Comparison

AddNotes vs SimpleSigma

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

Head to head
About

AddNotes

This app combines note-taking with automatic calculation. Input data and numbers, and it will instantly compute totals for you. It's versatile for managing various data items and calculations.

Highlights
  • Integrates notes and calculator
  • Automatic total calculation
  • Supports Dynamic Type
  • Compatible with hardware keyboards
  • Manages various data items
Features
Read full description

A useful app that integrates notes and calculator functionality. Input some data items and numbers, and the app will calculate totals for you automatically. This app can be used in many different ways, for calculating or managing various data items, and more. - This app supports Dynamic Type. - Compatible with hardware keyboards. Terms of Use https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

SimpleSigma

Features
Read full description

■ About SimpleSigma A simple and powerful calculator app for everyday use. From shopping calculations to business tallies, SimpleSigma handles it all. Choose from 3 table types to match your needs. ■ Key Features Simple Table - Extremely simple input - Auto-totaling as you type - Quick sum calculation - Perfect for receipt scanning (Pro - Beta) Duplex Table - Multiply two values automatically - Great for area or unit price calculations - Subtotal display Shopping Table - Price x Quantity = automatic calculation - Custom tax rates - Subtotals at a glance Common Features for All Tables - Swipe keyboard up/down/left/right to move between cells - CSV export - Auto-save ■ Pro Version Benefits Upgrade to SimpleSigma Pro for more power: No Ads Work distraction-free Unlimited Tables Create as many tables as you need (Free: 3 max) Advanced Statistics - Period-based totals (Today, Week, Month, Year) - Daily trend charts - Type breakdown pie charts - Total, Average, Max, Min at a glance - CSV export AppleWatch supported - Simple Table, Sharing with iPhone Receipt OCR (Beta) - Scan receipts with camera - Auto-recognize total amounts - Best suited for Simple Table - Save time on manual entry Starting at $2.99/month Save more with yearly plan! ■ Perfect For - Quick shopping calculations - Business expense tracking - Visualizing spending patterns - Managing multiple projects separately - Ad-free focus ■ Highlights - Extremely simple input design - Swipe keyboard (up/down/left/right) for fast cell navigation - Native iOS interface - Auto-save results - CSV export for data portability - Japanese & English support ■ Free Version Includes - All 3 table types - Up to 3 tables - Core calculation features - Keyboard swipe navigation - CSV export ■ Privacy - All data stored locally on device - No external server uploads - Secure iOS backup ■ Support Questions or feedback? Contact us: applicast3@gmail.com Make calculations smarter with SimpleSigma. Download now and try Pro for full features! Terms of Service: https://gist.github.com/zekoo2026/892cbcbb08ec7a1ce6e54e370acf2b51 Privacy Policy: https://gist.github.com/zekoo2026/12756689700e4afa4c9295cc4e0ba244

Screenshots

AddNotes3 screens
SimpleSigma4 screens

Verdict

The call

The clearest difference is update cadence: AddNotes at every 10 days against SimpleSigma's every 6 weeks. AddNotes also leads on iOS requirement (17.0 vs 26.0). On price, 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

Both are free to download. AddNotes sells 2 in-app purchases, starting at $2.99 per month and SimpleSigma sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

AddNotes ships an update every 10 days, SimpleSigma every 6 weeks. The most recent releases landed on September 1, 2026 and September 11, 2026 respectively.

Scorecard2 real differences · 8 level
AddNotes versus SimpleSigma: the parameters behind the verdict, then further details
ParameterAddNotesSimpleSigma
PriceFreeFree
Rating4.8 (365 ratings) — better—
Positive reviews87.1% of reviews—
Number of ratings365 — better—
Update frequencyEvery 10 days — betterEvery 6 weeks
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, Apple Watch
Requires iOS17.0 — better26.0
Further details — not scored
Size13 MB7 MB
Age rating4+4+
DeveloperClimb AppMUTSUAKI KIKUCHI

In-app purchases

2 purchases

AddNotes

Subscriptions2
  • Premium monthly$2.991 Month
  • Premium yearly$29.991 Year
2 purchases

SimpleSigma

Subscriptions2
  • SimpleSigma Pro (Monthly)$2.991 Month
  • SimpleSigma Pro (Yearly)$29.991 Year

Questions

Is AddNotes free?
AddNotes is free to download, with in-app purchases available.
Is SimpleSigma free?
SimpleSigma is free to download, with in-app purchases available.
Do AddNotes or SimpleSigma have ads?
Both AddNotes and SimpleSigma show ads.
Which is updated more often, AddNotes or SimpleSigma?
AddNotes ships an update every 10 days, and SimpleSigma every 6 weeks. Most recently, AddNotes was updated on September 1, 2026 and SimpleSigma on September 11, 2026.

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