through various check-in methods like WiFi, GPS, selfies, and QR codes. It aids organizations in making informed decisions with accurate data and simplifies overtime hour calculation and leave balance checks for employees.

Highlights
  • Multiple check-in methods (WiFi, GPS, selfie, QR)
  • Daily routing plan tracking
  • Overtime hour calculation
  • Overtime hour requests
  • Leave balance checks
Features
Read full description

OT-HR is developed for recording the employee’s attendance. OT-HR intends to help with the tracking of the daily routing plan of work. The employee can attend a WiFi, GPS, selfie, or QR check-in in OT-HR. The OT-HR attendance module helps organizations make strategic decisions based on accurately reported data. OT-HR is calculated for overtime hours by comparing the standard working hour and actual total working hours. Employees can easily request their overtime hours to overcome the conflict between HR and employees in OT-HR. Moreover, the employees can easily check their remaining leaves without conflict with HR.

Screenshots

AddCalc Freedom4 screens
OT4 screens

Verdict

The call

The clearest difference is rating: OT at 5.0 against AddCalc Freedom's 3.5. OT also leads on in-app purchases (none vs 1) and iOS requirement (12.0 vs 15.6). AddCalc Freedom's advantage is update cadence (every 6 weeks vs every 3 months) and ratings volume (4 vs 1). On price, ads, monetization model 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. AddCalc Freedom sells 1 one-off in-app purchase. OT asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

OT holds the better App Store score, 5.0 against 3.5. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

UpkeepUpdate frequency

AddCalc Freedom ships an update every 6 weeks, OT every 3 months. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

Scorecard5 real differences · 5 level
AddCalc Freedom versus OT: the parameters behind the verdict, then further details
ParameterAddCalc FreedomOT
PriceFreeFree
Rating3.5 (4 ratings)5.0 (1 ratings) — better
Positive reviews52.9% of reviews—
Number of ratings4 — better1
Update frequencyEvery 6 weeks — betterEvery 3 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.612.0 — better
Further details — not scored
Size6 MB49 MB
Age rating4+17+
DeveloperShinichi AokawaMyanmar Software Integrated Solutions Co., Ltd

Customer experience

AddCalc Freedom

All ratings4 ratings
Positive50.0%
Neutral25.0%
Negative25.0%
Written reviews17 reviews
Positive52.9%
Neutral5.9%
Negative41.2%

OT

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

AddCalc Freedom

One-time1
  • Remove ads$1.99
None

OT

No in-app purchases

Questions

Is AddCalc Freedom free?
AddCalc Freedom is free to download, with in-app purchases available.
Is OT free?
OT is free to download, with no in-app purchases.
Which has better reviews, AddCalc Freedom or OT?
OT is rated higher. AddCalc Freedom averages 3.5 out of 5 from 4 ratings, while OT averages 5.0 from 1 ratings.
Do AddCalc Freedom or OT have ads?
Neither AddCalc Freedom nor OT shows ads.
Which is updated more often, AddCalc Freedom or OT?
AddCalc Freedom ships an update every 6 weeks, and OT every 3 months. Most recently, AddCalc Freedom was updated on November 1, 2026 and OT on October 30, 2026.

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