# Nest Number — The number you need to retire > Retirement savings calculator for personalized financial planning. (iPhone/iPad app by David Abrams.) - Source: https://appshunter.io/ios/app/nest-number/id6802826365 (this page in markdown: same URL + `.md`) - Developer: [David Abrams](https://appshunter.io/developer/1346056543) - Category: Finance - Price: Free with in-app purchases (on sale, was $4.99) - Rating: 5.00/5 from 1 App Store ratings - Age rating: 17+ - Requires: iOS 26.5 · 1 MB - Languages: American English - Released: 2026-09-05 - Data updated: 2026-09-20 - Monetization: freemium - User reviews in markdown: https://appshunter.io/ios/app/nest-number/id6802826365/reviews.md ## What is Nest Number? 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/ ## Key features - Personalized retirement savings calculation - Year-by-year balance projections - Adjustable assumptions (returns, inflation, timeline) - Lump sum or monthly savings targets - Inflation-adjusted spending - Data stays on device ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Nest Egg number | $4.99 | per year | ## Frequently asked questions about Nest Number ### What is the Nest Number retirement calculator? Nest Number is a finance app designed to help you determine the exact amount of money you need to retire comfortably. It uses your personal savings, contribution, and spending details to provide a clear financial roadmap. ### How does Nest Number calculate retirement needs? Nest Number calculates your retirement needs by factoring in compound growth, inflation-adjusted spending, and the present value of your savings. You input your current savings, monthly additions, desired retirement age, spending, and how long you need the money to last. ### Can I customize the assumptions in Nest Number? Yes, Nest Number offers full control over all assumptions. You can adjust investment return rates, inflation, your retirement timeline, and spending habits to see how they impact your retirement number instantly. ### Does Nest Number have ads? No, Nest Number does not contain advertisements. The app is designed to provide a focused and uninterrupted user experience for financial planning. ### What are the subscription options for Nest Number? Nest Number offers a 'Nest Egg number' subscription for $4.99 per year, which includes a 14-day free trial. This subscription likely unlocks advanced features or removes limitations from the free version. ### Is my financial data safe with Nest Number? Yes, Nest Number prioritizes user privacy. The app states that no data leaves your device, ensuring your sensitive financial information remains secure and private. ### What devices does Nest Number support? Nest Number is available on iPhone and iPad devices. It is designed to be accessible on Apple's mobile and tablet platforms. ### How often is Nest Number updated? The latest version of Nest Number is 1.1, which was last updated on September 9, 2026. This indicates a recent update, suggesting ongoing development and maintenance. ## Version history (last 2 releases) ### 1.1 — 2026-09-09 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 ### 1.0 — 2026-09-05 No release notes. ## More apps by David Abrams - [Lineupper Basketball](https://appshunter.io/ios/app/lineupper-basketball/id1346056544) All apps by David Abrams: https://appshunter.io/developer/1346056543 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-20.*