Comparison

Tip Calculator vs Smart Adding Machine

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

Head to head
About

Tip Calculator

Easily calculate the correct tip amount for your bills, even with complex taxes and multiple people splitting the cost. This tool simplifies tipping to ensure you always leave the right amount, saving you hassle and potential financial missteps.

Highlights
  • Calculate service-based tipping
  • Exclude sales taxes from tip calculation
  • Split bills up to 100 ways
  • Per-person billing and tipping
  • Currency switching
  • Simple tap and swipe interface
  • Social media sharing
Features
Read full description

Hmmm so I have a bill of $259.65 including tax, so how much should I tip? Tipping used to be simple. Now with a truck load of taxes, service charges, per person splitting and what not, a simple restaurant etiquette has turned into a full on battle of the brains. Luckily, there’s Tap Tip to save you the hassle of tipping wrong. And even calculating it. Within seconds you can get the perfect amount of tipping needed to keep that waiter smiling, your reputation intact and your finances up and running. Imagine tipping incorrectly at every meal every time you eat out. Sounds simple but the damage builds up over time to be something serious. An app like Tap Tip can help you loads. Oh, and it has lots of other nice features too! • You can calculate service based tipping • You can exclude sales taxes from tipping • Up to 100 person split of the bill ( VERY convenient) with per person billing and tipping • Switch the currency with ease! • Just a simple tap and swipe action to operate • Oh and if you want, you can even share it on social media like Facebook, twitter etc.

About

Smart Adding Machine

Read full description

This app has a numeric keyboard. It may not always be visible. If it is not visible, pressing the input button that has the text 'Insert an Amount or ...', will cause one to appear. If you want to hide it, select the button on the left titled 'Hide KB'. The Adding Machine contains a visual tape with two columns of numbers. The left is the amount you keyed. The right column has in a '1' which is the count. The system puts in a '1' for you. As you add items, the tape grows. The last item is always followed by an empty item colored red. This color red is important because it indicates where your next entry will be placed!!! After entering a number, press the 'Save' button. If this is your first entry, two items will appear on the tape. The first one will contain the number you keyed. The second will be red with the amount showing: 0.00 and a count showing 1. This pattern will continue as you add items On the left side of the screen are 11 buttons in a column. The first six are for moving the red color - but not its contents. This allows for the correction of errors. The first two are: first - go to tape start & second to tape end (red item). The second two go up one item and down one item on the tape. The last of the group switch between amount & count - usually used to change the count from 1. There a 4 named buttons the effect the tape: Clear, Insert (an empty row where the red is, Delete(the row that a red item) and Hide KB. The keyboard has no minus sign. There is a slider button that can be used to cause an number to be negative. It is red for emphasis At least 50 items can be entered. The tape can be scrolled by using your finger to see the entire tape. At the very top of the screen is a 'Help' chevron that switches to a page of help text.

Screenshots

Tip Calculator4 screens
Smart Adding Machine4 screens

Verdict

The call

The clearest difference is update cadence: Smart Adding Machine at every 3 weeks against Tip Calculator's every 6 months. Smart Adding Machine also leads on price ($3.99 vs $4.99). Tip Calculator's advantage is iOS requirement (12.0 vs 17.0). On ads, in-app purchases 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

Tip Calculator costs $4.99 and Smart Adding Machine $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Tip Calculator ships an update every 6 months, Smart Adding Machine every 3 weeks. The most recent releases landed on September 12, 2026 and September 9, 2026 respectively.

Scorecard3 real differences · 7 level
Tip Calculator versus Smart Adding Machine: the parameters behind the verdict, then further details
ParameterTip CalculatorSmart Adding Machine
Price$4.99$3.99 — better
Rating4.9 (27 ratings) — better—
Positive reviews75.0% of reviews—
Number of ratings27 — better—
Update frequencyEvery 6 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPod, Apple WatchiPhone, iPad, Mac
Requires iOS12.0 — better17.0
Further details — not scored
Size9 MB0 MB
Age rating4+4+
DeveloperTardent Apps Inc.Harry Detrick

In-app purchases

None

Tip Calculator

No in-app purchases

None

Smart Adding Machine

No in-app purchases

Questions

Is Tip Calculator free?
Tip Calculator costs $4.99, with no in-app purchases.
Is Smart Adding Machine free?
Smart Adding Machine costs $3.99, with no in-app purchases.
Do Tip Calculator or Smart Adding Machine have ads?
Neither Tip Calculator nor Smart Adding Machine shows ads.
Which is updated more often, Tip Calculator or Smart Adding Machine?
Tip Calculator ships an update every 6 months, and Smart Adding Machine every 3 weeks. Most recently, Tip Calculator was updated on September 12, 2026 and Smart Adding Machine on September 9, 2026.

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