Thesmos mark: an open hexagon ring with a bar passing through the gap on the right.

Focused software for iPhone, built to professional standards.

Thesmos LLC is an independent software company building reliable, privacy-conscious utilities for the Apple App Store. Our first app, PayoutRange, plans dividend income and shows the result as a range, not a single line.

Get notified at launch Try the simulator

PayoutRange is coming to the App Store.

Portfolio simulator

1,000 runs
Median end value
 
10th to 90th
 
Runs out of money
 

Inputs load with the simulator. This needs JavaScript.

1,000 runs, nothing saved. Planning estimate. Not advice.

Products

The product line

One app shipping first. One in development. Each does one job and keeps your data on your device.

PayoutRange app tile

PayoutRange

A dividend calculator, tracker and Monte Carlo income planner for iPhone. See what your portfolio pays this year, when it pays, and a range of where it could go over 10 to 40 years.

PayoutRange Portfolio screen: estimated dividends this year, yield on cost, monthly goal progress and a holdings list. PayoutRange Calendar screen: expected cash by month as a bar chart. PayoutRange Plan screen: a fan chart of portfolio value with low to high bands.
See PayoutRange

Home Vault

In development

An offline vault for home maintenance and appliance records.

PayoutRange

Free and Pro

Free

$0

  • The calculator, the Calendar and the Plan
  • Every figure before tax
  • Up to 15 holdings
  • 1 portfolio
  • 1 saved scenario
  • 1,000 simulated runs

Pro

$49.99 a year after a 7-day free trial, or $5.99 a month. Payments are handled by Apple.

  • Unlimited holdings
  • 10,000 simulated runs, and the income bands on the Plan
  • Five saved scenarios, and scenario compare
  • A second portfolio
  • Year-by-year table by age
  • What changes the answer most
  • After-tax figures everywhere: Portfolio, Calendar, Plan
  • The dividend cut model
  • Variable inflation, fat tails, guardrails, floor-and-ceiling
  • Restore from a backup file
  • PDF report, CSV export, and the transaction and dividends received imports
Compare in detail

Privacy

Your holdings stay on your iPhone.

0 accountsNo account and no sign-in. 0 trackers or adsNo analytics, no ads, no sale or sharing of data. Holdings stay putShare counts, values and costs never leave the device.

With Live prices on, PayoutRange sends ticker symbols and ticker search words, and nothing else, to a market data provider. Manual entry sends nothing. Read the privacy policy.

About

A small company with a narrow focus

Thesmos LLC is a United States software company. It builds focused utilities to professional standards: reliable in daily use, conservative with your data, and supported by the people who wrote them.

Every product is developed in-house and stays within the rules of the platforms it ships on.

Contact

Support and questions

thesmosllc@gmail.com

Support is handled directly by the developer. Expect a reply within two business days.