Nest Number

The number you need to retire

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

Nest Number answers one question: how much do you actually need, today, to retire on your terms? Nest Number answers one question: how much do you actually need, today, to retire on your terms? Enter what you've saved, what you're adding each month, when you want to stop working, how much you'll need to spend, and how long your money needs to last. Nest Number runs the math — compound growth, inflation-adjusted spending, present value — and shows you exactly where you stand. No guesswork. No spreadsheets. No "rule of thumb" shortcuts that fall apart the moment your numbers don't match the assumptions baked into someone else's calculator. **What you get:** • A clear answer: the lump sum you'd need today to close any gap — or the extra monthly savings that gets you there instead • A year-by-year projection showing your balance building, then drawing down through retirement • Full control over every assumption: investment return, inflation, timeline, spending — change any input and watch your number update instantly • Nothing hidden: see exactly how the math works, not a black-box "score" Built for people who want a real answer, not a marketing pitch. No data leaves your device. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Ratings & Reviews

  • 5.0
    out of 5
    1 Ratings

changed the screen name from Runway to Nest Number added a button to share the link of the app changed the location of the lumps and dollars need to front added a tax calculation in retirement

Version 1.1

The developer, David Abrams, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    • David Abrams
    Size
    • 601.1 KB
    Category
    • Finance
    Compatibility
    Requires iOS 26.5 or later.
    • iPhone
      Requires iOS 26.5 or later.
    • iPad
      Requires iPadOS 26.5 or later.
    • Mac
      Requires macOS 26.5 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 26.5 or later.
    Languages
    • English
    Age Rating
    16+
    • 16+
    • Learn More
    • Contains
      Unrestricted Web Access
      User-Generated Content
    In-App Purchases
    Yes
    Copyright
    • © 2026 Intuitive Software
  • Privacy Policy

    • More by David Abrams