Comparison

Smart Adding Machine vs Typster

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

Head to head
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.

About

Typster

This keyboard app offers larger, well-spaced keys to reduce typos and improve typing speed. Its clean design and privacy-focused approach make typing on your phone more comfortable and accurate.

Highlights
  • Large, spacious keys
  • Improved typing accuracy
  • Clean and simple design
  • Privacy-focused (no full access)
  • Quick setup guide
Features
Read full description

Typster is a fast, private keyboard built for people with vision and touch impairment. Switch between 13 languages with a single tap — English, Norwegian, Swedish, Danish, Finnish, German, French, Spanish, Italian, Portuguese, Dutch, and Polish — each with its proper layout (QWERTY, AZERTY, QWERTZ and more). Suggestions that make sense. Typster ranks word suggestions by how common they actually are, so the word you want comes first — not an obscure one. Autocorrect that respects you. Clear typos get fixed automatically as you type. Changed something you meant to keep? One backspace undoes it. Prefer to turn it off entirely? One switch in the language menu. Built for real writing. Contractions and elisions like “it’s”, “c’est” and “d’accord” are handled naturally. Long-press any key for accented characters. Private by design. Suggestions and corrections run entirely on your device. Typster works without “Full Access” — your keystrokes never leave your iPhone. • 13 languages, instant switching • Frequency-ranked suggestions • Conservative autocorrect with undo • Optional alphabetical (ABC) layout • Long-press accents and symbols • iPhone and iPad, portrait and landscape

Screenshots

Smart Adding Machine4 screens
Typster4 screens

Verdict

The call

The clearest difference is update cadence: Smart Adding Machine at every 3 weeks against Typster's every 2 months. Smart Adding Machine also leads on device support (3 vs 1). Typster's advantage is price ($1.99 vs $3.99). On ads, in-app purchases and iOS requirement 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

Smart Adding Machine costs $3.99 and Typster $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Smart Adding Machine ships an update every 3 weeks, Typster every 2 months. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

Scorecard3 real differences · 7 level
Smart Adding Machine versus Typster: the parameters behind the verdict, then further details
ParameterSmart Adding MachineTypster
Price$3.99$1.99 — better
Rating—3.0 (2 ratings) — better
Positive reviews—25.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 3 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
Monetization—Paid
DevicesiPhone, iPad, Mac — betteriPhone
Requires iOS17.0 — better18.0
Further details — not scored
Size0 MB3 MB
Age rating4+4+
DeveloperHarry DetrickPAAL EIRIK PAULSEN

In-app purchases

None

Smart Adding Machine

No in-app purchases

None

Typster

No in-app purchases

Questions

Is Smart Adding Machine free?
Smart Adding Machine costs $3.99, with no in-app purchases.
Is Typster free?
Typster costs $1.99, with no in-app purchases.
Do Smart Adding Machine or Typster have ads?
Neither Smart Adding Machine nor Typster shows ads.
Which is updated more often, Smart Adding Machine or Typster?
Smart Adding Machine ships an update every 3 weeks, and Typster every 2 months. Most recently, Smart Adding Machine was updated on November 3, 2026 and Typster on November 5, 2026.

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