Comparison

Spam Text Blocker 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

Spam Text Blocker

This app filters out unwanted spam and scam texts, keeping your inbox clean and organized. It intelligently sorts messages into categories, ensuring you only see important communications. Advanced AI detects and blocks deceptive texts, protecting you from financial loss.

Highlights
  • Spam text blocking
  • Scam detection
  • Inbox organization
  • Transaction/Promotion sorting
  • AI-powered filtering
  • Privacy-focused
Read full description

Say goodbye to annoying spam texts, cluttered inboxes, and tricky scams. Keep your inbox for those texts you actually care about. TextShield shields your text message inbox with advanced filtering and intelligent sorting that keeps your inbox clean. NO MORE SPAM TEXTS Over 350 million spam texts are sent each day. Our advanced filtering system ensures that these unwanted messages won't reach your inbox. NO MORE INBOX CLUTTER Can't find your real messages between the reminders, codes, and updates? TextShield efficiently organizes your inbox so that important messages stand out. We support filtering into Transactions, Promotions folders, as well as any of 12 subfolders such as Reminders, Orders, Coupons, etc. NO MORE SCAMS Text scams steal about $10 billion each year. TextShield uses sophisticated scam detection algorithms to ensure that only real, meaningful texts get through. Our advanced AI analysis can identify 99.6% of deceptive texts and makes sure that they don't make their way into your inbox. PRIVACY-FIRST We don't show ads or do anything with your data that you wouldn't expect. We don't ask for any personal information, nor do we want it. TEXTSHIELD PRO Put spam blocking and text sorting on auto-pilot with our auto-updating smart rules and proactive threat detection. Available for $3.99 per month or $29.99 per year, both with a 7-day free trial. These subscriptions provide access to all TextShield features and services. Subscriptions automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. Payment will be charged to your App Store account at confirmation of purchase. You can manage your subscriptions and turn off auto-renewal by going to your Account Settings after purchase. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. TERMS OF SERVICE AND PRIVACY POLICY By using TextShield, you agree to our Terms of Service and Privacy Policy. Terms of Service: https://textshield.io/terms Privacy Policy: https://textshield.io/privacy SUPPORT & FEEDBACK If you ever need help, or have something you'd like us to add to TextShield, please send us an email at support@textshield.io. We offer dedicated support and respond personally to each and every email.

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

Spam Text Blocker4 screens
Smart Adding Machine4 screens

Verdict

The call

The clearest difference is price: Spam Text Blocker at Free against Smart Adding Machine's $3.99. Smart Adding Machine's advantage is in-app purchases (none vs 2). On update cadence, ads, device support 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

Spam Text Blocker is free to download; Smart Adding Machine costs $3.99 up front. Spam Text Blocker sells 2 in-app purchases, starting at $3.99 per month. Smart Adding Machine asks for nothing beyond the download.

UpkeepUpdate frequency

Spam Text Blocker ships an update every 6 weeks, Smart Adding Machine every 3 weeks. The most recent releases landed on October 11, 2026 and September 25, 2026 respectively.

Scorecard2 real differences · 8 level
Spam Text Blocker versus Smart Adding Machine: the parameters behind the verdict, then further details
ParameterSpam Text BlockerSmart Adding Machine
PriceFree — better$3.99
Rating4.4 (137 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings137 — better—
Update frequencyEvery 6 weeksEvery 3 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, Mac — better
Requires iOS16.0 — better17.0
Further details — not scored
Size21 MB0 MB
Age rating4+4+
DeveloperFathomTel, Inc.Harry Detrick

In-app purchases

2 purchases

Spam Text Blocker

Subscriptions2
  • TextShield Pro - Monthly7 Days trial$3.991 Month
  • TextShield Pro - Annual7 Days trial$29.991 Year
None

Smart Adding Machine

No in-app purchases

Questions

Is Spam Text Blocker free?
Spam Text Blocker is free to download, with in-app purchases available.
Is Smart Adding Machine free?
Smart Adding Machine costs $3.99, with no in-app purchases.
Do Spam Text Blocker or Smart Adding Machine have ads?
Neither Spam Text Blocker nor Smart Adding Machine shows ads.
Which is updated more often, Spam Text Blocker or Smart Adding Machine?
Spam Text Blocker ships an update every 6 weeks, and Smart Adding Machine every 3 weeks. Most recently, Spam Text Blocker was updated on October 11, 2026 and Smart Adding Machine on September 25, 2026.

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